Answer:
0.88mole
Explanation:
The number of mole present in 15g of NH3 can be obtained as follow:
Molar Mass of NH3 = 14 + (3x1) = 14 + 3 = 17g/mol
Mass of NH3 = 15g
Number of mole of NH3 =?
Number of mole = Mass /Molar Mass
Number of mole of NH3 = 15/17
Number of mole of NH3 = 0.88mole
