The compound ch3 - ch2 - sh is in the organic family known as

Answers

Answer 1
The name of these family is thiols
Answer 2
Final answer:

The compound CH3-CH2-SH belongs to the organic family known as Thiols. Thiols are structurally similar to alcohols but the oxygen atom in alcohols is replaced by sulfur in thiols. Both thiols and alcohols belong to a larger class called the Hydrocarbon Derivatives.

Explanation:

The compound you mentioned, CH3-CH2-SH, falls into the organic family categorized as 'Thiols'. Thiols are similar to alcohols in structure, but they have a sulfur atom rather than an oxygen atom. They are identified by the -SH or sulfhydryl functional group. Like the hydroxyl group in an alcohol, this sulfhydryl group gives a thiol its properties.

For example, the compound CH3-SH, also known as 'Methanethiol', is analogous to the alcohol methanol. Both thiols and alcohols are part of a larger class called the 'Hydrocarbon Derivatives'. As the name suggests, these are derived from hydrocarbons by replacing one or more hydrogen atoms with a functional group, which in this case is either a hydroxyl group (-OH) for alcohols or a sulfhydryl group (-SH) for thiols.

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Related Questions

fourth period metalliod a very semiconductor material

Answers

The metalloids, elementes with properties in between metals and no metals are: boron, B; silicon, Si; germanium, Ge; arsenic, As; antimonium, Sb; tellurium, Te; polonium, Po; and astatine, At.

Germaniun and arsenic belong the the fourth period.

Germanium is an important semiconductor, very used in transistors and integrated circuits, while arsenic has different uses (it is not a semiconductor).

Therefore, the answer is germanium.



One mole of calcium ions has the same number of representative particles as which of the following? one mole of calcium nuclei one mole of calcium atoms 6.02 x 1023 calcium ions All of these are correct.

Answers

One mole is always the same number: 6.02 * 10^ 23.

So, one mole of cars = 6.02 * 10 ^23 cars; one mole of pencils = 6.02 * 10^23 pencils; one mole of atoms = 6.02 * 10^23 atoms; one mole of molecules = 6.02 * 10^23 molecules.

So, all the options are correct: one mole of calcium ions has 6.02 * 10^23 representative particles, such as one mole of calcium nuclei and one of calcium atoms.

Consider the hypothetical atom x. if the molecular formula for lithium carbonate is li2co3 and the formula of x chloride is xcl3. what is the molecular formula for x carbonate?

Answers

First step is to determine the valency of each of x and CaCO3 from the given compounds:

1- As for Li2CO3: we can deduce that the valency of lithium is one while that of CO3 is two

2- As for XCl3: we can deduce that the valency of chlorine is one while that of X is three

Second step is to write the required compound: 
X : CO3  (elements involved)
3 : 2        (write the valency of each)
Then write the positive ion (X) followed by the valency of the negative ion (2) and then the negative ion (CO3) followed by the valency of the positive ion (3).
The final x carbonate is written as: X2(CO3)3
Final answer:

The atom 'x' has valency 3 based on xCl3 formula. The carbonate ion has a charge of -2. Hence, to balance the charges, the formula for 'x' carbonate should be X2(CO3)3.

Explanation:

The hypothetical atom is represented as 'x'. The formula provided, xCl3, indicates that there are three chloride ions for every atom of 'x'. This suggests that the valency of 'x' is 3. Assuming that 'x' is a metal, when it forms a carbonate, it will combine with the carbonate ion (CO3) which has a charge of -2.

As 'x' has a valency of 3 and carbonate has a charge of -2, to balance the charges the formula for 'x' carbonate would be X2(CO3)3. This formula implies there are two atoms of 'x' for every three carbonate ions in the compound. Therefore, the molecular formula for 'x' carbonate is X2(CO3)3.

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A piece of copper metal is dipped into an aqueous solution of agno3. which net ionic equation describes the reaction that occurs?

Answers

The complete equation would be

Cu + AgNO3 --> Cu(NO3)2 + Ag+

This is a single replacement reaction wherein Copper replaces the Silver atom. In the net ionic equation, you set the compounds into ionic forms and remove the spectator ions. These are the ions that appear in the left and right side of the equations. They are called spectator ions because they do not really play an active role in the equation.

