Answer:
(a) Molar
mass of atomic mass of N+3 x
atomic mass of H
= 14 + 3 x 1=
17 g = Mass if 1 mole of
Mass of 0.5 mole of
(b) Molar
mass of molecules = 4 x atomic mass
of P = 4 x 31 = 124 g
Number of
particle
Avogadro's number
(approx).
(c) Molar mass of atomic mass of K + atomic mass
of S + 4 x atomic mass of O = 2 x 39 + 32 + 4 x 16 = 78 + 32 + 64 = 174 g Number
of moles
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