Answers

2015-10-14T21:55:10+05:30
mass of 0.5 mole of nitrogen gas, 
mass of nitrogen molecule = 28 grams. ( 14*2=28 )
mass of 1 mole = 28 grams.
mass of 0.5 moles = 0.5*28
                            = 14 grams.
      i hope that this will help u.................
2 3 2
Mass of one miteigen moecule is not 28 GMS..Its 28 a.m.u.
Nitrogen ***
2015-10-15T14:22:50+05:30
Mass of 1 mole of Nitrogen gas(N2) = 28g
mass of 0.5 mole of Nitrogen gas = 0.5*28 = 14g
1 5 1