The grams of carbon monoxide is 148. 68 g
calculation
Fe₂O₃(s) + 3CO (g) → 3 CO₂(g) + 2Fe (s)
Step 1: find the moles of CO
moles = mass÷ molar mass
from periodic table the molar mass of Fe =56 g/mol
moles = 198.5 g÷ 56 g/mol =3.54 moles
Step 2 : use the mole ratio to determine the moles of Co
from given equation Co: Fe is 3: 2
therefore the moles of CO = 3.54 moles x 3/2= 5.31 moles
Step 3 Find mass of Co
mass = moles × molar mass
from periodic table the molar mass of CO = 12+ 16 = 28 g/mol
= 5.31 moles × 28 g/mol = 148.68 g
How many moles of chlorine are in 100g chlorine (Cl)?
A) 0.355
B) 100
C) 64.6
D) 2.82
Answer: D) 2.82
Reasoning: There are 35.453 grams in a single mole.
So divide 100 by 35.453
100/35.453=2.82063577
Rounded 2.82063577 equals 2.82
There are 2.82 moles of chlorine in the 100 gram of chlorine. A mole is a unit of measurement that is used for very tiny particles such as atoms, ions, and molecules.
What is Mole Concept?A mole is a unit of measurement that is used for very tiny particles such as atoms, ions, and molecules. 1 mole is equal to the Avogadro's constant that is [tex]6.2\times 10^{23}[/tex].The number of moles can be calculated by the formula,
[tex]n = \dfrac wm[/tex]
Where,
[tex]n[/tex]- number of moles
[tex]w[/tex] - given mass of chlorine
[tex]m[/tex] - molar mass of the chlorine
Put the values in the formula,
[tex]n = \dfrac {100}{35.45}\\\\n = 2.82 \rm \ g[/tex]
Therefore, there are 2.82 moles of chlorine in the 100 gram of chlorine.
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A mixture with H2 and He exerts a total pressure of 0.48 atm. If there is 1.0 g of H2 and 1.0 g of He in the mixture, what is the partial pressure of the helium gas?
Answer: 0.161 atm
Explanation:
To calculate the partial pressure of helium (He), use the equation PHe = XHe × Ptotal, where XHe is the mole fraction of He, and Ptotal is the total pressure given in the question.
To calculate the mole fraction of helium, we must first calculate the number of moles of helium and hydrogen gas in the mixture.
nHe = 1.00g He/ 4.003 g/mol = 0.2498 mol
nH2 = 1.00g H2 / 2.016 g/mol = 0.4960 mol
ntotal= 0.2498 mol + 0.4960 mol= 0.7458 mol
We can now solve for the partial pressure of helium as follows. Recall that the mole fraction of helium is the ratio of the moles of helium to the total number of moles of gas.
PHe = XHe × Ptotal
= nHe / ntotal × Ptotal
= 90.2498 mol / 0.7458 mol) × 0.480atm
= 0.1608
Therefore, after rounding the answer to two significant figures, we find that the partial pressure of helium gas is about 0.161 atm.
The partial pressure of helium (He) in the mixture containing 1 g of H₂ and 1 g of He is 0.16 atm
We'll begin by calculating the number of mole of each gas present in the mixture.
For H₂:Mass of H₂ = 1 g
Molar mass of H₂ = 2 × 1 = 2 g/mol
Mole of H₂ =?Mole = mass / molar mass
Mole of H₂ = 1/2
Mole of H₂ = 0.5 moleFor He:Mass of He = 1 g
Molar mass of He = 4 g/mol
Mole of He =?Mole = mass / molar mass
Mole of He = 1/4
Mole of He = 0.25 moleNext, we shall determine the total mole.
Mole of H₂ = 0.5 mole
Mole of He = 0.25 mole
Total mole =?Total mole = 0.5 + 0.25
Total mole = 0.75 moleNext, we shall determine the mole fraction of He.
Mole of He = 0.25 mole
Total mole = 0.75 mole
Mole fraction of He =.?
Mole fraction = mole / total mole
Mole fraction of He = 0.25 / 0.75
Mole fraction of He = 0.33Finally, we shall determine the partial pressure of He.