Cu + Ag+ + NO3- --> Ag+ + Cu2+ + NO3-

The spectator ion is the nitrate ion (NO3-) and the silver ion (Ag+). Then, the balanced net ionic equation would be

Cu ----> Cu2+

Answer: The net chemical equation is written below.

Explanation:

When copper metal displaces an aqueous solution of silver nitrate, it leads to the formation of silver metal and aqueous copper nitrate solution.

This reaction is an example of single displacement reaction.

Net ionic equation of any reaction does not include any spectator ions.

Spectator ions are defined as the ions which does not get involved in a chemical equation. They are found on both the sides of the chemical reaction when it is present in ionic form.

The chemical equation for the reaction of copper metal and silver nitrate is given as:

[tex]Cu(s)+2AgNO_3(aq.)\rightarrow Cu(NO_3)_2(aq.)+2Ag(s)[/tex]

Ionic form of the above equation follows

[tex]Cu(s)+2Ag^+(aq.)+2NO_3^-(aq.)\rightarrow Cu^{2+}(aq.)+2NO_3^-(aq.)+2Ag(s)[/tex]

As, nitrate ions are present on both the sides of the reaction. Thus, it will not be present in the net ionic equation and are spectator ions.

The net ionic equation for the above reaction follows:

[tex]Cu(s)+2Ag^+(aq.)\rightarrow Cu^{2+}(aq.)+2Ag(s)[/tex]

Hence, the net ionic equation is written above.

The formula of the compound formed in the reaction between aluminum and sulfur is

Answers

The formula is Al2S3

Write the balanced molecular equation for the neutralization reaction between hi and ba(oh)2 in aqueous solution. include physical states.

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So, Ba is divalent. This means that each Ba(OH)2 requires two I in order to produce one BaI2 molecule.
The two hydrogens from the 2 HI molecules will combine with 2 OH of Ba(OH)2 forming 2 water (H2O) molecules.

The equation which illustrates this reaction in as follows:
2 HI (aq) + Ba(OH)2 (s) ........> BaI2 (aq) + 2 H2O (l)
where:
aq refers to aqueous state
s refers to solid state and
l refers to liquid state.

2HI(aq)+Ba(OH)2(aq) ----> 2H2O(l) + BaI2(aq)

Which element in period 4 has the highest electronegativity? potassium calcium copper bromine

Answers

The answer would be bromine because electronegativity increases as you move up and to the right on the periodic table, and if you keep moving right you will see that bromine has the highest electronegativity out of those four elements.

Answer: Bromine has the highest electronegativity in period 4 of the periodic table.

Explanation:

Electronegativity is defined as the tendency of an atom to attract the shared pair of electrons towards itself whenever a bond is formed.

This property of an atom increases as we move from left to right in a period because the number of charge on the nucleus gets increased.

But this property decreases as we move from top to bottom in a group because electrons get add up in the new shells which make them further far away from the nucleus.

For the given options:

Potassium is present in Group 1, Period 4 of the periodic table.

Calcium is present in Group 2, Period 4 of the periodic table.

Copper is present in Group 11, Period 4 of the periodic table.

Bromine is present in Group 17, Period 4 of the periodic table.

Hence, bromine will have the highest electronegativity in Period 4.

Dinitrogen tetroxide decomposes to produce nitrogen dioxide gas. When dinitrogen tetroxide is sealed in an evacuated glass container, the closed system eventually reaches dynamic equilibrium. Which statement describes the graph of the rate of the forward reaction over time? It starts high and gradually decreases until it levels out above zero. It starts high and gradually decreases until it reaches a rate of zero. It starts low and gradually increases until it levels out at a rate above zero. It starts low and gradually increases until it reaches a maximum rate.

Answers

Final answer:

The rate of the forward reaction where dinitrogen tetroxide decomposes to nitrogen dioxide starts high and gradually decreases until it levels out above zero, due to reaching a state of dynamic equilibrium.

