Formaldehyde has the formula CH₂O.How many molecules are there in 0.11 g of formaldehyde?

Question

Quizplus · Accepted Answer

To find the number of molecules, first calculate the molar mass of formaldehyde (CH₂O): C (12.01 g/mol) + H₂ (2.02 g/mol) + O (16.00 g/mol) = 30.03 g/mol. Then, find the number of moles in 0.11 g: 0.11 g / 30.03 g/mol = 0.00366 mol. Finally, multiply by Avogadro's number (6.022 × 10²³ molecules/mol) to find the number of molecules: 0.00366 mol × 6.022 × 10²³ molecules/mol = 2.2 × 10²¹ molecules.

Formaldehyde Has the Formula CH2O

Formaldehyde Has the Formula CH₂O