Question

the actual mass of a molecule of carbon dioxide is​

Answer 1

Answer : The actual mass of a molecule of carbon dioxide is, $7.30\times 10^{-23}$ gram.

Explanation :

According to Avogadro's law, 1 mole of every substance weighs equal to the molecular mass and contains Avogadro's number $6.023\times 10^{23}$ of particles.

To calculate the moles, we use the equation:

$\text{Number of moles}=\frac{\text{Given molecules}}{\text {Avogadro's number}}$

$\text{Number of moles}=\frac{1}{6.023\times 10^{23}}=0.17\times 10^{-23}moles$

As, 1 mole of $CO_2$ molecule weighs = 44 g

$0.17\times 10^{-23}$ moles of $CO_2$ molecule weighs = $\frac{44}{1}\times 0.17\times 10^{-23}=7.30\times 10^{-23}g$

Therefore, the mass of a molecule of carbon dioxide is, $7.30\times 10^{-23}$ gram.