Question

HOW MANY MOLES IN 20 GRAM IN CH3OH

Answer 1

molecular mass of CH3OH = 32
no. of moles = given mass/molecular mass
20/32
0.625

Answer 2

$\boxed{Final \: Answer :-}$

$0.625$

$\boxed{Acoording \: To \: Question \: :-}$

$given \: mass \: (m) \rightarrow 20 \: gm\\molecualr \: mass (M)\rightarrow of \: CH_3OH$

$\boxed {Formula \: Used :-}$

$mole=\frac{mass \: in \: grams }{molecular \: mass}$ ⇒ $n=\frac{m}{M}$

$\boxed{Solution :-}$

$H=1\\C=12\\O=16$

$molecular \: mass \:of \:CH_3OH \: (M) = 12+1 \times 3 + 16 +1\\=12+3+16+1 \\=32$

$n=\frac{m}{M}$

$n=\frac{20}{32}\\n=0.625 \: mol$

there are $\boxed{0.625}$ moles in 20 gm of $CH_3OH$