Question

Calculate the molecular mass of the following and the percentage of the underlined one: (Atomic Mass: Cu-64, S-32, H-1, 0-16, C-12, Na-23, Si-28, N=14)

a. CuSO4.5H₂O b. C6H12O6 c. Na₂SiO₂ d. HNO​

Answer 1

Answer:

Molar Mass :-

a. CuSO4.5H₂O = 64+32+4(16)

= 160

b. C6H12O6 = 6(12)+12(1)+6(16)

= 72+12+64

= 180

c. Na₂SiO₂ = 2(23)+28+2(16)

= 46+28+32

= 106

d. HNO = 1+14+16

= 31