Question

calculate the number of moles of 240gr of (CH⁴)​

Answer 1

Molar Mass of methane:-

$\\ \sf\longmapsto CH_4$

$\\ \sf\longmapsto 12u+4(1u)$

$\\ \sf\longmapsto 12u+4u$

$\\ \sf\longmapsto 16u$

$\\ \sf\longmapsto 16g/mol$

Now

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

$\\ \sf\longmapsto No\:of\:moles=\dfrac{240g}{16g/mol}$

$\\ \sf\longmapsto No\: of\:moles=15mol$