Convert into mole

Convert into mole.
(a) 12 g of oxygen gas
(b) 20 g of water
(c) 22 g of carbon dioxide

(a) $32 \mathrm{~g}$ of oxygen gas $=1$ mole

Then, $12 \mathrm{~g}$ of oxygen gas $=\frac{12}{32}$

$=0.375 \mathrm{~mole}$

(b) $18 \mathrm{~g}$ of water $=1 \mathrm{~mole}$

Then, $20 \mathrm{~g}$ of water $=\frac{18}{20}$

$=1.11$ moles (approx)

(c) $44 \mathrm{~g}$ of carbon dioxide $=1$ mole

Then, $22 \mathrm{~g}$ of carbon dioxide $=\frac{22}{44}$

$=0.5$ mole

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