Question

calculate molar mass of O2, NH3,CH4,Na2O,k2Co3,ZnO
(atomic masses are ) O=16u
N=14u , H=1u, C=12u , Na=23u
K=39u, Zn=65u​

Answer 1

Answer:

138u

Explanation:

ANSWER

Formula unit mass of ZnO=(Atomic mass of Zn)+(Atomic mass of O)

=(65+16)u =81u

Formula unit mass of Na

2

O=(2×23)+16

=62u

Formula unit mass of K

2

CO

3

=(2×39)+12+(3×16)

=138u

Answer 2

Answer:

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Explanation:

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