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How many molecules are in 24.0 grams of CO 2 ? also, How many formula units does 300.0 grams of calcium carbonate represent? pretty confused about these, help would be greatly appreciated! :)

How many molecules are in 24.0 grams of CO2?


also,



How many formula units does 300.0 grams of calcium carbonate represent?


pretty confused about these, help would be greatly appreciated! :)


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1 Answers

anil kumar
38 Points
11 years ago

One mole of co2 weighs 44 grams i.e avagadro number of co2 molecules weigh 44 grams similarly 24 grams contain 24N/44 molecules of co2 i.e 6N/11 molecules where N is 6.023*10^23 a formula unit of ionic compounds is similar to a molecule in covalent compounds one mole of formula unit of CaC03 weighs 100 grams hence 300 grams contain 3N formula units

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