Mole fraction of He = 0.33
Total pressure = 0.48 atm
Partial pressure of He =?Partial pressure = mole fraction × total pressure
Partial pressure of He = 0.33 × 0.48
Partial pressure of He = 0.16 atm
Therefore, the partial pressure of helium (He) in the mixture is 0.16 atm
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CHEM HELP?!? Carbon tetrachloride has been widely used in the cleaning industry, in fire extinguishers, and as a refrigerant. Construct an explanation of how carbon and chlorine combine to form carbon tetrachloride.
A) Nonmetal carbon shares valence electrons with each nonmetal chlorine forming four covalent bonds.
B) Nonmetal carbon loses a valence electron and chlorine metal gains a valence electron to form an ionic bond.
C) Carbon and chlorine are nonmetals and they shares their valence electrons to become ions and form ionic bonds.
D) Chlorine metal loses a valence electron to become a cation and nonmetal carbon gains a valence electron to become an anion forming a covalent bond.
Answer: A) Nonmetal carbon shares valence electrons with each nonmetal chlorine forming four covalent bonds.
Explanation: Carbon has atomic no 6. It has 4 valence electrons. It can only share electrons as it is difficult to gain or lose 4 electrons to complete it's octet.
Chlorine has atomic no 17 . It has 7 valence electrons and need one electron to complete its octet.
Thus carbon will share 4 electrons, one each with four chlorine atoms to form carbon tetra chloride.
Covalent bond is formed by sharing of electrons whereas Ionic bond is formed by transfer of electrons between atoms.
Answer:
its A
Explanation:
did it on usa test prep
a. What is the mass number of an alpha particle?
b. What is the identity of an alpha particle?
c. What kind of charge does an alpha particle have?
a) Answer is: mass number of an alpha particle is is 4.
Muss number is sum of protons and neutrons.
b) Answer is: alpha particle is nucleus of a helium-4 atom, which is made of two protons and two neutrons.
For example, nuclear reaction: ²³⁸U → ²³⁴Th + α (alpha particle).
Alpha decay is radioactive decay in which an atomic nucleus emits an alpha particle (helium nucleus) and transforms into an atom with an atomic number that is reduced by two and mass number that is reduced by four.
c) Answer is: alpha particle has positive charge +2, because it has two protons.
Protons (positive particles) and neutrons (neutral particles) are in the nucleus of an atom.
Final answer:
An alpha particle has a mass number of 4 and is identical to a helium-4 nucleus with a double positive charge. In a magnetic field, the motion of an alpha particle is influenced by its charge, curving the particle's trajectory perpendicularly to its velocity vector and the field direction.
Explanation:
Characteristics of an Alpha Particle
An alpha particle has a mass number of 4. This particle is equivalent to the nucleus of a helium-4 atom, consisting of two protons and two neutrons. Because of this composition, an alpha particle carries a double positive charge (+2).
The Identity of an Alpha Particle
The identity of an alpha particle is the same as a helium nucleus. When it comes to nuclear equations involving alpha decay, ejection of an alpha particle from a parent nucleus results in the formation of a new element with an atomic number reduced by two and a mass number reduced by four.
Behavior in a Magnetic Field
In a magnetic field, the charge of the alpha particle affects its path, causing it to curve due to the Lorentz force. If an alpha particle is moving in the x-direction and the field is in the z-direction, the magnetic force will act in the y-direction, according to the right-hand rule.
How many atoms are in 35.5 g of chlorine?
A. 3 × 10^23 atoms
B. 6.02 × 10^23 atoms
C. 1.2 × 10^24 atoms
D. 3 × 10^24 atoms
(Not D)
Answer: Option (B) is the correct answer.
Explanation:
According to Avogadro's number, one mole of a substance contains [tex]6.022 \times 10^{23}[/tex] atoms or molecules.
As molar mass of chlorine is 35.5 g/mol. Hence, calculate its number of moles as follows.
No. of moles = [tex]\frac{mass}{\text{molar mass}}[/tex]
= [tex]\frac{35.5 g}{35.5 g/mol}[/tex]
= 1 mol
Therefore, number of atoms present in 1.01 mol are calculated as follows.
