List the molecular masses of carbon dioxide, oxygen and helium.
Carbon Dioxide(CO2)- carbon weights 12 and oxygen weights 16 and there are 2 oxygen so they together equal 32. When you add 32 oxygen to the 12 carbon, you would get a total weight of 44.
Oxygen (O)- this has a weight of 16 on its own.
Helium(H)- has a weight of 4.
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