Question

What is the mass of $1mole$ of $Be{\left(OH\right)}_2$?

• A. $29.03g$
• B. $43.03g$
• C. $52.04g$
• D. $44.83g$

Answer 1

The correct option is B $43.03g$

The molecular formula of Beryllium Hydroxide is $Be(OH{)}_2$

No. of moles $=\frac{\text{Mass}}{\text{Molar Mass}}$

$1=\frac{\text{Mass}}{\text{Molar Mass}}$

$\Rightarrow$ Mass of $Be(OH{)}_2=9.03+2\times 16\times 2\times 1=43.03g$