Discover the Number of Moles in Your Sample!

27 Jun 2021

How many moles of ammonia are there in a 346 g sample of pure NH₃?

Given: Molar mass of NH₃ = 17.031 g/mol

The number of moles of ammonia in a 346 g sample of pure NH₃ is 20.35 moles.

Number of moles is defined as the ratio of given mass over molar mass.

Number of moles = Given mass / Molar mass

Given: Mass of NH₃ = 346 g

To find: Number of moles?

We know that the molar mass of NH₃ is 17.031 g/mol.

By using the formula for number of moles and substituting the values, we get:

Number of moles = Given mass / Molar mass

Number of moles = 346 / 17.031

Number of moles = 20.35 moles

Therefore, the number of moles of ammonia in a 346 g sample of pure NH₃ is 20.35 moles.