Question

finding moles from mass
convert 12 gram of oxygen gas into moles
for class 9

Answer 1

Hi,

=> 1 molar mass of oxygen = 32g

=> 12g of oxygen gas =?

=> we know that, Avogadro number=
$6.022 \times 10(23)$
=> 12÷32 × Avogadro number.

answer= 1.111...

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