Formula Mass, Moles, and Molar Mass

Units of Molar Mass are....

• g/mol

• mol/g

• g

• mol

Tags

NGSS.HS-PS1-7

What is the mass of one mole of aluminum?

• 27 g
• 13 g
• 54 g
• 14 g

What is the formula mass of sodium chloride?

• 22.99 g/mol

• 35.45 amu

• 58.44 g/mol

• 58.44 amu

The number of particles present in one mole of H₂O molecule is

• 18.02 g/mol.

• 18.02 amu.

• 6.02 x 10²³ molecules.

• 18.02 g.

How many water molecules are in 5.2 moles of water?

• 6.0 x 10²³ molecules

• 5.2 molecules

• 3.1 x 10²⁴ molecules

• 8.6 x 10^-24 molecules

Tags

NGSS.HS-PS1-7

What is the definition of molar mass?

• number of grams in one mole of a substance

• whole number ratio that is a multiple of a chemical formula

• simplest, whole number ratio of a chemical formula

• 6.02 x 10^23 particles per one mole of a substance

Tags

NGSS.HS-PS1-7

To convert between mass and moles of a substance, use ___________________ as a conversion factor.

• molar mass

• Avogadro's number

• both molar mass and Avogadro's number

• atomic number

Tags

NGSS.HS-PS1-7

Calculate the molar mass of KOH.

• 28 g/mol

• 56 g/mol

• 84 g/mol

• 112 g/mol

What is the molar mass of Cl₂?

• 17 g/mol

• 35.5 g/mo;

• 71.0 g/mol

• 89 g/mol

How many moles are in 22 g of argon? 

• 880 moles
• 0.55 moles
• 1.81 moles
• 5 moles