What is the mass of a 0.42 mole sample of ammonia (NH3)? 0.429 17 g 4.2...

Question

Question

What is the mass of a 0.42 mole sample of ammonia (NH3)? 0.429 17 g 4.2 9 2.5 x 102 g 7.19

Answer 1

Answer #1

Molar mass of NH3 is 17 g/ mol

Given number of moles of NH3,n= 0.42 moles

We know number of moles,n = mass/ molar mass

So mass of NH3,m = number of moles * molar mass

m= 0.42 mol * 17 g/ mol

= 7.1 g

Answer 2

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