Question

A sample of propane, C3Hg, contains 14.4 moles of carbon atoms. How many total moles of atoms does

the sample contain?
Express the total number of moles of carbon and hydrogen numerically.

Answer 1

43.2 mol C

115 mol H

158 mol of atoms

Step-by-step explanation:

Step 1: Given data

Moles of C₃H₈: 14.4 mol

Step 2: Calculate the number of moles of C

The molar ratio of C₃H₈ to C is 1:3. The moles of C are 3/1 × 14.4 mol = 43.2 mol.

Step 3: Calculate the number of moles of H

The molar ratio of C₃H₈ to H is 1:(. The moles of H are 8/1 × 14.4 mol = 115 mol.

Step 4: Calculate the total number of moles of atoms

n = nC + nH = 43.2 mol + 115 mol = 158 mol