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Find : (i) No.of moles in 10^(20) atoms ...

Find : (i) No.of moles in `10^(20)` atoms of `Cu`
(ii) Mass of `200_(8)^(16)O` atoms in amu
(iii) Mass of `100` atoms of `N` in gm
(iv) No.of molecules & atoms in `54 gmH_(2)O`
(v) No.of atoms in `88gmCO_(2)` .

Text Solution

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The correct Answer is:
`(i)(10^(20))/(N_(A))"moles"" "(ii)3200 "amu"" "(iii)14xx1.66xx10^(-24)100g" "(iv)3N_(a),9N_(9)" "(v)6N_(A)`
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