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Convert into mole. (a) 12 g of oxyge...

Convert into mole.
(a) 12 g of oxygen gas
(b) 20 g of water
(c) 22 g of carbon dioxide.

Text Solution

Verified by Experts

(a) 12 g of oxygen gas `(O_(2))`
`"Molar mass of oxygen"(O_(2))=(2xx16u)=32u=32g`
`"32g of oxygen "(O_(2))=1"mol"`
`"12g of oxygen "(O_(2))=1"mol"=((12g))/((32g))=0.375"mol"`
(b)20g of water `(H_(2)O)`
`"Molar mass of water "(H_(2)O)=(2xx1u)+(1xx16u)=18u=18g`
`18"g of water" (H_(2)O)=1"mol"`
`"20g of water" (H_(2)O)=(1"mol")xx((20g))/((18g))=1.11"mol"`
(c )22g of carbon dioxide `(CO_(2))`
`"Molar mas of carbon dioxide "(CO_(2))=(1xx12u)+(2xx16u)=44u=44g`
`"44 g of carbon dioxide"(CO_(2))=1"mol"`
`"22 g of carbon dioxide"(CO_(2))=(1"mol")xx((22g))/((44g))=0.5"mol"`
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