Question

calculate the molecular mass of the following
Na2So4.10H2o
(NH4)2co3
(NH2)2CO
MG3N2​

Answer 1

Na2SO4 . 10H2O

Na = 23g , S = 32g , O = 16g , H = 1g

Na2 ==> 23×2 = 46g

SO4 ==> 32 + 16×4 = 96g

10H2O ==> 10×2×1 + 10×16 ==> 180g

Molecular weight = 46 + 96 + 180

==> 322g

(NH4)2CO3

N = 14g , H = 1g , C = 12g , O = 16g

(NH4)2 ==> (14 + 4×1) × 2 = 36g

CO3 ==> 12 + 16×3 ==> 12 + 48 = 60g

Molecular weight = 36 + 60

==> 96g

(NH2)2CO

N = 14g , H = 1g , C = 12g , O = 16g

(NH2)2 ==> ( 14 + 2×1) × 2 ==> 32g

CO ==> 12 + 16 ==> 28g

Molecular weight = 32 + 28

==> 60g

Mg3N2

Mg = 24g , N = 14g

Mg3 ==> 3 × 24 ==> 72g

N2 ==> 14 × 2 ==> 28g

Molecular weight = 72 + 28

==> 100g

Answer 2

Answer:

here is your answer my dear friend