Explanation:

In the reaction where dinitrogen tetroxide decomposes to produce nitrogen dioxide, the graph of the rate of the forward reaction over time would start high and gradually decrease until it levels out above zero. This is because when the reaction begins, the concentration of reactant (dinitrogen tetroxide in this case) is at its maximum, thus the rate of the forward reaction is high. However, as the reaction progresses and more product (nitrogen dioxide) is generated, the concentration of dinitrogen tetroxide decreases and thus the rate of the forward reaction also decreases. This continues until a dynamic equilibrium is reached where the rate of the forward reaction equals the rate of the reverse reaction and the concentrations of reactant and product are constant.

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The rate of the forward reaction in the decomposition of N₂O₄ to NO₂ starts at zero, increases as the reaction proceeds, and levels out above zero once dynamic equilibrium is reached, where it becomes equal to the reverse reaction rate.

When dinitrogen tetroxide (N₂O₄) decomposes to produce nitrogen dioxide (NO₂), we observe the concept of chemical equilibrium in a closed system. Initially, the rate of the forward reaction, which is the decomposition of N₂O₄ to 2NO₂, starts at zero because there is no NO₂ to decompose. As the decomposition proceeds, this rate increases as more N₂O₄ is converted to NO₂. Over time, the forward reaction rate gradually increases and then levels out above zero when dynamic equilibrium is reached. At equilibrium, the rate of the forward reaction becomes equal to the rate of the reverse reaction, which is the dimerization of NO₂ to reform N₂O₄.

how many electrons would be represented in the lewis dot notation for an atom of oxygen?A,2.B.6.C.8.D.18

Answers

The answer is b since oxygen has 6 valence electrons.

The reaction of hemoglobin with oxygen can be written as follows. hb + o2 â hbo2 if the amount of oxygen available to the blood decreases significantly, what happens to the individual involved?

Answers

Oxygen is needed to carry out a lot of biochemical processes in the body. If the amount of oxygen available to the blood decreases significantly a lot of things will go wrong in the body. For instance, lack of adequate oxygen will lead to the death of neurons which will eventually leads to brain cells death and irreparable brain damage. Oxygen is also needed for cellular respiration, without respiration, there will not be oxygen for carrying out various cellular activities and this will result into death. Oxygen deprivation will also leads to difficulty in breathing and other associated problems.

Oxygen has an electronegativity of 3.5, and carbon has an electronegativity of 2.5. how is charge distributed on an oxygen atom when it bonds with a carbon atom?

Answers

When oxygen has an electronegativity of 3.5, and carbon has an electronegativity of 2.5, then the oxygen atom would have a slightly negative charge. The oxygen atom in  the carbon monoxide molecule would pull more electrons to its side since it has higher electronegativity making it slightly negative and the carbon would have a slightly positive charge as it would contain less electrons. This results to the formation of a polar molecule. A polar molecule is made when the molecule contains a slightly positive end and a slightly negative end. It would have a net dipole which is a result of the partial opposing charges in the molecule.

Final answer:

In a carbon-oxygen bond, oxygen, being more electronegative, pulls the bonding electrons closer, resulting in oxygen having a slight negative charge and carbon a slight positive charge, forming a polar covalent bond.

Explanation:

When a carbon atom bonds with an oxygen atom, the distribution of charge between them reflects their difference in electronegativity. Oxygen, with an electronegativity of 3.5, has a stronger pull on the bonding electron pairs than carbon, which has an electronegativity of 2.5. This results in the electrons being drawn more towards oxygen, making the oxygen atom slightly negatively charged (δ-) and the carbon atom slightly positively charged (δ+). The carbon-to-oxygen double bond, being more polar than a carbon-to-oxygen single bond, emphasizes this effect, making the oxygen even more electronegative in comparison to carbon. Therefore, in this bond, oxygen ends up with a partial negative charge, while carbon acquires a partial positive charge, exemplifying a polar covalent bond.

The product formation was decreased when a substance b was added to an enzyme reaction. more substrate being added did not increase the amount of produce formed. based on this we assume that substance b could be

Answers

When the product formation is decreased if a substance B is added to an enzyme reaction and more substrate being added would not increase the amount of produce formed, then we assume that substance b could be a noncompetitive inhibitor. This type of inhibitor would be one that would bind to the enzyme with or without the presence of a substrate in different sites at the same time. It would change the conformation of the enzyme and also the active sites. As a result, the substrate would not be able to bind to the enzyme more effectively than the usual. The overall efficiency would decrease.

