Question

what is the molecular mass of following ethene,sulphur molecules ,hydrochloric acid and nitric acid​

Answer 1

Answer:

ehene is 6666

HNo3 is 4.9

1. s is 57.92
2. HCl is 1.008

Answer 2

Explanation:

(a) Molar mass of C2H2 = 2 x atomic mass of C + 2 x atomic mass of H

=(2 x 12 + 2 x 1)u = (24 + 2)u =26u

(b) Molar mass of S8 = 8 x atomic mass of S

= (8 x 32)u = 256u

(c) Molar mass of HCl = atomic mass of H + atomic mass of Cl

= (1 + 35.5)u = 36.5u

(d) Molar mass of HNO3 = atomic mass of H + atomic mass of N + 3 x atomic mass of O

= (1 + 14 + 3 x 16)u = (1 +14 +48)u = 63u