Question

how many moles are present in 90 grams of ammonia​

Answer 1

Answer:

Molecular mass of NH3=14+(3×1)

=17g

No. of moles=Given mass/Molecular mass

=90/17

=5.30 moles

Answer 2

Explanation:

Given weight = 90 g

given molecule = NH3

molecular weight = 17 g

number of moles

= given wieght/molecular weight

= 90/17

= 5.29 moles