If the temperature of a reaction is increased, the reaction proceeds at a much quicker rate because the

Answers

Explanation:

When we increase temperature of a substance then bond between the atoms will start to break and the molecules will move apart from each other. As a result, there will be increase in number of collisions between the molecules. Thus, reaction will occur at a faster rate.

Also,   K.E = [tex]\frac{3}{2}kT[/tex]

where          k = boltzmann constant

                    T = temperature

Hence, kinetic energy is proportional to temperature. So, more is the temperature more will be the kinetic energy. Therefore, more will be the rate of reaction.

Element x is a poor conductor of heat, has a low boiling point, and is a brittle solid at room temperature. where on the periodic table would element x most likely be found?

Answers

Answer is: nonmetals.

Nonmetals are far right at Periodic table, except hydrogen (H).

The nonmetals are divided into two categories: reactive nonmetals and noble gases.

The type of bond in nonmetal is covalent bond, there is no free electrons, so they do not conduct heat.

Intermolecular forces are weak, so they have low boiling points.

Nonmetals have low electrical and thermal conductivity .

Final answer:

Element x would most likely be found on the right side of the periodic table, where nonmetals are located.

Explanation:

The periodic table is a tabular arrangement of chemical elements, organized by increasing atomic number and similar chemical properties. Elements are grouped into rows (periods) and columns (groups or families) based on their electron configurations. This table provides a systematic way to understand and study the properties and relationships of all known elements.

Based on the given information, Element x is a nonmetal that is a poor conductor of heat, has a low boiling point, and is a brittle solid at room temperature. Nonmetals are typically found on the right side of the periodic table. Therefore, Element x would most likely be found on the right side of the periodic table, where nonmetals are located.

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Fill in the coefficients that will balance the following reaction: a0Na + a1H2O → a2NaOH + a3H2

Answers

Hey there !  :

Na + 2 H2O = 2 NaOH + 1 H2

Sodium + Dihydrogen Monoxide = Natriumhydroxid + Hydrogen

Coefficients:

Reagents  :  Na = 2
                    H2O = 2
   

Products :  NaOH = 2
                  H2 = 1

Answer : The balanced chemical reaction will be,

[tex]2Na+2H_2O\rightarrow 2NaOH+H_2[/tex]

Explanation :

Balanced chemical reaction : It is defined as the number of atoms of individual elements present on reactant side must be equal to the product side.

The given unbalanced chemical reaction is,

[tex]a_0Na+a_1H_2O\rightarrow a_2NaOH+a_3H_2[/tex]

This chemical reaction is an unbalanced reaction because in this reaction, the number of atoms of hydrogen are not balanced while all the atoms are balanced.

In order to balanced the chemical reaction, the coefficient 2 is put before the [tex]Na,H_2O\text{ and }NaOH[/tex]

Thus, the balanced chemical reaction will be,

[tex]2Na+2H_2O\rightarrow 2NaOH+H_2[/tex]

Explain the importance of carbohydrates and lipids in the human body. Include a discussion of at least two functions of carbohydrates and the roles of two groups of lipids.

Answers

Carbohydrates are a group of molecules made out of carbon,hydrogen and oxygen. There are different types of carbs, such as the monosaccharides, the disaccharides and the polysaccharides. The most important metabolic substrate is glucose which is a monosaccharide and it is needed for respiration to produce energy. Lactose is a disaccharide, made of galactose and glucose and it is the carbohydrate for young mammals.Glycogen is a polysaccharide which is made of many glucose molecules, and it is an energy store.
Lipids are anither group of molecules which is made of the same elements as the carbohydrates but at differeent proportions.In the human body there are different types of lipids which have numerous functions like insulation, energy storing, production of certain hormones etc.Cholesterol is a lipid molecule which is responsible for maintaing the fluidity of the cell membrane. A phospholipid is a component of the cell membrane as it makes up the bilayer.

Did your response contain the following points? You may have discussed additional points that are not listed here.  

Both carbohydrate and fat molecules release energy when cells break them down.

Many carbohydrates contain fiber, which the body cannot break down but which can help the digestive system function.

Sterols are important lipids that cells can convert into compounds the body needs, such as vitamins, some hormones, and bile salts.

Phospholipids are important structural components of cells.

