Copper is which type of solid? molecular solid ionic solid covalent atomic solid metallic atomic solid

Answers

Answer 1
It's metallic atomic solid as it is a kind of metal .
Answer 2

Copper is a metallic atomic solid , the atoms are arranged in a regular pattern, with the valence electrons being free to move throughout the structure.Thus, the correct option is metallic atomic solid.

Copper is an example of a metal, and metals typically exhibit metallic bonding, where the valence electrons form a "sea" of delocalized electrons, creating strong bonds between the metal atoms. This allows for the high electrical and thermal conductivity that metals are known for.

Metallic solids are compounds that are entirely comprised of metal atoms that are held together by metallic bonds.Metallic bonding is a type of intramolecular force of attraction that occurs between a lattice of positive ions and a "sea" of delocalized electrons.

Thus, the correct option is metallic atomic solid.

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Related Questions

Aqueous acetic acid is neutralized by aqueous barium hydroxide. express your answer as a balanced molecular equation. identify all of the phases in your answer.

Answers

The balanced molecular equation for the given reaction is:

[tex]2CH_3COOH(aq) \ + \ Ba(OH)_2(aq) \rightarrow \ Ba(CH_3COO)_2(aq) + 2H_2O(l).[/tex]

FURTHER EXPLANATION

To check that the equation is balanced count how many atoms are present for each element in the reactant and product side. If they are the same before and after reaction for all elements, then the reaction is deemed balanced.

The atom counting for the equation is shown below:

[tex]2CH_3COOH(aq) \ + \ Ba(OH)_2(aq) \rightarrow \ Ba(CH_3COO)_2(aq) + 2H_2O(l).[/tex]

Reactants                  →                 Products

C:  (2 x 2) =4                                  C: (2 x 2) = 4

H: (2 x 4) + (1 x 2) =10                    H: (3 x 2) + (2 X 2) = 10

O: (2 x 2) + (1 x 2) = 6                    O: (2 x 2) + (2 x 1) = 6

Ba: 1                                               Ba: 1

Since the number of atoms of each element are similar in the reactants and products, the equation is balanced.

To determine the state of the substances, consider their solubility.

The reactants are both aqueous (aq) as indicated in the problem.

The first product, [tex]Ba(CH_3COO)_2[/tex] is aqueous (aq) because based on the solubility rule, it will dissolve in water. Acetates are generally soluble.

The other product is water which will be liquid (l) since it is the solvent used to dissolve the substances.

LEARN MORESolubility Rules https://brainly.com/question/12984314Net Ionic Equation https://brainly.com/question/12980075

Keywords: acid-base, neutralization, balancing equations, molecular equation

The balanced molecular equation for reaction of acetic acid and barium hydroxide is as follows:

[tex]\boxed{2\text{CH}_3\text{COOH}(aq)+\text{Ba(OH)}_2(aq)\rightarrow\left(\text{CH}_3\text{COO}\right)_2\text{Ba} (aq)+2\text{H}_2\text{O}(l)}[/tex]

Further Explanation:

Neutralization reaction:

This reaction occurs when acid and base react with each other and salt and water are formed. Since these reactions neutralize excess amount of hydrogen or hydroxide ions in the solution, it is named so.

Acetic acid is weak acid and barium hydroxide is strong base. Both react with each other to form salt and water and neutralization reaction takes place.

Chemical equations are written in following different types of equations:

Molecular equations Total ionic equations Net ionic equations

In molecular equations, reactants and products are present in undissociated form. Total ionic equations involve all different types of ions involved in the reactions. But in net ionic equations, only useful ions are written.

In this reaction, [tex]\text{CH}_3\text{COOH}[/tex], reacts with [tex]\text{Ba(OH)}_2[/tex] to form [tex]\left(\text{CH}_3\text{COO}\right)_2\text{Ba}[/tex] and [tex]\text{H}_2\text{O}[/tex]. Here, [tex]\text{CH}_3\text{COOH}[/tex], [tex]\text{Ba(OH)}_2[/tex] and [tex]\left(\text{CH}_3\text{COO}\right)_2\text{Ba}[/tex] are present in aqueous phase while [tex]\text{H}_2\text{O}[/tex] is present in liquid phase. Unbalanced molecular equation becomes,

[tex]\text{CH}_3\text{COOH}(aq)+\text{Ba(OH)}_2(aq)\rightarrow\left(\text{CH}_3\text{COO}\right)_2\text{Ba} (aq)+\text{H}_2\text{O}(l)[/tex]

Number of atoms of all elements on both sides of reaction is written.

