Gram/Moles/Atoms Calculations

How many moles is 29 grams of Silver (Ag)?

• 0.27 moles

• 0.55 moles

• 29 moles

• 0.75 moles

What is the molar mass of H₂O?

• 18.02 g/mol

• 16.00 g/mol

• 22.01 g/mol

• 12.12 g/mol

How many atoms are in 5 moles of Iron (Fe)?

• 3.011*10²³ atoms

• 2.99*10²³ atoms

• 500 atoms

• 3.5*10²³ atoms

How many grams are in 15 moles of H₂O?

• 175 g

• 265 g

• 270.3 g

• 310.05 g

How many moles of Uranium are in 5.034*10²³ atoms?

• 0.68 moles

• 1.3 moles

• 0.84 moles

• 0.98 moles

Write this in scientific notation: 0.00565

• 5.65*10³

• 5.65*10^-3

• 5.65*10^-6

• 6.5*10^-4

How many significant figures in 20,000?

• 1

• 5

• 3

• 6

How many significant figures are in 0.003450?

• 7

• 4

• 3

• 5