Molar Masses

Question 1

Potassium (K): g/mol

Revolt · Accepted Answer

Part 1: 39.10; Part 2: 190.23; Part 3: 54.94

Question 2

1.93 × 1026 molecules XeF6

Revolt · Accepted Answer

78,600 g

Question 3

Ammonia (NH3): g/mol

Revolt · Accepted Answer

Part 1: 17.04; Part 2: 58.32; Part 3: 159.70

Question 4

Use the periodic table to determine how many atoms of phosphorus (P) are in a sample that has a mass of 172.90 g.

Revolt · Accepted Answer

3.36 × 1024 atoms

Question 5

Select the correct mass for each of the samples described below.3.01 × 1023 molecules H2O 8.32 × 1020 formula units CaBr2 1.93 × 1026 molecules XeF6

Revolt · Accepted Answer

9.01 g; Selection 1: 9.01 g; Selection 2: 0.276 g; Selection 3: 78,600 g

Question 6

8.32 × 1020 formula units CaBr2

Revolt · Accepted Answer

0.276 g

Molar Masses Answers