That would mean 3.0 moles of CO2 have 6.02 x 10^23 times 3.0.
So that would be 1.8 x 10^24 molecules in 3.0 moles of C02.
Trust me, if you have difficulty doing even this much, get ready for a tough time in AP Chem because this should already be a piece of cake. I advise you to quickly master this along with the concepts molar mass, mole-to-mole ratio, the concept of molarity, dimensional analysis, and stoichiometry as they will be used very often.
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Answer:
One mole of anything has 6.02 x 10^23 molecules.
That would mean 3.0 moles of CO2 have 6.02 x 10^23 times 3.0.
So that would be 1.8 x 10^24 molecules in 3.0 moles of C02.
Trust me, if you have difficulty doing even this much, get ready for a tough time in AP Chem because this should already be a piece of cake. I advise you to quickly master this along with the concepts molar mass, mole-to-mole ratio, the concept of molarity, dimensional analysis, and stoichiometry as they will be used very often.