Mole conversions

Label the correct operations

a

b

c

d

What is molar mass?

• Molar mass is the volume occupied by one mole of a gas.
• The molar mass is the mass of one mole of a substance, expressed in grams per mole (g/mol).
• The molar mass is the weight of a single atom of an element.
• The molar mass is the temperature at which a substance changes state.

Tags

NGSS.HS-PS1-7

Organize these units into the right categories

Groups:

(a) Particles

,

(b) Mole

,

(c) Mass

• Ions

• Molecules

• Nuclei

• Atoms

• Mol

• Gram

• Formula Units

Label the correct operations needed to solve this problem:

How many particles are in 29.01 grams of oxygen?

Label the correct operations needed to solve this problem:

How many moles are in 0.0085 grams of nitrogen?

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How many grams are in 1.98 X 10²³ particles of chlorine?

How is the molar mass of a compound calculated?

• By determining the temperature at which the compound changes state.

• By adding the atomic masses of all the atoms in a molecule of the compound.

• By measuring the volume of the compound at standard temperature and pressure.

• By weighing a single atom of the compound.

What is the significance of Avogadro's number in relation to molar mass?

• It is the temperature at which a substance changes state.

• It is the mass of one mole of a substance.

• It is used to calculate the volume of a gas at standard temperature and pressure.

• It represents the number of atoms or molecules in one mole of a substance.

How many grams are in 2.50 moles of sodium chloride?

• 146.10 grams
• 100.50 grams
• 74.99 grams
• 58.44 grams

Tags

NGSS.HS-PS1-7

What is the molar mass of H₂O₂ used in the calculations?

• 34.02 grams

• 18.02 grams

• 44.01 grams

• 28.02 grams