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What is the mass in grams of 2.50 mol of ammonia vapor, NH3?

User SvenTUM
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1 Answer

16 votes
16 votes

First find molar mass of NH_3


\\ \tt\longmapsto NH_3


\\ \tt\longmapsto 14g/mol+3(1g/mol)


\\ \tt\longmapsto 14+3


\\ \tt\longmapsto 17g/mol

  • No of moles=2.5moles


\\ \tt\longmapsto No\:of\;moles=(Given\:mass)/(Molar\;mass)


\\ \tt\longmapsto Given\:mass=No\:of\:moles* Molar\:mass


\\ \tt\longmapsto Given\:mass=2.5(17)


\\ \tt\longmapsto Given\:mass=42.5g

User Lionell
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