Answer to Question #335680 in General Chemistry for Han

Question

What number of molecules of CO2 will be produced if 3x10^24 molecules of O2(g) reacts?

Answer 1

1 mol O₂ molecules = 6.022×10²³ molecules O2

Use dimensional analysis to convert molecules O₂ to moles O₂

3×10²⁴ molecules O₂ × (1 mol O₂ molecules/6.022×10²³ molecules O₂) = 4.98 mol CO₂

C + O₂ = CO₂

n(CO₂) = n(O₂) = 4.98 moles

N(CO₂) = 4.98 • 6.022×10²³ = 3×10²⁴ molecules