Dimensional Analysis

Question 1

A gas cylinder contains exactly 1 mole of oxygen gas (O2). How many molecules of oxygen are in the cylinder?

Revolt · Accepted Answer

6.02 × 1023 molecules

Question 2

1.93 × 1026 molecules XeF6

Revolt · Accepted Answer

78,600 g

Question 3

Potassium (K): g/mol

Revolt · Accepted Answer

Part 2: 190.23; Part 3: 54.94

Question 4

Ammonia (NH3): g/mol

Revolt · Accepted Answer

⇒ 58.33: 58.32; Part 3: 159.70

Question 5

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 6

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 7

8.32 × 1020 formula units CaBr2

Revolt · Accepted Answer

0.276 g

Dimensional Analysis Answers