Question

A solution composed of 30.6g NH3 in 81.3g of H20. Calculate the mole fraction for NH3 and H20

Answer 1

Answer: NH3 = 9/5    H20= 9/2

Explanation:

Mr of NH3 = 17g/mol

Mr of H20 = 18g/mol

NH3 = 30.6g divide by 17g/mol = 1.8 mol

                                                      = 9/5

H20 = 81.3g divide by 18g/mol = 4.5 mol  

                                                     = 9/2

Answer 2

Answer:

0.286 moles

Explanation:

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