Mole Unit Review

How many grams are in 5.6 moles of sodium bromide?

• 36.8 g/mol
• 18.4 g
• 576 g/mol
• 576 g

How many atoms are in 0.500 mole of aluminum?

• 500 Al atoms
• 6.02 * 10²³ Al atoms
• 3.01 * 10²³ Al atoms
• 5000 Al atoms

How many moles of sulfur are in 1.8 * 10²⁴ sulfur atoms?

• 3.0 mole sulfur atoms
• 1.0 mole of sulfur atoms
• 1.1 * 10⁴⁸ mole sulfur atoms
• 2.0 mole sulfur atoms

How many moles of NH₃ are in 7.9 *10²⁴ NH₃ molecules?

• 13 moles NH₃ molecules
• 1.3 moles NH₃ molecules
• 1.3 * 10²⁴ NH₃ molecules
• 2.0 moles NH₃ molecules

How many atoms are in 3.5 moles of copper?

• 3500 Cu atoms
• 6.02 *10²³ Cu atoms
• 2.1 * 10²⁴ Cu atoms
• 2.2 *10²³ Cu atoms

What is the molar mass of calcium chloride? (ROUNDED ANSWER)

• 75.5 g/mol
• 111 g/mol
• 116 g/mol
• 151 g/mol

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

• 237.2 g/mol
• 283.2 g/mol
• 269.2 g/mol
• 331.2 g/mol

How many moles are in 25 grams of HF?

• 0.8 g
• 1.25 g
• 1.25 mol
• 0.8 mol

What is the mass of 5 moles of iron(III) oxide?

• 800 mol
• 800 g
• 268 g
• 358 g

What is the mass of 10 moles of carbon dioxide? (ROUNDED ANSWER)

• 280 g
• 360 g
• 440 g
• 560 g