Question

Calculate the formula unit masses of ZnO, Na2O, K2CO3

, Na2SO4 given

atomic masses of Zn = 65u, Na = 23u, K = 39 u, C =3 12 u, S=32u and O =

16 u
? ​

Answer 1

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

=(65+16)u =81u

Formula unit mass of Na2O=(2×23)+16

=62u

Formula unit mass of K2CO3

=(2×39)+12+(3×16)

=138u

its the answer.....

Answer 2

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