[tex]1 mol \times 6.022 \times 10^{23}[/tex] atoms/mol
= [tex]6.02 \times 10^{23}[/tex] atoms
Therefore, we can conclude that there are [tex]6.02 \times 10^{23}[/tex] atoms in 35.5 g of chlorine.
The number of atoms in 35.5 g of chlorine is 6.02 × 10²³ atoms.
The correct answer is B. 6.02 × 10²³ atoms.
To calculate the number of atoms in a given mass of chlorine, we need to use Avogadro's number, which is approximately 6.02 × 10²³ atoms/mol.
The molar mass of chlorine (Cl) is approximately 35.5 g/mol.
Now, we can proceed with the calculation:
Number of moles of chlorine = Given mass / Molar mass
Number of moles of chlorine = 35.5 g / 35.5 g/mol = 1 mol
Number of atoms in 1 mol of chlorine = Avogadro's number = 6.02 × 10²³ atoms/mol
So, the number of atoms in 35.5 g of chlorine is 6.02 × 10²³ atoms.
The correct answer is B. 6.02 × 10²³ atoms.
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Which of the following provides evidence to support Rutherford's model of the atomic nucleus?
A. Gold foil experiment
B. Plum pudding model
C. Spectrum of colors emitted by gas
D. Radiation produced when alpha particles hit beryllium
the answer is A: The Gold Foil experiment
Answer: A. Gold foil experiment
Explanation:
Ernest Rutherford discovered the nucleus in 1911 from the results he obtained in several experiments in which he bombarded a thin sheet of gold with alpha particles (a sub-microscopic particle with a positive charge) from a radioactive element.
Rutherford observed, by means of a fluorescent screen, to what extent the particles with which he bombarded the sheet were scattered. Most of them traversed the metal sheet without changing direction; however, a few were reflected backwards with small angles.
Using a mathematical analysis of the forces involved, Rutherford showed that the scattering was caused by a small positively charged nucleus, located in the center of the gold atom. In this way, he deduced that most of the atom is empty space and discovered the atomic nucleus.
what number of electrons balances the charges in this half reaction
[tex]so2 +2h2o so {4}^{2 -} + 4h + [/tex]
Answer : Two electrons balances the charges in this half reaction.
Explanation :
The given half reaction is,
[tex]SO_2+2H_2O\rightarrow SO^{2-}_4+4H^+[/tex]
In this half reaction, there is no charges present on the left side of the reaction but on right side of the reaction, (2+) charge is present. So, two electrons (2-) are added on the right side of the reaction for balances the charge of the half reaction.
The balanced half reaction is,
[tex]SO_2+2H_2O\rightarrow SO^{2-}_4+4H^++2e^-[/tex]
Hence, two electrons balances the charges in this half reaction.
When two or more substances combine, but each keeps it own properties,the new combination is called a (an)
The new combination is called a mixture.
In mixtures, since the substances are not chemically combined together, they still remain their own physical and chemical properties, and can be separated by simple physical methods such as filtration or distillation.
On the other hand, if the two or more substances are combined where they get new properties, the new combination will be called a compound. They cannot be separated by physical methods, but chemical methods such as heating or electrolysis.
Which of the following quantites would have the greatest mass: one mole of carbon atoms, one mole of helium atoms, one mole of neon atoms?
A) one mole of helium atoms
B) one mole of carbon atoms
C) They would have equal masses.
D) one mole of neon atoms
Atomic mass of carbon is 12 so 1 mole = 12 grams.
For helium it is 4.003 grams
For neon it is 20.18 grams
So one mole of neon has the greatest mass.
The mass of 1 mole of neon is greater than 1 mole of carbon or helium. Option D is correct.
What is the Mole concept?The mole is a constant that is used as a unit to measure the small particles such as the atom, ion, and molecules.1 mole is equal to the Avogadro's constant [tex]6.02 \times 10^2^3[/tex]
[tex]n = \dfrac wm[/tex]
Where,
[tex]n[/tex] - number of moles
[tex]w[/tex] - weight (given mass)
[tex]m[/tex] - molar mass
For Carbon,
[tex]1 {\rm \ mole} = \dfrac w {12}\\\\w = 12[/tex]
So, the 1 mole of Carbon has 12 g of mass.
