1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Leya [2.2K]
2 years ago
6

Which of the following samples contains the greatest number of atoms?

Chemistry
1 answer:
mart [117]2 years ago
7 0

Answer:

C. 11 moles of N2O

Explanation:

A. CO2 exists as a molecular compound. The number of atoms present = 1 atom of Carbon and 2 atoms oxygen = 3 atoms * 9 = 18 atoms

B. Xe exists as an atom. Number of atoms present = 10 * 1 atom = 10 atoms

C. N20 contains 3 atoms; 2 atoms of Nitrogen and 1 atom of oxygen.

Number of atoms present = 3 * 11 = 33 atoms

D. CO contains 2 atoms, 1 each of carbon and oxygen.

Number of atoms present = 12 * 2 = 24 atoms

You might be interested in
HELP ME PLEASE I NEED THE ANDEER NOW
AysviL [449]
The answer is 0.430 .
8 0
2 years ago
Which of the following are true statements about equilibrium systems? For the following reaction at equilibrium: CaCO3(s) ⇌ CaO(
Grace [21]

Answer:

The first, third and fourth statements are correct.

Explanation:

1) For the following reaction at equilibrium: CaCO3(s) ⇌ CaO(s) + CO2(g) adding more CaCO3 will shift the equilibrium to the right.

⇒ Le Chatellier says As the CaCO3 concentration is increased, the system will attempt to undo that concentration change by shifting the balance to the right. <u>This statement is true.</u>

<u />

2) For the following reaction at equilibrium: CaCO3(s)⇌ CaO(s) + CO2(g) increasing the total pressure by adding Ar(g) will shift the equilibrium to the right.

⇒ Le chatellier says that if we increase the pressure, the equilibrium will shift to the side with the least number of particles.

Since the molar densities of CaO and CaCO3 are constant, they don't appear in the equilibrium expression. This is why only changes to the pressure (concentration) of CO2 affect the position of the equilibrium.

If the pressure in the container is increased by adding an inert or non-reacting gas, nothing happens to the amounts of CO2, CaO or CaCO3. The added gas won't affect the partial pressure of CO2. <u>This statement is false. </u>

3)For the following reaction at equilibrium: 2 H2(g) + O2(g) ⇌ 2 H2O(g) the equilibrium will shift to the left if the volume is doubled.

⇒ Le Chatellier says if we increase the pressure, the equilibrium will shift to the side with the most particles.

In this case we have 2 moles of H2 and 1 mole of O2 on the left side and 2 mole of H2O on the right side. This means on the left side are more particles. So the equilibrium will shift to the left, so <u>this statement is true.</u>

4) For the following reaction at equilibrium: H2(g) + F2(g) ⇌ 2HF(g) removing H2 will increase the amount of F2 present once equilibrium is reestablished. Increasing the temperature of an endothermic reaction shifts the equilibrium position to the right.

⇒ Le chatellier says if H2 will be removed (this means the left side will get less particles) so the equilibrium will shift to the left, to increase the amount of F2.

⇒Le chatelier says if we increase the temperature of an exotherm reaction , there will be less energy released. The equilibrium will shift to the side of the reactants (the left side).

If we increase the temperature of an endotherm reaction, the equilibrium will shift to the side of the products (the right side). <u>This statement is true.</u>

4 0
3 years ago
Sodium atoms differ from sodium ions in that sodium atom contains
Olenka [21]

Explanation:

sodium atom is neutral while sodium ion is a charged specie with a charge of +1

3 0
3 years ago
The formula for the table salt is NaCl. Is table salt ionic or covalent? Explain.
mel-nik [20]

Answer:

ionic

it is a mixture of a nonmetal and a metal which is what makes ionic compounds

covalent is a nonmetal and nonmetal

Explanation:

6 0
2 years ago
Anyone know the answer to number 1?
Andrew [12]
The rate at which the substance dissolves in water.
5 0
3 years ago
Other questions:
  • Different isotopes of a particular element contain the same number of
    13·1 answer
  • What is Arsenic cost per unit?
    10·1 answer
  • How does your body obtain energy from the carbohydrates you eat?
    15·1 answer
  • Plz help ASAP. thx for you answers​ ALGEBRA 2 sorry
    6·1 answer
  • Question 1: Which of the following statement is false about conjugated systems?
    7·1 answer
  • The distance between an object and a reference point is the object's __________. displacement neutral point position velocity
    15·1 answer
  • Provide the electronic structure diagram of propene showing all molecular orbitals​
    5·1 answer
  • What is an ion atom?
    9·1 answer
  • The term used to describe the Moon phases as the light spreads across the surface of the moon or grows.
    13·1 answer
  • I have to covert 4.4×10^4 Pa in to atm
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!