Moles

Determine the mass of
1.4 x 10²³ atoms of Chromium.

• 7.3 x 10²⁴ g
• 0.23 g
• 4.4 x 10⁴⁸g
• 12 g

Determine the amount of moles in 12.15 g of magnesium.

• 1.779 x 10²⁶ moles

• 295.4 moles

• 0.4998 moles

• 2.018 x 10^-23 moles

What are the units for molar mass?

• grams
• amu
• grams/mole
• liters

What is the mass in grams of 5.90 mol C₈H_18?

• .0512 g
• 19.4 g
• 673 g
• 389 g

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

• A
• B
• C
• D

Which conversion factor should be used to solve the following, "How many moles in 28 grams of CO₂?"

• 1 mol = 22.4 L 
• 1 mol = 44.01 g
• 1 mol = 6.02x10²³ atoms
• more than one

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

• A
• B
• C
• D

How many grams are in 3.01 x 10²³ atoms of chlorine?

• 6.43 x 10⁴⁸ g Cl
• 17.8 g Cl
• 0.0141 g Cl
• 0.500 g Cl

Determine the mass of
1.4 x 10²³ atoms of Chromium.

• 7.3 x 10²⁴ g
• 0.23 g
• 4.4 x 10⁴⁸g
• 12 g

Determine the amount of moles in 1.50 x 10²³ atoms of fluorine.

• 9.03 x 10⁴⁶ moles
• 0.249 moles
• 4.73 moles
• 0.0131 moles