The formula that contains 3 molecules of carbon dioxide is 3CO2. In your example, "2NaOH" refers to two molecules of sodium hydroxide, and "H2SO4" refers to one molecule of sulfuric acid. The designation "3CO2" specifically indicates three molecules of carbon dioxide.
if a formula contains 3 molecules of carbon dioxide is it 2NaOH, H2SO4, or 3CO2
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