1 mole of Helium has about 4 g of mass.
1 mole of neon has about 20 g of mass.
Therefore, the mass of 1 mole of neon is greater than 1 mole of carbon or helium.
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Match the prefix with the power of ten it represents.
1. mega 10-2
2. kilo 103
3. hecto 10-3
4. deka 106
5. deci 10-1
6. centi 101
7. milli 10-6
8. micro 102
Answer:
Mega- 10^6
Kilo-10^3
Hecto- 10^2
Deca-10^1
Deci-10^-1
Centi-10^-2
Milli-10^-3
Micro-10^-6
All are metric system units
The correct matching of prefixes with the powers of ten they represent is as follows:
1. mega - [tex]\(10^6\)[/tex]
2. kilo - [tex]\(10^3\)[/tex]
3. hecto - [tex]\(10^2\)[/tex]
4. deka - [tex]\(10^1\)[/tex]
5. deci - [tex]\(10^{-1}\)[/tex]
6. centi - [tex]\(10^{-2}\)[/tex]
7. milli - [tex]\(10^{-3}\)[/tex]
8. micro -[tex]\(10^{-6}\)[/tex]
The metric system uses prefixes to denote powers of ten. Here is the explanation for each prefix:
1. Mega (M) is a prefix that stands for one million times the base unit, hence [tex]\(10^6\).[/tex]
2. Kilo (k) is a prefix that stands for one thousand times the base unit, hence [tex]\(10^3\).[/tex]
3. Hecto (h) is a prefix that stands for one hundred times the base unit, hence [tex]\(10^2\).[/tex]
4. Deka (da) is a prefix that stands for ten times the base unit, hence \[tex](10^1\).[/tex]
5. Deci (d) is a prefix that stands for one-tenth of the base unit, hence \[tex](10^{-1}\).[/tex]
6. Centi (c) is a prefix that stands for one-hundredth of the base unit, hence [tex]\(10^{-2}\).[/tex]
7. Milli (m) is a prefix that stands for one-thousandth of the base unit, hence [tex]\(10^{-3}\).[/tex]
8. Micro (µ) is a prefix that stands for one-millionth of the base unit, hence [tex]\(10^{-6}\).[/tex]
The powers of ten are used to express very large or very small numbers concisely. Each prefix represents a specific multiple or fraction of the base unit. For example, a millimeter (mm) is one-thousandth of a meter, and a kilogram (kg) is one thousand times the mass of a gram.
How much fluorine (in grams) does the second sample produce?
I divided 2.58kg of fluorine by the 1.24kg of magnesium, but I'm not sure that's the right way to do this. Should I cross multiply? I read the page in the book, and it had nothing to do with a problem like this.
Answer: 1.94 kg
Explanation: Given : [tex]MgF_2\rightarrow Mg+F_2[/tex]
Sample 1 produces 1.65 kg of Mg and 2.58 kg of [tex]F_2[/tex].
As every chemical reaction follows law of conservation of mass, which says that the mass of products must be equal to the mass of reactants.
Thus mass of [tex]MgF_2[/tex] should be 1.65+2.58 kg = 4.23 kg
1.65 kg of Mg was produced by 4.23 kg of [tex]MgF_2[/tex]
Now the second sample produces 1.24 kg of Mg.
1.24 kg of Mg will be produced by=[tex]\frac{4.23}{1.65}\times {1.24}=3.18 kg[/tex]
Now again law of conservation of mass is to be followed so mass of [tex]F_2[/tex] will be= mass of [tex]MgF_2[/tex] - mass of [tex]Mg[/tex]
=(3.18 kg -1.24 kg) = 1.94 kg
What is not true about most combustion reactions? a) elemental carbon is a product b) energy is released c) a carbon-based fuel is a reactant d) molecular oxygen is a reactant
It would be A bc carbon is NOT usually a product. You can find out more about the by searching combustion reactions, then u should be able to answer the questions on your own.
Answer: The correct answer is Option a.