On reactant side,

Number of C atom is 1.

Number of H atoms is 6.

Number of Ba atoms is 1.

Number of O atoms is 4.

On the product side,

Number of C atom is 2.

Number of H atoms is 8.

Number of Ba atoms is 1.

Number of O atoms is 5.

Initially, atoms other than carbon, oxygen, and hydrogen are balanced by multiplying with some number on any side. Ba atoms are balanced on both sides. So carbon, hydrogen and oxygen atoms are balanced now. For this, [tex]\text{CH}_3\text{COOH}[/tex] is multiplied by 2 and [tex]\text{H}_2\text{O}[/tex] by 2. Now the balanced equation is as follows:

[tex]2\text{CH}_3\text{COOH}(aq)+\text{Ba(OH)}_2(aq)\rightarrow\left(\text{CH}_3\text{COO}\right)_2\text{Ba} (aq)+2\text{H}_2\text{O}(l)[/tex]

Learn more:

1. Balanced chemical equation: https://brainly.com/question/1405182

2. Identification of all of the phases of the reaction: https://brainly.com/question/8926688

Answer details:

Grade: High School

Subject: Chemistry

Chapter: Chemical reactions and equations

Keywords: chemical reactions, reactants, products, molecular equations, net ionic equation, CH3COOH, H2O, Ba(OH)2, (CH3COO)2Ba, Ba, O, H, C.

What statement correctly describes the key features of the graph of f(x) = 4(1/2)^(x + 1 )− 3

Y-intercept of (0, −1), starts up on the left, gets closer to y = −3 on the right

Y-intercept of (0, −1), starts down on the left, gets closer to y = −3 on the right

Y-intercept of (0, 1), starts up on the left, gets closer to y = −3 on the right

Y-intercept of (0, 1), starts down on the left, gets closer to y = −3 on the right

Answers

Y-intercept of (0, −1), starts up on the left, gets closer to y = −3 on the right.

You have to plot the graph to see it. Google online graphing calculator and enter the equation.

Answer:

The correct option is:

"Y-intercept of (0, −1), starts down on the left, gets closer to y = −3 on the right"

Explanation:

You have the following function:

[tex]f(x)=y=4*(\frac{1}{2}) ^{x+1} -3[/tex]

The intersection on the "y" axis implies that the value at "x" must be zero. So, to calculate the value in "y" you must replace "x" with the value 0 and perform the corresponding calculations:

[tex]y=4*(\frac{1}{2}) ^{0+1} -3[/tex]

[tex]y=4*(\frac{1}{2}) -3[/tex]

[tex]y=2 -3[/tex]

[tex]y=-1[/tex]

Being (x, y) a point on the graph,  the y- intercept is (0,-1).

This function is an exponential function function, whose form corresponds to the general expression:

[tex]g(x)=k*a^{x-h} +b[/tex]

Where:

If a is greater than 1 (a> 1), the function is increasing. On the other hand, if a is less than 1 (a <1), the function is decreasing. b is the independent term of the equation and determines the Horizontal Asymptote, which is a horizontal line to which the function is approaching indefinitely. In this case it is the value -3.

The graph of the function is shown in the attached image.

The correct option is:

"Y-intercept of (0, −1), starts down on the left, gets closer to y = −3 on the right"

Calculate the molar enthalpy change of H2O (l) when liquid water is heated from 41.7 C to 76.2 C

Answers

Enthalpy change is the total heat that is absorbed or evolved in a certain reaction that is being carried in a constant pressure system. It can be calculated by the product of the specific heat of the substance ad the difference of the final temperature and the initial temperature. Molar enthalpy change is the heat evolved or absorbed per 1 mole of a substance.The specific heat of water is 4.18 J per gram of water per degree Celsius. We calculate as follows:

Molar enthalpy change = 4.18 J / g - C ( 76.2 C - 41.7 C ) ( 18.02 g / mol ) = 2598.6642 J or 2.6 kJ

Final answer:

The molar enthalpy change of H2O (l) when liquid water is heated from 41.7 C to 76.2 C can be calculated using the formula: Q = mcΔT

Explanation:

The molar enthalpy change of H2O (l) when liquid water is heated from 41.7 C to 76.2 C can be calculated using the formula:

Q = mcΔT

Where,

Q is the heat energy changem is the mass of waterc is the specific heat capacity of water (4.184 J/g°C)ΔT is the change in temperature (76.2 C - 41.7 C)

From the given equation, we can calculate the molar enthalpy change when 1 mole of water is heated using the molar mass of water (18.015 g/mol).

