1.

What is the mass in grams of : (i) 6.022 xx 10^(23) atoms of oxygen (ii) 1.0 xx 10^(23) molecules of H_(2)S (iii) 6.022 xx 10^(23) molecules of oxygen ?

Answer»


SOLUTION :(i) `6.022 xx 10^(23)` atoms of OXYGEN have mass =16.0 G
`6.022xx 10^(23)` MOLECULES of `H_(2)S` have mass = 34.0 g
`1.0 xx 10^(23)` molecules of `H_(2)S` have mass `= (34.0xx10^(23))/(6.022xx10^(23))=5.645g`
(iii) Mass of `6.022 xx 10^(23)` molecules of oxygen `(O_(2))=32g`


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