Question

calculate the mass of 0.5 mole of N2 gas . ( atmic mass of N=14u )

Answer 1

Mass of N = 14g
Mass of N2 = 2(14) = 28g

Mass of 1 mole of N2 = 28g 
Hence mass of 0.5 mole = 28 x 1/2 = 14g

Answer 2

Answer:

n = 0.5

molar mass of N 2 = 2*14

M=28g

m=?

n= m/M

m= n*M

= 0.5*28

m=14 g.

MARK BRAINALIST