Question

What is the mass of two moles of propane gas, C3H8?

Answer 1

Propane gas, C3H8

First, we need the molar mass of propane to solve this.

The molar mass of propane = 44.1 g/mol

(use the periodic table)

Procedure:

1 mol of Propane = 44.1 g

We want to know the mass of 2 moles of it, so we proceed like this:

1 mol C3H8 ---------- 44.1 g C3H8

2 moles C3H8---------- x

x = 88.2 g C3H8

Answer: the mas of C3H8 = 88.2 g