Question

Q8. (a) Calculate the molar mass of C 2 H 5 OH with appropriate unit. (01 Marks)
(Atomic mass of C= 12, H= 1, O= 16)
(b) How many valence electrons Helium has? (01 ​

Answer 1

Answer:

Molecular mass of a compound is the sum of atomic masses of each element present in the molecule.  

Molecular mass = atomic mass of Cu + atomic mass of S + (9 × atomic mass of O) + (10 × atomic mass of H) =63.5+32+9×16+10×1=249.5 gm/mole

Explanation:

Answer 2

Explanation:

1 answer

The molecular mass of CuSO4. 5H2O is: ( Atomic mass of Cu = 63.5, H = 1, O = 16, S = 32) · Cu · = · H · = · O · = · S · = ...