Mole Test Review 1st

Determine the molar mass for CCl₄

• 158.8 g/mol
• 47.54 g/mol
• 189.35 g/mol
• 82.9 g/mol

What is the percent composition of oxygen in water?

• 1.125%
• 112.5%
• 0.889%
• 88.9%

If the empirical formula for a sugar is CH₂O, what is a possible molecular formula for that sugar?

• C₆H₁₂O₆
• C₂H₂O₂
• CH₄O
• none of the above

What is the molar mass of sodium?

• 11
• 22.990
• 45.98
• 3

What are the units for molar mass?

• grams
• amu
• grams/mole
• liters

Tags

NGSS.HS-PS1-7

What is the mass of one mole of aluminum?

• 26.982 g
• 13 g
• 53.985 g
• 14 g

What is the molar mass of table salt (NaCl)?

• 116.886 g/mol
• 35.453 g/mol
• 22.990 g/mol
• 58.443 g/mol

The empirical formula for a compound that contains 36 g C, 8.0 g O, and 6.0 g H is

• C₄H₆O
• C₆H₁₂O
• C₉H₂O₄
• C₆H₁₂O₆

Tags

NGSS.HS-PS1-7

How many moles are in 4.5x10²⁴ particles?

• 0.747 particles
• 0.747 mol
• 2.71x10⁴⁷ mol
• 2.71x10⁴⁷ particles

Tags

NGSS.HS-PS1-7

What is the molar mass of Mg₃N₂?

• 191.6 g/mol
• 76.64 g/mol
• 38.32 g/mol
• 100.95 g/mol