Answer: 2.21 x [tex] 10^{21} [/tex] molecule
To answer this question, you need to know the formaldehyde molecular mass.
Formaldehyde molecular weight would be 12+ 1(2) + 16= 30 g/mol
After knowing the molecular mass you can count how many molecules by multiplying it by Avogadro's number. The calculation would be:
0.11g / (30g/mol) x 6.022140857 × [tex] 10^{23} [/tex] = 0.02208 x [tex] 10^{23} [/tex] = 2.21 x [tex] 10^{21} [/tex]
