Question

Calculate the mass of a molecule of carbon dioxide in gram

Answer 1

Answer: $7.30\times 10^{-23}g$ 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:

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

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

Now 1 mole of $CO_2$ molecule weighs = 44 g

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

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

Answer 2

Answer:

Therefore 7.035*10^-23 is the actual mass of 1 molecule of CO2