Answer to Question #151712 in Chemistry for Jenna

Question

calculate the mass of 2.4 moles of ammonia, NH3
answer: __grams

A student performing this reaction makes 8.5 grams of ammonia, NH3. How many moles of ammonia did she make?
answer:__moles

Answer 1

Solution:

The molar mass of NH₃ is 17.031 g/mol.

Hence,

a) Mole to Grams conversion:

2.4 mol NH₃ × (17.031 g NH₃ / 1 mol NH₃) = 40.8744 g NH₃ = 40.87 g NH₃

Answer (a): 40.87 grams of NH₃.

b) Grams to Mole conversion:

8.5 grams NH₃ × (1 mol NH₃ / 17.031 g NH₃) = 0.499 mol NH₃ = 0.5 mol NH₃

Answer (b): 0.5 mol of NH₃.