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

B: 6.02 × 1023 molecules

Question 2

Potassium (K): g/mol

Revolt · Accepted Answer

Part 2: 190.23; Part 3: 54.94

Question 3

Ammonia (NH3): g/mol

Revolt · Accepted Answer

⇒ 58.33: 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

C: 3.36 × 1024 atoms

Question 5

Osmium (Os): g/mol

Revolt · Accepted Answer

190.23

Question 6

Magnesium hydroxide (Mg(OH)2): g/mol

Revolt · Accepted Answer

58.32

Question 7

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

A: 9.01 g

Question 8

Manganese (Mn): g/mol

Revolt · Accepted Answer

54.94

Question 9

Iron(III) oxide (Fe2O3): g/mol

Revolt · Accepted Answer

159.70

Question 10

8.32 × 1020 formula units CaBr2

Revolt · Accepted Answer

A: 0.276 g

Dimensional Analysis Answers