Explanation:
Combustion reaction is defined as the reaction in which a hydrocarbon reacts with oxygen gas to produce carbon dioxide gas and water molecule. It is considered as an exothermic reaction as energy is released during these reactions.
A hydrocarbon is a substance which contains a covalent bond between a hydrogen and carbon atoms. So, it is considered as a carbon-fuel compound.
The general equation for this reaction follows:
[tex]\text{hydrocarbon}+O_2(g)\rightarrow CO_2(g)+H_2O(g)+\text{heat}[/tex]
From the above equation, it is visible that elemental carbon is not produced.
Hence, the correct answer is Option a.
The atomic mass of hydrogen-1 is 1.008 and the atomic mass of helium-4 is 4.003. Find the difference in grams between 4 moles of hydrogen and one mole of helium.
A) 4.81 x10-26 g
B) 0.029 g
C) 1.7 x 1022 g
D) 0 grams
4 moles of hydrogen = 4 * 1.008 = 4.032 grams
1 mole of helium = 4.003 grams
Difference is 4.032 - 4.003
= 0.029 g
Answer:
The correct answer is option B.
Explanation:
The atomic mass of hydrogen-1 = 1.008 g/mol
The atomic mass of helium-4 = 4.003 g/mol
Mass of 4 mole of hydrogen = 4 × 1.008 g/mol = 4.032 g
Mass of 1 mole of helium = 1 × 4.003 g/mol = 4.003 g
Difference of between 4 moles of hydrogen and 1 moles of helium :
4.032 g - 4.003 g = 0.029 g
Which of the following best describes how further studies supported Joseph Proust's discovery about proportion of elements in water?
Max Planck discovered the Planck's constant.
John Dalton proposed that matter is made of tiny particles.
James Chadwick discovered neutral particles in the nucleus of the atom.
Niels Bohr determined that electrons inhabit distinct energy levels.
Answer is: John Dalton proposed that matter is made of tiny particles.
Proust's law or law of constant composition said that a given chemical compound always contains its component elements in fixed ratio and does not depend on method of preparation.
Water (H₂O) is made of two hydrogen atoms and one oxygen atom:
m(H) : m(O) = 2·1 : 16 = 1: 8.
Dalton said that matter is composed of atoms and atoms of different elements can join to form chemical compound.
What is the molarity of solution obtained when 5.71 g of sodium carbonate-10-water is dissolved in water and made up to 250.0 cm^3 solution? (Relative atomic masses: H = 1.0, C = 12.0, O = 16.0, Na = 23.0)
A. 0.08 mol dm^-3
B. 0.11 mol dm^-3
C. 0.16 mol dm^-3
D. 0.22 mol dm^-3
We have to know the molarity of solution obtained when 5.71 g of Na₂CO₃.10 H₂O is dissolved in water and made up to 250 cm³ solution.
The molarity of solution obtained when 5.71 g of sodium carbonate-10-water (Na₂CO₃.10 H₂O) is dissolved in water and made up to 250.0 cm^3 solutionis: (A) 0.08 mol dm⁻³
The molarit y of solution means the number of moles of solute present in one litre of solution. Here solute is Na₂CO₃.10 H₂O and solvent is water. Volume of solution is 250 cm³.
Molar mass of Na₂CO₃.10 H₂O is 286 grams which means mass of one mole of Na₂CO₃.10 H₂O is 286 grams.
5.71 grams of Na₂CO₃.10 H₂O is equal to [tex]\frac{5.71}{286}[/tex]= 0.0199 moles of Na₂CO₃.10 H₂O. So, 0.0199 moles of Na₂CO₃.10 H₂O present in 250 cm³ volume of solution.
Hence, number of moles of Na₂CO₃.10 H₂O present in one litre (equal to 1000 cm³) of solution is [tex]\frac{0.0199 X 1000}{250}[/tex] = 0.0796 moles. So, the molarity of the solution is 0.0796 mol/dm³ ≅ 0.08 mol/dm³
Ce procent de impuritati contine un minereu de siderit, daca din 1500kg minereu s-au obtinut 700kg fier 90% ?
