Question

What do you mean by mole find number of moles in 20g of carbon dioxide

Answer 1

mole is a quantity of measuring atoms in a substance.
no. of moles = given mass / atomic mass
no. of moles= 20/44
no.of moles = 0.45 moles of CO2

Answer 2

mole =6.022×10^23

no. of moles =given mass ÷actual mass

=20÷12+16×2

=20÷44

=5÷11

=0.45 moles

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