Question

How many molecules are there in 2.3 grams of `NH_4SO_2`?

Answer 1

First calculate the molar mass of NH4SO2. The molar mass can determine the number of moles. Then use Avogodro's number to calculate the number of molecules.

Explanation:

Please see this video. It walks you through step by step how to do a similar problem.

Key Steps:

Step 1. Calculate molar mass of your compound
Step 2. Divide 2.3 grams by the molar mass of NH4SO2, this gives us moles
Step 3. Multiply by Avogodro's number (6.02x10^23) this gives you molecules.