Answer to Question #108033 in General Chemistry for Alex Centers

Question

At STP, between 4.0 grams of helium and 44.0 grams of carbon dioxide, what can you say about the number of molecules in each sample of gas? Explain.

Answer 1

In 4.0 grams of He there is 4/2 = 2 mole of helium, i.e. 2*6.02*10^23 = 1.204*10^24 molecules

In 44.0 grams of CO2 there is 1 mole, i.e. 6.02*10^23 molecules