What is the ph of a solution containing the strong base ba(oh)2 at a concentration of 0.064 mol/l?

Answers

The pH of a solution is a measure used to evaluate the acidity of a solution. It is related to the hydronium ion concentration in the solution. It is expressed as pH = -log [H+]. Also, it is related to pOH by the equation 14 = pH + pOH. It is stated that the substance given in the problem is a strong base which means that it completely dissociates into ions. It dissociates as follows:

Ba(OH)2 = Ba^2+ + 2OH-

To determine the pH of the solution, we need to determine the OH- concentration. Then, find pOH. We do as follows:

[OH-] = 0.0064 mol Ba(OH)2 / L ( 2 mol OH- / 1 mol Ba(OH)2 ) = 0.0128 mol OH- / L

pOH = -log (0.0128) = 1.8928
pH = 14 - 1.8928 = 12.1072

Which of these organelles produces h2o2 as a by-product?

Answers

Final answer:

Peroxisomes, an organelle found in both animal and plant cells, produce hydrogen peroxide (H2O2) as a by-product during detoxification and metabolic processes. They also safely break down H2O2 into water and oxygen, shielding the rest of the cell from this compound's potential toxicity.

Explanation:

The organelle that produces H2O2 (hydrogen peroxide) as a by-product is the peroxisome. Peroxisomes are small, round organelles enclosed by single membranes. They perform oxidation reactions that break down fatty acids and amino acids, and also detoxify many poisons that may enter the body. During these oxidation reactions, they release H2O2, which can damage cells. However, these reactions are confined to peroxisomes, where enzymes safely break down the H2O2 into oxygen and water. This makes peroxisomes crucial for neutralizing harmful toxins in cells.

For example, alcohol is detoxified by peroxisomes in liver cells. Glyoxysomes, which are specialized peroxisomes in plants, play a role in converting stored fats into sugars. Therefore, peroxisomes fulfill numerous crucial roles in both animal and plant cells which includes producing and then safely breaking down H2O2.

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The peroxisome is the organelle that produces H2O2 as a by-product during oxidation reactions and detoxification processes, but contains enzymes to convert it into harmless substances.

The organelle in question that produces hydrogen peroxide (H2O2) as a by-product is the peroxisome. Peroxisomes perform a variety of metabolic processes, primarily oxidizing fatty acids and detoxifying harmful substances. The toxic by-product of these reactions is H2O2, which peroxisomes contain within themselves to prevent cellular damage. Enzymes such as catalase within peroxisomes convert H2O2 into water and oxygen, mitigating the potentially harmful effects of hydrogen peroxide on the cell.

"what is the volume (in cm3) of a 9.37 g piece of metal with a density of 4.66 g/cm3?"

Answers

we know that, Density = mass/ volume 
So, volume = mass / density = 9.37g / 4.66 g/cm³ = 2.011 cm³
 


Answer : The volume of a piece of metal is [tex]2.01cm^3[/tex]

Explanation :

Density : It is defined as the mass contained per unit volume.

Formula used for density :

[tex]Density=\frac{Mass}{Volume}[/tex]

Given :

Mass of a piece of metal = 9.37 grams

Density of metal = [tex]4.66g/cm^3[/tex]

Now put all the given values in the above formula, we get the volume of a piece of metal.

[tex]4.66g/cm^3=\frac{9.37g}{Volume}[/tex]

[tex]Volume=\frac{9.37g}{4.66g/cm^3}[/tex]

[tex]Volume=2.01cm^3[/tex]

Therefore, the volume of a piece of metal is [tex]2.01cm^3[/tex]

When an atom releases gamma radiation,
A. the mass number decreases by one.
B. the atomic number decreases by one.
C. the mass number increases by four.
D. the atomic number remains the same.

Answers

The answer is D. the atomic number remains the same.

Answer: The correct answer is Option D.

Explanation:

Gamma radiations are released when an atom undergoes gamma decay. During this decay process, a unstable nuclei gives off excess energy through a spontaneous electromagnetic process and it further releases [tex]\gamma -radiations[/tex]. The radiations released does not carry any charge and hence are electrically neutral.

Atomic number of the  atom going this decay does not change.

