Section 10-1 and 10-2 Review Questions

Calculate the mass of 0.405 mol of H₂O

• 7.29 g

• 8.19 g

• 9.45 g

• 10.35 g

Tags

NGSS.HS-PS1-7

Calculate the mass of 2.33 mol of KMnO₄

• 366.44 g

• 368.44 g

• 370.44 g

• 372.44 g

Calculate the number of moles in 102 g of NaCl.

• 1.75 moles

• 2.00 moles

• 1.50 moles

• 2.25 moles

Tags

NGSS.HS-PS1-7

Calculate the number of moles in 756 g of PCl₅.

• 2.90 moles

• 3.64 moles

• 4.50 moles

• 5.80 moles

What is the volume of 3.90 mol of O₂ at STP?

• 87.36 L

• 22.4 L

• 44.8 L

• 100.8 L

Calculate the volume of 1.50 mol of He at STP.

• 22.4 L

• 33.6 L

• 44.8 L

• 11.2 L

The densities of gases A and B are 1.25 g/L and 1.34 g/L, respectively. Calculate their molar masses in order to identify them as NO and N₂.

• Gas A is NO and Gas B is N₂

• Gas A is N₂ and Gas B is NO

• Both gases are NO

• Both gases are N₂

Calculate the density of Cl₂ at STP.

• 1.56 g/L

• 2.95 g/L

• 3.17 g/L

• 3.21 g/L

Calculate the density of Ar at STP.

• 1.78 g/L

• 1.29 g/L

• 0.89 g/L

• 2.16 g/L

Calculate the molar mass of Mg(OH)_2.

• 42.33 g/mol

• 41.32 g/mol

• 82.64 g/mol

• 58.33 g/mol