20. What is a mole? What is the unit of mole? How many molecules are there in a 22 g mass of a
carbon dioxide ?explain
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Carbon has a relative atomic mass of 12.
Oxygen has a relative atomic mass of 16.
12+(2x16)=44
Therefore 1 mole of CO2 has a relative atomic mass of 44.
22/44=0.5, so there is half a mole of CO2 in 22g of it
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