Multiple Step Mole Conversions

How many moles are in 19.82 g Mg? 

• 1.226mol Mg

• 481.7mol Mg

• 1.000mol Mg

•  0.8156 mol Mg

How many moles are in 10 g of salt (NaCl)?

• 0.171 mol

• 0.086 mol

• 3.42 mol

• 58.45 mol

A can of Coke has 39g of sugar. The formula for table sugar is C₁₂H₂₂O₁₁. How many moles of sugar is in a can of Coke?

• 0.414 mol

• 0.314 mol

• 0.214 mol

• 0.114 mol

Tags

NGSS.HS-PS1-7

How many moles are equal to 89.23 g of calcium oxide, CaO?

• 1.59 mol

• 2.03 mol

• 1.77 mol

• 3.21 mol

How many molecules are in 2.5 mol of NaCl?

• 1.50 x10²⁴ molecules

• 1.50 molecules

• 4.15 molecules

• 1.51 x10²⁴ molecules

Tags

NGSS.HS-PS1-7

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

How many grams of NH₃ would result in 8 moles of NH_3. What does the the number 8 do to the molar mass of the compound?

• The number 8 is added to the molar mass to give 25 g/mol.

• The number 8 multiplies the molar mass by 8 to give 136 g/mol.

• The number 8 divides the molar mass by 8 to give 2.13 g/mol.

• The number 8 does not change the molar mass of the compound.

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 moles are in 50 g of water (H2O)?

• A) 2.78 mol

• B) 1.39 mol

• C) 0.89 mol

• D) 0.56 mol