Molar Mass and % Comp REVIEW

What is the molar mass of sodium?

• 11

• 22.990

• 45.98

• 32.066

What are the units for molar mass?

• grams
• amu
• grams/mole
• liters

Fluorine is diatomic.  What is the molar mass of fluorine gas?

• 18.998 g/mol
• 37.996 g/mol
• 9 g/mol
• 18 g/mol

What is the molar mass of NaOH?

• 39.997 g/mol
• 38.989 g/mol
• 23.998 g/mol
• 57.004 g/mol

What is the molar mass of AgF

• 514.9g/mol

• 99.7g/mol

• 126.866 g/mol

• 198.8g/mol

What is the molar mass of Ca(OH)₂

• 74.092 g/mol

• 210.0g/mol

• 98.9g/mol

• 219.9g/mol

What is the molar mass of lead (II) sulfate?

• 303.3 g/mol

• 294.7g/mol

• 163.8g/mol

• 372g/mol

Find the percentage composition of Mg in Magnesium phosphate.

• 27.74% Mg

• 23.57% Mg

• 48.68% Mg

• 13.45% Mg

Determine the molar mass for carbon tetrachoride

• 153.823 g/mol
• 118.37 g/mol
• 189.35 g/mol
• 47.464  g/mol

What is the percent composition by mass of sulfur in the compound MgSO₄ (molar mass = 120 g/mol)?

• 20%

• 27%

• 46%

• 53%