well, one mole is 6.02 x 10^23 molecules.
So, divide your number by that.
A sample of air contains 4.56 x 10^24 molecules of CO2. Calculate how many moles of carbon dioxide are in that sample.
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I'm not understanding. Are you saying to do 4.56 x 10^24 first, and it's answer divide by the answer of 6.02 x 10^23?
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