[tex]_Z^A\textrm{X}^*\rightarrow _Z^A\textrm{X}+_0^0\gamma[/tex]

Thus, the correct answer is Option D.

Three treatments of different starting materials are listed. Which statement explains the treatments? Substance 1 was activated by a decrease in temperature, Substance 2 was activated by the change in concentration, and Substance 3 decreased the surface area. Substance 1 was activated by a decrease in temperature, Substance 2 was activated by the change in pressure, and Substance 3 increased the surface area. Substance 1 was activated by the heat and inactivated by ice, Substance 2 was activated by the change in pressure, and Substance 3 decreased the surface area. Substance 1 was activated by the heat and inactivated by ice, Substance 2 was activated by the change in concentration, and Substance 3 increased the surface area.

Answers

 Substance 1 was activated by the heat and inactivated by ice, Substance 2 was activated by the change in concentration, and Substance 3 increased the surface area.

The treatment is explained by temperature in the first substance, concentration in substance 2, and surface area in substance 3. Thus, option D is accurate.

What are the factors of reaction rate?

The rate of the reactions is concerned with the temperature concentration, surface area, etc. Their involvement increases and decreases the reaction rate of the substance present in the reaction mixture.

An increase in temperature by heat increases rate, and ice decreases temperature hence decreasing rate. The second substance starts with an increase in the concentration and the third by increasing surface area.

Therefore, option D. is the treatment for the substances.

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Which is a component of John Dalton’s atomic theory? The ratio of atoms in a compound is fixed. The atoms of different elements are the same. An atom is a small particle of matter that can be broken down. A reaction can create or destroy atoms as well as rearrange them

Answers

The English scientist John Dalton were one of the early scientists who paved the way to science, particularly in atomic chemistry. His atomic theory jumpstarted further developments made by J.J Thomson, Rutherford, Bohr, Schrodinger and many more. 

Dalton's atomic theory can be summarized in 5 key points:

1. Atoms are tiny, indivisible and indestructible particles of an element.
2. Atoms of different elements vary in size and mass.
3. Atoms of an element are uniform in size and mass.
4. Compounds are formulated by a fixed ratio of individual atoms of elements.
5. Reactions undergo by rearranging the atoms of the reactants to form the products.

From the choices, the acceptable answer would be: The ratio of atoms in a compound is fixed. 

Answer:

The right answer is A

Explanation:

Complete each nuclear fission reaction. What is A?

Answers

(235+1)-(90+(1*3)) = 143

Answer:

143

Explanation:

Thinking process:

The equation is balanced by balancing the charges. This gives:

235 + 1 = 90 + A + 3(1)

236 =    90 + A + 3

236  = 93 + A

     A = 236 - 93

         = 143

therefore, the value of A is 143

a radioisotope spontaneously emits charged particles and energy
which is NOT a characteristic of a radioisotope?
a. it is radioactive
b. it is stable
c. it undergoes nuclear decay
d. it emits energy

Answers

B. it is stable

if something spontaneously emits charged particles, there's no way it's stable

The isotopes which are radioactive in nature is said to be radioisotopes. Radioisotope has  unstable atomic nucleus and to attain a stable form, they emit particles and energy.

Since, radioisotopes are very reactive in nature as they are unstable and hence, they decay to form other particles. Energy may be released in the form of alpha particles (helium nuclei), beta particles, (electrons or positrons), or gamma particles (electromagnetic energy).

Hence, incorrect statement is: radioisotope is stable.

A fatty acid with only single bonds between carbon atoms is called a(n) ________ fatty acid.

Answers

Saturated fatty acid

When nitrogen gas reacts with hydrogen gas to form ammonia, what is the coefficient on nitrogen in the balanced equation?

Answers

Nitrogen gas has a chemical formula of N₂, hydrogen gas is H₂ and ammonia is NH₃. If you see the reaction, it would be

N₂ + H₂  → NH₃

You should note that the fundamental laws of nature must apply. According to Dalton's Atomic Theory, one of its postulates states that each compound is composed of a fixed ratio of the number of its individual atoms. This is where the Law of Definite Proportions is coming from. In order to obey this law, you must balance the equation such that the number of moles of each element in a reaction is equal for both sides of the reaction. Thus, the balance reaction is

N₂ + 3 H₂  → 2 NH₃

Thus, the coefficient of Nitrogen is 1.

