Question

What is the formula mass unit of $HCl$ ?

• A. $36.5$
• B. $35.5$
• C. $32.5$
• D. $34.5$

Answer 1

The correct option is A $36.5$

Formula mass unit of $HCl$ is : Mass of hydrogen $\left(1\right)+$ mass of chlorine$\left(35.5\right)=(35.5+1)=36.5$

Hence, option A is correct.