Question

convert into moles
1) 88g of Co2 gas
2) 12g of O2 gas

Answer 1

1mole of molecule =gram atomic mass of molecule
1mole of CO2= gram atomic mass of CO2
= 12+16×2
= 44u =44g
therefore 1g of CO2= 1/44 mole
88g of CO2=1/44×88 mole
88g of CO2= 2 mole

Answer 2

1mole of molecule =gram atomic mass of molecule

1mole of CO2= gram atomic mass of CO2

= 12+16×2

= 44u =44g

therefore 1g of CO2= 1/44 mole

88g of CO2=1/44×88 mole

88g of CO2= 2 mole

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