Question

What quantity in moles of LiBr are in 66.1 grams of LiBr?

Answer 1

Molar mass of LiBr

• 7+80=87g/mol

$\\ \sf\hookrightarrow No\:of\;moles=\dfrac{Given\:mass}{Molar\:mass}$

$\\ \sf\hookrightarrow No\:of\:moles=\dfrac{66.1}{87}$

$\\ \sf\hookrightarrow No\:of\:moles=0.75mol$