Answer:
100gmol⁻¹
Step-by-step explanation:
Problem: To calculate the molecular mass of
KHCO₃
Solution
The molar mass of a substance is defined as the number of grams per mole of that substance.
To determine the molar mass of this compound we find:
> the component atomic masses
>we express it in gmol⁻¹
From the periodic table, the atomic masses of the elements in the given compound are:
K = 39g
H = 1g
C = 12g
O = 16g
Now let's add these numbers together:
KHCO₃ = [39 + 1 + 12 + (16x3)]
= 39 +13 +48
= 100g
Molar mass of KHCO₃ = 100gmol⁻¹