Final answer:

The coefficient on nitrogen in the balanced equation is 1.

Explanation:

When nitrogen gas reacts with hydrogen gas to form ammonia, the coefficient on nitrogen in the balanced equation is 1. The balanced chemical equation for this reaction is: 3H2 (g) + N2 (g) → 2NH3 (g). In the equilibrium constant expression, the partial pressure of nitrogen is raised to the first power due to the coefficient 1. According to Dalton's Atomic Theory, one of its postulates states that each compound is composed of a fixed ratio of the number of its individual atoms. This is where the Law of Definite Proportions is coming from. In order to obey this law, you must balance the equation such that the number of moles of each element in a reaction is equal for both sides of the reaction. Thus, the balance reaction is

N₂ + 3 H₂  → 2 NH₃

Thus, the coefficient of Nitrogen is 1.

Which solution below has the highest concentration of hydroxide ions?
a.ph = 3.21
b.ph = 12.6
c.ph = 7.93
d.ph = 9.82
e.ph = 7.00?

Answers

B. It has the highest pH so it is the most basic, thus containing the highest concentration of hydroxide ions.

Upon balancing the equation below, how many moles of sodium cyanide are needed to react completely with 3.6 moles of sulfuric acid? H2SO4 + NaCN yields HCN + Na2SO4

Answers

You would need 7.2 moles of sodium cyanide to completely react with 3.6 moles of sulfuric acid

Explanation:

The given chemical equation is as follows.

    [tex]H_{2}SO_{4} + NaCN \rightarrow HCN + Na_{2}SO_{4}[/tex]

Number of reactant atoms are as follows.

H = 2[tex]SO_{4}[/tex] = 1Na = 1CN = 1

Number of product atoms are as follows.

H = 1[tex]SO_{4}[/tex] = 1Na = 1CN = 1

Thus, in order to balance the equation, multiply NaCN by 2 on the reactant side and multiply HCN by 2 on the product side. Therefore, the balanced chemical equation will be as follows.

      [tex]H_{2}SO_{4} +2NaCN \rightarrow 2HCN + Na_{2}SO_{4}[/tex]

Hence, we need [tex]2 \times 3.6[/tex]  = 7.2 moles of NaCN to react completely with 3.6 moles of [tex]H_{2}SO_{4}[/tex].

Why does 50 g of water initially at 0 ∘c warm more quickly than 50 g of an ice/water mixture initially at 0 ∘c?

Answers

50 gram of water initially at 0°C, when we increase the temperature to warm the water, it will warm quickly but if 50 g of an ice/water mixture initially at 0°C warms slowly than simple water.
Because when we increase temperature, in simple water only water absorb that heat and warms quickly. But when we increase the temperature of mixture of ice/water, the temperature or heat is first absorbed by ice to melt and then it will warm, that's why it takes more time.

One important difference between covalent and ionic bonds is that:select one:a. in covalent bonds two atoms share electrons while in ionic bonds two atoms of opposite charge are attracted to each other.b. ionic bonds only occur among water-soluble elements.c. in ionic bonds two atoms share electrons, while in covalent bonds one atom gives one or more electrons to the other atom.d. in ionic bonds both protons and electrons can be shared while in covalent bonds only electrons can be shared.e. ionic bonds are much stronger than covalent bonds.

Answers

A. in covalent bonds two atoms share electrons while in ionic bonds two atoms of opposite charge are attracted to each other

The correct answer is 'a'. In covalent bonds, two atoms share electrons, while in ionic bonds, two atoms of opposite charge are attracted to each other.

In a covalent bond, two atoms share electrons to achieve a stable electron configuration. This sharing of electrons allows both atoms to fill their outermost energy levels and become more stable. An example of a covalent bond is the bond between two hydrogen atoms in a hydrogen molecule . In this case, both hydrogen atoms share their single electron to form a stable molecule.

On the other hand, in an ionic bond, two atoms of opposite charge are attracted to each other due to the transfer of electrons. One atom loses electrons to become positively charged (cation), while the other atom gains electrons to become negatively charged (anion). These oppositely charged ions are then attracted to each other, forming an ionic bond.Thus, the correct option is 'A'.

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