Using the formula:

ΔH = Q / n

Where,

ΔH is the molar enthalpy changeQ is the heat energy change (calculated earlier)n is the number of moles of water

We can substitute the values into the formula and calculate the molar enthalpy change.

Can just one measurement be considered precise? Can just one measurement be considered accurate?

Answers

Final answer:

A single measurement cannot be considered precise as precision requires consistency across multiple measurements. However, a single measurement can be considered accurate if it closely matches the true or accepted value. Accuracy and precision are critical in scientific measurements for validity.

Explanation:

The concepts of accuracy and precision are fundamental in scientific measurements. When it comes to a single measurement being considered precise or accurate, context is essential. Precision refers to the consistency of repeated measurements. Therefore, one isolated measurement cannot be labeled as 'precise' without additional data to compare it to. However, a single measurement can be considered accurate if it is very close to the true or accepted value. For instance, if you measure a piece of standard computer paper and it states that it is 11.0 inches long, if you measure it once and obtain 11.1 inches, that single measurement can be considered quite accurate, assuming the stated length is correct.

Nevertheless, precision is really about the reproducibility of multiple measurements, and accuracy concerns how close a measurement is to the true or accepted reference value. For instance, if you have a series of measurements showing 11.1 in., 11.2 in., and 10.9 in., these could be considered both accurate and precise, as they are close to the true value of 11.0 inches and to each other. Conversely, a single measurement of 12 inches would be neither accurate (not close to 11.0 inches) nor precise if the rest of the measurements are significantly different from 12 inches.

Why does a compound have characteristic properties?

Answers

A compound is a combination of elements chemically combined. Briefly explain why a beaker containing sand and water is a mixture although sand itself is a pure substance. Because it's a combination of two or more substances. ... Briefly explain why a compound has characteristic properties

Answer: Because of the arrangement of atoms in a compound.

Explanation:

A compound is defined as the chemical specie which is formed by the combination of two or more different type of atoms. For Example: [tex]H_2O,O_2[/tex] etc...

A compound has different physical and chemical properties than corresponding elements because of change in identity. For Example: Hydrogen and oxygen are gases, but the compound formed by the combination of these two that is water is liquid.

In a chemical compound, elements are combined in a fixed ratio of their masses.

Hence, a compound has characteristic property because of the arrangement of atoms in a compound

Carbon monoxide poisoning is sometimes mistakenly identified as what?

Answers

When we breathe red blood cells bond to the oxygen but when we inhale carbon monoxide (CO), it sticks to red blood cells and block the oxygen and suffocation occurs. It is also known as “Silent Killer”.

Headaches, nausea and fatigue are some of early symptoms of carbon monoxide poisoning. It is sometimes mistakenly identified as “Flu”. Because this gas cannot be detected at home. It is produced by common household appliances, if not proper ventilated, such as water heaters, generators, cars etc.

Carbon monoxide poisoning and acute toxicity are related and often confused due to similar symptoms such as headache, weakness, and even death.

Carbon monoxide poisoning occurs due to inhaling excessive levels of carbon monoxide (CO), which can lead to symptoms like headache, dizziness, weakness, and even death. This poisoning is sometimes mistakenly identified as acute toxicity due to exposure to carbon monoxide.

Loss of consciousness, arrhythmias, seizures, and even death can result from large CO exposures.Long-term complications may include chronic fatigue, memory issues, and movement problems.

What substance is added to an organic molecule to test for the degree of saturation? bromine hydrogen gas water hydrogen bromide?

Answers

This substance is bromine.

Final answer:

Bromine is added to an organic molecule to test for saturation; it reacts with unsaturated compounds causing a color change, while the color remains the same in the presence of saturated compounds.

