Question

What is the molecular mass of potassium hydrogen carbonate (KHCO3)? A. 68 g/mol B. 84 g/mol C. 100 g/mol D. 116 g/mol

Answer 1

The answer is C 100g/mol

Answer 2

Answer:

Molecular mass of $KHCO_{3}$ is 100 g.

Explanation:

Molecular mass of a molecule is the summation of atomic masses of all constituting atoms.

Molecular mass of  $KHCO_{3}$= (Atomic mass of K)+(Atomic mass of H)+(Atomic mass of C)+ ($3\times$Atomic mass of O)

So, molecular mass of $KHCO_{3}$ = (39 g)+(1 g)+ (12 g)+($3\times$ 16 g) = 100 g