Review the mole

Calculate the number of atoms in 0.0340 g Zn. (mm Zn = 65.409 g)

• 5.20 x 10^-4 atoms Zn

• 3.13 x 10²³ atoms Zn

• 3.13 x 10²⁰ atoms Zn

• 1 atom Zn

How many moles are in 19.82 g Mg? (mm Mg = 24.305 g)

• 1.23 mol Mg

• 481.70 mol Mg

• 1.00 mol Mg

• 0.82 mol Mg

Determine the molar mass for carbon tetrachloride (CCl₄).

• 153.81 g/mol

• 118.37 g/mol

• 189.35 g/mol

• 47.46 g/mol

How many grams are in 1.2 x 10²⁴ atoms of C? (mm C = 12.011g)

• 29.34 grams

• 23.94 grams

• 6.02 grams

• 1.21 grams

What is the percent composition by mass of sulfur (S) in the compound MgSO₄? (mm MgSO₄ = 120.366 g/mm S = 32.06 g)

• 20.22%

• 19.85%

• 26.64%

• 28.64%

Determine the mass in grams found in 3.5 moles of calcium. (mm Ca = 40.078 g)

• 21.07 g

• 0.58 g

• 140.28 g

• 114.51 g

Which of the following dimensional analysis setups will correctly convert 27.76g of Li to atoms of Li?

• A
• B
• C
• D

How many moles are in 16.94g of water?

• 16.94 mol H₂O
• 0.9401 mol H₂O
• 305.3 mol H₂O
• 1.063 mol H₂O

How many moles are in 9.8 grams of calcium? 

• 0.20 moles
• 4.1 moles
• 1.0 mole
• 392 moles

Which of the following dimensional analysis setups will correctly convert 2.50 moles of sodium to grams of sodium?

• A
• B
• C
• D