Explanation:

The substance added to an organic molecule to test for the degree of saturation is bromine. This test is based on bromine's distinctive brownish-orange color, which fades upon reaction with unsaturated compounds. In the reaction, bromine is added to the double or triple bonds present in unsaturated hydrocarbons, causing a decolorization as it forms a dibromo compound. On the other hand, if the organic molecule is saturated, the bromine retains its color as there are no double or triple bonds for the bromine to react with.

On a molecular level, the reaction demonstrates the difference between saturated and unsaturated hydrocarbons. Saturated hydrocarbons, such as alkanes, have a C-H bond that can potentially react with bromine, whereas unsaturated hydrocarbons like alkenes and alkynes have double or triple bonds that readily react with bromine, respectively. This chemical behavior is part of the microscopic domain that helps distinguish structural differences in organic compounds.

1 mol of CCl4 molecules has ____ moles of Cl atoms.

Answers

1 mol of CCl₄ molecules has 4 moles of Cl atoms.

Calculate the percent ionic character of a chemical bond between beryllium and fluorine

Answers

Final answer:

The percent ionic character of a chemical bond, such as between beryllium and fluorine, can be determined using the difference in electronegativity between the two elements based on Pauling's scale. Most bonds exhibit partial ionic character, as they fall within the spectrum between purely ionic and purely covalent.

Explanation:

The percent ionic character of a chemical bond refers to the degree to which the bond exhibits ionic properties. In an ideal ionic bond, electrons are completely transferred from one atom to another. However, in reality, most bonds fall within the spectrum between purely ionic and purely covalent, exhibiting partial ionic character.

In the case of the bond between beryllium and fluorine, you can determine the percent ionic character by making use of Pauling's electronegativity values. First, you would calculate the difference in electronegativity between the two elements. Then, you use this difference to estimate the percent ionic character based on Pauling's scale.

For example, consider the hypothetical molecule HCl mentioned in the reference. Supposed that HCl was completely ionic, its molecular dipole moment was calculated to be 6.09 D. The experimentally measured bond moment, however, turned out to be 1.03 D. The percent ionic character was hence calculated as the bond moment divided by the theoretical fully ionic bond moment, multiplied by 100%. The result was 17%.

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How many hydrogen atoms are in each molecule of trisilylamine?

Answers

Answer:

9

Explanation:

The amine functional group is obtained by subsititution of one or more hydrogen atoms in the ammonia compound.

Ammonia is NH₃.

Then,

by substituting one hydrogen you obtain R - NH₂.

by substituting two hydrogens you obtain R' - NH - R''

by subsituting the three hydrogens you obtain:

                        R'''

                         |

                 R' -  N - R''

In this case, the three subsitutuents are silyl groups. The silyl group is derived form silane and is SiH₃. So, the tcompound trisilylamine is:

                    SiH₃

                      |

          SiH₃ -  N - SiH₃

Thus, you can count 3 hydrogen atoms for every silylgroup for a total of 9 hydrogen atoms in each molecule of trisilylamine.

the atomic number of boron is 5. what does this tell you about an atom of boron?

Answers

it has 5 atoms and the amount of protons and electrons it has.

Boron is 5 in the periodic table of elements and the mass is rounded up 10 11. If the atomic number of boron is 5, that means that there would be 5 protons and 5 electrons.

In which situation can a mixture always be called a solution?

Answers

When the mixture is homogeneous 
. A mixture can be called as a solution when the mixture is homogeneous. When a mixture has uniform properties all throughout it is commonly referred as a solution. Solution has different substances in it but is classified into two: the solvent and the solute. hope this helped 

What happens to the atomic mass of the elements moving from left to right within a period?

Answers

As you move across a period, the atomic mass increases because the atomic number also increases. ... The atomic mass for any given atom mainly comes from the mass of the protons and neutrons.

Final answer:

Moving from left to right across a period on the periodic table, the atomic mass of the elements generally increases. This is due to an increase in the number of protons and neutrons in the nucleus. For instance, in the second period, the atomic mass of Lithium is less than that of Neon.