FeCO3 ==> Fe + produsi minoritari.
m Fe impur= 700 kg
puritatea (p) = masa pura (mp)/ masa impura (mi) x 100
mp= p x mi / 100 sau mp = p/100 x mi => mp Fe = 90/100 x 700 = 630 kg Fe pur.
M FeCO3= 115.85 kg/kmol
115.85 kg FeCO3 .... 55.85 kg Fe
x kg FeCO3 ........630 kg Fe
x= 630 * 115.85 /55.85 = 1306.81 kg FeCO3 (mp in formula puritatii)
p=mp/mi x 100
mi FeCO3 = 1500 kg
mp FeCO3=1306.81 kg
p=1306.81 / 1500 x 100 = 87.12% puritate Siderit
Answer:
It has 12.84% of impurity
Explanation:
You obtained 700 kg 90% purity of Fe, so you have:
[tex]m_{Fe}=700 kg*0.9=630kg[/tex]
Those 630 kg are the mass of Fe contained in the original sample of 1500 kg in the from of Siderit.
The other substeances that aren't Siderit in the sample can be considered impurities.
Siderit: [tex]FeCO_3[/tex]
[tex]M_{siderit}=115.8 kg/kmol[/tex]
[tex]M_{Fe}=55.8 kg/kmol[/tex]
The mass of siderit:
[tex]m=630 kg Fe*\frac{115.8 kg Siderit}{55.8 kg Fe}=1307.4 kg Siderit[/tex]
[tex]m_{impurities}=1500kg-1307.4kg=192.6kg[/tex]
Percentaje of impurity:
[tex]P=\frac{192.6kg}{1500kg}*100=12.84[/tex]
Imagine that you're doing an experiment that requires you to smell the odor of a chemical solution in a beaker. Which procedure should always be followed? A. Wave the fumes toward your nose with your hand. B. You should never smell chemicals. C. Hold the beaker directly beneath your nose. D. Pour some of the solution on a paper towel and then sniff the towel.
The correct answer really is B.
If you are directed to break that rule then you better be in a high level chemistry class. When I taught things like that I insisted that students just wait until the chemical permeated the fume cabinet and even then I was always very nervous.
Sometimes you have to know when to ignore a bad direction. If you are working with chlorine, for example, you should be especially careful. That stuff was used in WWI as part of a chemical warfare technique. Many men suffered grotesque deaths by breathing it in, particularly if they were in trenches. Chlorine is heavier than air. It sinks to the lowest level.
What type of organic compound has the empirical formula CH2O and can serve as energy storage or the starting material for fats and amino acids?
Amine
Carbohydrate
Carbonyl
Ketone
*please explain your answer for brainliest
Answer:
Carbohydrates
Explanation:
Did the test and got it right
Which ocean basin has spread the greatest distancen during the last 2 million years
Atlantic
Hope I helped thanksss
Answer:
Atlantic has spread during this time
Explanation:
because South America , North America, and Australia separated from antarctica
A half-life is the time it takes an amount of substance to decay to one-half of its original amount. For example, the sample is one-half after the first half-life but one-quarter (i.e., one-half of one-half) after the second half-life. If the half life of uranium-235 is 700 million years, how long does it take for 10.0 grams to decay to 2.5 grams? Express your answer in billions of years.
Answer:
2.10 × 10⁹ yr
Step-by-step explanation:
The half-life of U-235 is the time it takes for half the U to decay.
After one half-life, half (50 %) of the original amount will remain.
After a second half-life, half of that amount (25 %) will remain, and so on.
We can construct a table as follows:
No. of Fraction Amount
half-lives t/(yr × 10⁶) remaining remaining/g
1 700 ½ 10.0
2 1400 ¼ 5.00
3 2100 ⅛ 2.50
4 2800 ¹/₁₆ 1.25
We see that 2100 × 10⁶ yr is three half-lives, and the amount of U-235 remaining is 2.50 g.
It takes 2.10× 10⁹ yr for the U-238 to decay to 2.50 g.
If the temperature at the surface of the ocean increases, how does the carbon dioxide dissolved in the sea water change? NEED IT ASAP PLEASE
The carbon dioxide released into the atmosphere decreases.
