Answer:
Mass in grams of formaldehyde = 196.51 g
Explanation:
No. of molecules of formaldehyde = [tex]3.94 \times 10^{24}[/tex]
Moles is related with number of molecules as:
[tex]mol=\frac{No.\ of\ molecules}{Avogadro's\ no.}[/tex]
Avogadro's no. = [tex]6.02 \times 10^{23}[/tex]
moles of formaldehyde
[tex]=\frac{3.94\times 10^{24}}{6.02\times 10^{23}} \\=6.544\ mol[/tex]
Molar mass of formaldehyde = 30.03 g/mol
Molar mass is related with mass as:
Mass = Moles × Molar mass
= 6.544 × 30.03
= 196.51 g