Explanation:

As you move from left to right across a period on the periodic table, there is an increase in the atomic mass of the elements. This happens because the number of protons, which contribute to the atomic mass, in the nucleus of an atom increases. The atomic mass is approximated by the mass number, which is the sum of the number of protons and neutrons in an atom's nucleus. Therefore, as the number of protons (and usually neutrons) increases, the atomic mass of the elements also generally increases.

For example, in the second period, the atomic mass of Lithium (Li) is about 7 amu, while the atomic mass of Neon (Ne), at the end of the same period, is about 20 amu.

Thus, when moving from left to right within a period of the periodic table, the atomic mass generally increases due to an increase in the number of protons and neutrons in the nucleus.

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In the sun, two hydrogen nuclides react together to make an atom of helium. the process releases energy. which type of reaction is this

Answers

In the sun, two hydrogen nuclides react together to make an atom of helium. the process releases energy. This is  nuclear fusion reaction. The Sun uses this reaction to release energy and heat. Hydrogen nuclei fuse together to form helium nuclei and release energy. The formula that describes this reaction is the following:  1/1H+1/1H->3/2He

Answer:

Fusion.

Explanation:

The core squeezes together so tightly that four hydrogen nuclei combine to form one helium atom. This is the textbook definition of nuclear fusion.

what are 2 key characteristics of a good scientific investigation

Answers

use your five senses in any scientific investigation, and they would be good characteristics.

Brainliest if answered in the next 5m


A weak acid, like Hydrofluoric acid, can be dangerous if _____. Select all that apply.

concentrated
used without adult supervision
used without goggles
used without gloves
tasted

Answers

Tasted, and Used without gloves.
used without gloves. It is a dangerous and extremely powerful chemicals if touched. I hope this helped. :)

How many electrons are transferred in the ionic bond between sodium and chlorine in nacl?

Answers

From the periodic table, we can find that:
Sodium has 11 electrons with a configuration of (2,8,1)
Chlorine has 17 electrons with a configuration of (2,8,7)

Based on this, we can see that sodium needs to lose one electron to become stable with valence shell having 8 electrons.
On the other hand, chlorine needs to gain one electron to become stable with valence shell having 8 electrons.

In sodium chloride, the sodium donates this one electron to chlorine forming an ionic bond so they both become stable.

Answer:

1

Explanation:

Just got it right on the quiz.

That is the exchange to fill.

Hope this helps.

why N2 has a lower boiling point than CO?

Answers

CO HAS A HIGHER BOILING POINT BECAUSE THE INTEMOLECULAR FORCES ARE STRONGER THEN N2 WHICH IS NON POLAR. CO HAS A HIGHE BOILING POINT BECAUSE THE INTEMOLECULAR FORCES ARE STRONGER THEN N2 WHICH IS NON POLAR
Final answer:

N2 has a lower boiling point than CO because N2, being a nonpolar molecule, can't exhibit dipole-dipole attractions that CO, being a polar molecule, can. This results in weaker intermolecular forces in N2 than CO, hence a lower boiling point.

Explanation:

The reason why N2 has a lower boiling point than CO is due to the different intermolecular forces they experience. Both CO and N2 are diatomic molecules with similar atomic masses, therefore, they experience similar London dispersion forces. However, the key difference is that CO is a polar molecule and thus, it experiences dipole-dipole attractions. On the other hand, N2 is a nonpolar molecule and therefore, can't exhibit dipole-dipole attractions. Hence, the dipole-dipole attractions in CO are stronger than the dispersion forces in N2, leading to a higher boiling point for CO.

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1.64 mol of nickel at 150.13ºC is placed in 1.00 L of water at 25.09ºC. The final temperature of the nickel-water mixture is 26.34ºC. What is the specific heat of nickel?

a. 0.439 J K-1 mol-1
b. 0.554 J K-1 mol-1
c. 2.28 J K-1 mol-1
d. 25.7 J K-1 mol-1
e. 31.6 J K-1 mol-1

Answers

Heat gained or released by a system can be calculated by multiplying the given mass to the specific heat capacity of the substance and the temperature difference. It is expressed as follows:

Heat = mC(T2-T1) 

When two objects are in contact, it should be that the heat lost is equal to what is gained by the other. From this, we can calculate the what is being asked in the problem. We do as follows:

