Question

calculate the mass of 5 mole of ammonia

Answer 1

Nov '16(i) what is the mass of 0.5 mole of NH3? Given atomic mass of N = 14 u, atomic mass of H =1 u.(ii) Calculate the number of particles in 31 g of P4 molecules. (Atomic mass of P =31u)(iii) Find the number of moles in 87 g of K2S04.(Atomic masses of K = 39 u, S = 32 u andO= 16 u)S

Answer 2

formula is No. of moles=given mass / Molar mass
we have to find out given mass
So given
Formula of ammonia=NH3=14+1*3=17
molar mass=17u
mole=5
so formula is
no. of moles * molar mass=given mass
5*17= 85g