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28-03-2018
Chemistry

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a sample has 25.7g of calcium oxide. How many moles are CaO are contained in the sample?

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jenniferxorellana jenniferxorellana

28-03-2018

0.4582951420714879 moles

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28-03-2018

Here is the working out:

Mass= mr x mol
Mol = mass/mr
So molCao = 25.7/(16+40)= 0.459moles

Hope this helps!!! Xx

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