The carbon dioxide released into the atmosphere increases.
The carbon dioxide that precipitates out increases.
The carbon dioxide absorbed by the ocean increases.
Good morning!
The correct answer is D- The carbon dioxide absorbed by the ocean increases.
Have a great day!
-Sky
If the temperature at the surface of the ocean increases, the amount of carbon dioxide dissolved in the seawater will generally decrease.
When the water temperature rises, it reduces the solubility of carbon dioxide, causing it to be released from the water into the atmosphere.
This happens because warm water has a lower capacity to hold dissolved gases compared to cold water. As a result, as the surface temperature of the ocean increases, the ability of the seawater to retain carbon dioxide decreases, leading to the release of carbon dioxide into the atmosphere.
So, in response to the question, the correct answer is: The carbon dioxide released into the atmosphere increases.
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For the equation N2 + 3H2 → 2NH3 , if you start with 8 moles of nitrogen gas, how many moles of ammonia (NH3) will you have when the reaction is finished?
Answer:
16 mol
Step-by-step explanation:
N₂ + 3H₂ ⟶ 2NH₃
You want to convert moles of N₂ to moles of NH₃.
The molar ratio is 2 mol NH₃:1 mol N₂.
Moles of Br₂ = 8 × 2/1
Moles of Br₂ = 16 mol NH₃
You will have 16 mol NH₃ when the reaction is finished.
how can we relate the presence if color in an ionic solution as a characteristic lf electron configuration
How does the number of Carbon atoms per molecule affect the state at room temperature? Explain how this is similar or different from Viscosity.
Explanation:
There are three states of matter:
1) Solid: In this state, the particles lie closer to each other. there is a strong intermolecular force of attraction between the particles.
2) Liquid: In this state, the particles are at a certain distance to each other. There is an intermediate intermolecular force of attraction between the particles.
3) Gas: In this state, the particles are farther from each other. There is weaker intermolecular force of attraction between the particles.
As the number of carbon atoms in a molecule increases, the number of particles increases and the particles will come closer to each other. Hence, the state of matter will shift towards the solid state.
Viscosity is defined as the tendency to resist the particles to flow. As, the number of carbon atoms increases, the Vander-Walls forces increases, the particles are closer to each other and Hence, the viscosity will increase.
The weather in a particular location is influenced by _______. A. Atmospheric movements B. Plant life only C. Population D. Animal migration
Answer: atmospheric movements
Explanation: The weather in a particular location is influenced by atmospheric movements. The movements and interactions of warm and cold air masses. The type of interaction, the speed of the movements, and the area where the interaction occur can impact the type of weather produced.
A small 23 kilogram canoe is floating downriver at a speed of 3 m/s. What is the canoe's kinetic energy?
Kinetic energy is defined as the energy the object possess due to its motion. It is the work that accelerates a given body from rest to motion.
Given:
The mass of the canoe is 23 kilogram
The velocity of the canoe is 3 m/s
The kinetic energy can be given by the formula:
KE = [tex]\frac{1}{2}.m.v^{2}[/tex]
Substituting the given values in the kinetic energy equation
KE =[tex]\frac{1}{2}.(23kg).(3m/s)^{2}[/tex]
KE= 11.5 * 9 kg.m^2/s^2
k = 103.5 J
Therefore the kinetic energy of the canoe is 103.5 Joules.
Unless the gasoline tank of a car is refilled, the car will stop moving when it runs out of gas. What happened to the energy that was stored in the gasoline? a. It was eventually destroyed. b. It was converted into matter. c. It was transfered to the roadway. d. It was converted to mechanical energy and heat.
Answer: The correct answer is option d.
Explanation: Energy stored into gasoline is converted into another form of energy. This was very well explained on the basis of Law of conservation of energy. This law states that energy is conserved in the system which means that energy is converted from one form to another form.
The energy stored into gasoline is converted into mechanical energy which helps the car to move and some of the energy is lost in the form of heat.
Hence, the correct answer is Option d.
The energy stored in gasoline is converted into mechanical energy and heat when the car runs, adhering to the conservation of energy law. Option d is correct.
