Question

Find the number of moles in 3.10 x 10^-1g of boron

Answer 1

Answer:

0.0286 moles

Explanation:

Given mass, $m=3.1\times 10^{-1}g=0.31\ g$

Molar mass of boron, M = 10.811 g/mol

$\text{No of moles}=\dfrac{\text{given mass}}{\text{molar mass}}\\\\n=\dfrac{0.31}{10.811 }\\\\n=0.0286$

Hence, there are 0.0286 moles in given mass of boron.