Your body uses about 24 grams of Glucose to run cellular respiration. How many molecules does your body need for cellular respiration?

for the cellular respiration the human body needs 1.424 E21 molecules of glucose

Explanation:

mass glucose = 24 g

∴ Mw glucose = 180.156 g/mol

∴ 1 mol ≡ 6.022 E23 molecules

⇒ mol glucose = (24 g) * (mol/180.156 g) = 0.1332 mol glucose

⇒ molecules glucose = (0.1332 mol glucose) * (6.022 E23 molecules/mol)

⇒ molecules glucose = 1.424 E21 molecules