Heat gained = Heat lost
m C (Tf-Ti) = - m C (Tf-Ti) 
Since what is aksed is the specific heat capacity in units of J/mol-K, we change m into n which is the number of moles of a substance.
1.64 C (150.13 - 26.34) = (1000 /18.02) (4.18 x 18.02 )(26.34 - 25.09)
C = 25.7 J / mol-K <----------OPTION D

If 832J of energy is required to raise the temperature of a sample of aluminum from 20.0°C to 97.0°C, what mass is the sample of aluminum? (The specific heat of aluminum is 0.90 J/(g × °C).) 0.10 g 10.0 g 12.0 g 57.7 g

Answers

Given:
The energy required is
 Q = 832 J
The temperature rise is
 ΔT = 97 - 20 C
      =  77 C = 77 K
The specific heat is
 c = 0.9 J/(g-C)
    = (0.9 J/(g-K)*(1000 g/kg)
    = 900 J/(kg-K)

Let the mass be m kg.
Then
(m kg)*(c J/(kg-K))*(ΔT K) = (Q J)
or
900*77*m = 832
m = 0.012 kg = 12 g

Answer:  The mass of aluminum is 12.0 g

Hello!

If 832J of energy is required to raise the temperature of a sample of aluminum from 20.0°C to 97.0°C, what mass is the sample of aluminum? (The specific heat of aluminum is 0.90 J/(g × °C).

a) 0.10 g

b) 10.0 g

c) 12.0 g

d) 57.7 g

Data:

Q (Amount of heat) = 832 J

m (mass) = ?

c (Specific heat) = 0.90 J/(g × ° C)

T (final) = 97 ºC

To (initial) = 20 ºC

ΔT = T - To → ΔT = 97 - 20 → ΔT = 77 ºC

Formula:

Q = m*c*ΔT  

Solving:

[tex]Q = m*c*\Delta{T}[/tex]

[tex]832 = m*0.90*77[/tex]

[tex]832 = 69.3\:m[/tex]

[tex]69.3\:m = 832[/tex]

[tex]m = \dfrac{832}{69.3}[/tex]

[tex]\boxed{\boxed{m \approx 12.00\:g}}\end{array}}\qquad\quad\checkmark[/tex]

Answer:

12.0 g

____________________________________

I Hope this helps, greetings ... Dexteright02! =)

He approximate molar concentration of several chemicals are given. find the ph of each. use the calculator and round to the nearest tenth, if necessary. oven cleaner: [h+] = 10−13 ph = water: [h+] = 0.0000007 ph = blood: [h+] = 0.00000004 ph = vinegar: [h+] = 0.0063 ph =

Answers

Answer:

oven cleaner: ph=13

water: ph=6.2

blood: ph=7.4

vinegar ph=2.2

Explanation:

got it right on ed

Final answer:

The pH values for the given solutions are calculated using the formula pH = -log[H+], where [H+] is the concentration of hydrogen ions. The pH values for an oven cleaner, water, blood, and vinegar are found to be 13.0, 7.2, 7.4, and 2.2 respectively.

Explanation:

To calculate the pH of a solution, we use the formula pH = -log[H+]. Here [H+] represents the molar concentration of hydrogen ions in moles per liter (M).

Oven cleaner: With [H+] = 10-13 M, we find pH as follows:

pH = -log(10-13) = 13.0

Water: For [H+] = 0.0000007 M or 7×10-7M:

pH = -log(7×10-7) = 7.2

Blood: Given [H+] = 0.00000004 M or 4×10-8M:

pH = -log(4×10-8) = 7.4

Vinegar: With [H+] = 0.0063 M:

pH = -log(0.0063) = 2.2

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Explain how scientific observations led to the development of, and changes to, the periodic table.

Answers

By the observations made by scientists on the properties of the elements that is found in the periodic table, these elements are arranged accordingly depending on their properties. The rows are called as the periods while columns are known as groups. In the case of the size of the atom, they are arranged in a way that from left to right across a period the atomic radius increases as well as going down a group. For reactivity, it increases from left to right and up to down. Also, the elements are arranged with respect to increasing atomic number. It is Dmitri Mendeleev that is one of the chemist  who arranged the periodic table which has been used up to till now.

identify solute and solvent in 80 solution of ethyl alcohol with water

Answers

The solute is the part of the solution that dissolves in the second component (usually a fluid). Therefore, for the mentioned solution, the solute is ehyl alcohol since it is the one dissolving in water.

