Question

convert into mole 21 gram of carbon dioxide​

Answer 1

1 mole of Carbon dioxide = 12+16×2= 44g

Or

44g of carbon dioxide = 1 mole

21g of carbon dioxide = 44/21 = 2.09 moles

Hope it helps....

Answer 2

0.48 moles in 21 gram of carbon dioxide​

Explanation:

According to avogadro's law, 1 mole of every substance occupies 22.4 L at STP and contains avogadro's number $6.023\times 10^{23}$ of particles.

To calculate the moles, we use the equation:

$\text{Number of moles}=\frac{\text{Given mass}}{\text {Molar mass}}=\frac{21g}{44g/mol}=0.48moles$

Thus 0.48 moles in 21 gram of carbon dioxide​

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