Asked by Katherine
I'm having a problem with a simple conversion question!
"What is the molarity of 30.0 g of NH3 in 70.0 g of water? The desnity of the solution is 0.982 g/mL, and the molecular weight of ammonia is 17.0 g/mol"
1.76 mol NH3
Vsolution = mass/density
V= 70.0g/982 g/L = 71.28 L
M = 1.76/71.28 = 0.0246
the answer key says its 17.3 but i keep getting it wrong. where am i messing up in my conversions?!
"What is the molarity of 30.0 g of NH3 in 70.0 g of water? The desnity of the solution is 0.982 g/mL, and the molecular weight of ammonia is 17.0 g/mol"
1.76 mol NH3
Vsolution = mass/density
V= 70.0g/982 g/L = 71.28 L
M = 1.76/71.28 = 0.0246
the answer key says its 17.3 but i keep getting it wrong. where am i messing up in my conversions?!
Answers
Answered by
DrBob222
30 g NH3 is in 100 g soln, not 70.
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