When a car runs out of gasoline, the energy stored in the gasoline is not destroyed or converted into matter, nor is it transferred to the roadway in a straightforward manner. Instead, the chemical potential energy stored within the molecular bonds of the gasoline is converted through combustion into mechanical energy and heat.
This process is known as an energy conversion and is a practical example of the law of conservation of energy, which states that energy cannot be created or destroyed but only changed from one form to another. In a car's engine, the combustion of gasoline causes the gaseous products to expand rapidly, pushing the pistons, thus generating mechanical energy that propels the car forward. Simultaneously, heat is produced, part of which is used to do work while the rest is dissipated into the environment.
The silver isotope with 60 neutrons. Enter the chemical symbol of the isotope.
Ag with a superscript of 107 and a subscript of 47
The silver (Ag) isotope with 60 neutrons has the chemical symbol: [tex] ^{107}_{47}X [/tex].
Any isotope can be represented as follows:
[tex] ^{A}_{Z}X [/tex]
Where:
Z: is the atomic number = number of protons
A: is the mass number
The atomic number of Silver is 47, so:
[tex] ^{A}_{47}X [/tex]
Now, we need to find the mass number:
[tex] A = Z + n [/tex]
Where:
n: is the number of neutrons = 60
[tex] A = Z + n = 47 + 60 = 107 [/tex]
Therefore, the chemical symbol of Ag-47 is [tex] ^{107}_{47}X [/tex].
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In the covalent bond formation process orbitals from each atom overlap and electrons are shared between each atom. You can visualize the 1s atomic orbital of one hydrogen atom overlapping with the 1s orbital of the other hydrogen atom to form an HâH covalent bond. Each hydrogen atom in the H2 molecule has the electron configuration analogous to that of the He atom. Similarly, when 2p orbitals of two fluorine atoms overlap they share one electron each. The total number of electrons in each F atom is nine. Each F atom shares one electron with the other F atom, and thus the total number of electrons in each F atom in the F2 molecule is 10. Therefore, each F atom in the F2 molecule has the electron configuration analogous to that of Ne.
The atomic orbitals of two iodine atoms combine to form the diatomic I2 molecule. Use the periodic table to determine the atomic orbitals that overlap to form the I2 molecule and the symbol of the noble gas that has the same electron configuration as the electron configuration of each bonded iodine atom.
For example, the 2p atomic orbitals of fluorine atoms overlap to form the F2 molecule. The noble gas that has the same electron configuration as that of each bonded fluorine atom is Ne. To enter the atomic orbitals that overlap and the corresponding noble gas, you would enter 2p,Ne.
Enter the symbol for the orbitals that overlap and the chemical symbol of the noble gas separated by a comma. For example, for H2 enter 1s, He.
In an I2 molecule, the 5p atomic orbitals of iodine atoms overlap to form the covalent bond. The I2 molecule has an electron configuration analogous to Xenon.
Explanation:In the diatomic I2 molecule, the 5p atomic orbitals of each iodine atom overlap to form the covalent bond. As per the electron configuration, an iodine atom has 7 electrons in its outermost 5p orbital. When these combine with another iodine atom, they share 1 electron each, for a total of 8 electrons. This corresponds to the electron configuration of the noble gas Xe (Xenon). Therefore, each iodine atom in an I2 molecule has an electron configuration analogous to Xenon.
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In I2 molecule formation, the 5p orbitals overlap. Each Iodine atom ends up with a total of 54 electrons. This configuration is analogous to the noble gas Xenon (Xe).
Explanation:In the formation of I2 molecule, the 5p atomic orbitals overlap, similar to the 2p orbitals that overlap in the formation of F2 molecule. When the atomic orbitals of the two iodine atoms overlap and combine, each iodine atom shares one electron with the other, which gives each iodine atom in the I2 molecule a total of 54 electrons. When we look at the periodic table, we can see that the noble gas Xenon (Xe) has 54 electrons. Therefore, each iodine atom in the I2 molecule has an electron configuration analogous to that of xenon (Xe).
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What do the lines around the finger of the doorknob represent?
The lines around the finger of the doorknob represent the electric force on the charged objects.