Grams to Moles and Moles to Grams

176 grams of carbon dioxide, CO₂, is equal to how many moles of the substance.

• about 44 moles

• about 4 moles

• about 1 mole

When converting a moles to mass, what unit must be in the denominator of the conversion factor?

• grams

• moles

• grams/mole

Convert 13.25 grams of magnesium nitrate, Mg(NO₃)₂, to moles of the substance.

• 0.100 mole

• 0.0986 mole

• 0.0893 mole

If you have grams on top, what do you need on the bottom of the conversion factor to be?

• atoms

• particles

• grams

• moles

If you have moles on top, what do you need on the bottom of the conversion factor to be?

• atoms

• particles

• grams

• moles

How many molecules are in 27.5 grams of NaOH

• 41.4 molecules

• 4.14 x 10²³ molecules

• 4.14 x 10²⁵ molecules

• 1.83 x 10^-21 molecules

How many moles are in 19.82 g Mg?

• 1.23 mol Mg

• 481.70 mol Mg

• 1.00 mol Mg

• 0.82 mol Mg

How many grams are in 1.2 x 10²⁴ atoms of C?

• 29.34 grams

• 23.94 grams

• 6.02 grams

• 1.21 grams

Calculate the number of atoms in 0.0340 g Zn.

• 5.200 x 10^-4 atoms Zn

• 3.130 x 10²³ atoms Zn

• 3.130 x 10²⁰ atoms Zn

• 1 atom Zn

Tags

NGSS.HS-PS1-7

Convert 50 grams of water (H2O) to moles.

• 2.78 moles

• 1.39 moles

• 0.89 moles

• 0.56 moles