Question

The molecular mass of $C{O}_2$ is 44 amu and Avogadro's number is $6.02\times {10}^{23}$. Therefore, the mass of one molecule of $C{O}_2$ is:

• A. $7.31\times {10}^{-23}$
• B. $3.65\times {10}^{-23}$
• C. $1.01\times {10}^{-23}$
• D. $2.01\times {110}^{-23}$

Answer 1

The correct option is A $7.31\times {10}^{-23}$

molar mass of $C{O}_2$ = 44

mass of one molecule = $\frac{molecularmass}{N_A}$

mass of one molcule = $7.31\ast {10}^{-23}$