As for the solvent, it is the component in which the solute dissolves. In this case, it is water.

Methanol is an important solvent. it is also an important starting material for the synthesis of other molecules. most methanol today is obtained from the

Answers

CO + 2H₂ → CH₃OH

Methanol is synthesized from carbon monoxide and hydrogen.

the basic organizational feature of the periodic table of elements

Answers

Atomic Number. (Or the number of protons in that element, same thing)

substance which allows energy to pass through it

Answers

A substance which allows energy (heat or electricity) to pass through it is known as a conductor.

These substances usually have free electrons which allows the charges to flow easily in the substance, thus, transferring energy.

Other substances which do not have free electrons and do not allow energy to pass through them are known as insulators.

According to the collision theory what two factors must be true to successfully result in a reaction

Answers

Explanation:

According to collision theory, more is the number of collisions between the particles of reactants more will be the rate of a reaction.

Two important factors of collision theory are as follows.

Sufficient energyOrientation

Sufficient energy: Molecules participating in a chemical reaction should have sufficient amount of energy so that they can overcome activation energy barrier and participate effectively in the reaction.

Orientation: Collision between the molecules should take place with proper orientation so that they successfully result in the formation of products.

According to the collision theory, the two factors that must be true for a reaction to occur are sufficient energy and proper orientation of reactant particles.

What is the collision theory of reactions?

The collision theory states that a reactant molecules must collide effectively with energy greater than or equals to activation energy for products to be formed.

According to the collision theory, the two factors that must be true are:

reactant molecules must be oriented properly the reactant molecules must have sufficient energy

Therefore, sufficient energy and proper orientation of particles is necessary for product formation.

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If you have a solid like ice (solid water), which of the following substances below would most closely resemble the structure of ice? indium cadmium quartz topaz

Answers

The correct option is QUARTZ. Quartz and ice belong to the hexagonal crystal group. They both have four axes, three of these axes are equal in length at an angle of 120 degree from one another and the last axis is either longer or shorter at a right angle to the other axes.

Calcium fluoride (CaF2) has a solubility constant of 3.45 x 10-11
. What is the molar solubility of CaF2 in water?



4.15 x 10-6 M
5.87 x 10-6 M
2.05 x 10-4 M
3.26 x 10-4 M

Answers

Ksp=3.45×10⁻¹¹

CaF₂(s) ⇄ Ca²⁺(aq) + 2F⁻(aq)

Ksp=[Ca²⁺][F⁻]²

[Ca²⁺]=C(CaF₂)
[F⁻]=2C(CaF₂)

Ksp=4{C(CaF₂)}³

C(CaF₂)=∛(Ksp/4)

C(CaF₂)=∛(3.45×10⁻¹¹/4)=2.05×10⁻⁴ mol/L

2.05×10⁻⁴ M

Calculate the molar solubility of Ni(OH)2 in water. Use 2.0 * 10^-15 as the solubility product constant of Ni(OH)2.

Answers

Ni(OH)₂(s) ⇄ Ni²⁺(aq) + 2OH⁻(aq)

Ksp=2.0*10⁻¹⁵

Ksp=[Ni²⁺][OH⁻]²

c=[Ni²⁺]=[OH⁻]/2

Ksp=c×(2c)²=4c³

c=∛(Ksp/4)

c=∛(2.0×10⁻¹⁵/4)=0.01995 mol/L ≈ 0.02 mol/l

Answer:

The molar solubility of [tex]Ni(OH)_2[/tex] in water [tex]7.93\times10^{-6} mol/L[/tex].

Explanation:

[tex]Ni(OH)_2\rightleftharpoons Ni^{2+}+2OH^-[/tex]

                        S        2S

Solubility of Nickel hydroxide =[tex]K_{sp}=2.0\times 10^{-15}[/tex]

[tex]K_{sp}=S\times 2S^{2}=4S^3[/tex]

[tex]2.0\times 10^{-15}=4S^3[/tex]

[tex] S=7.93\times10^{-6} mol/L[/tex]

The molar solubility of [tex]Ni(OH)_2[/tex] in water [tex]7.93\times10^{-6} mol/L[/tex].

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