Grade 11Physical Chemistry
Define mole and calculate the number of molecules present in 1.12×10–7 cc of a gas S.T.P
1 Answer
gaming with siddharth !!!
In simple way 1 mole is equal to avagadro number which is 6.022 ×10^23 molecules. We use this in our daily life to measure amount of substance having particles like atoms, molecules, electrons etc
And for the sum
Ans is 3.011×10^12
The method is
given volume÷22.4=given molecules÷ avagadro number
1cc = 10^-3 L
So given volume is 1.12×10^-10 L
So then after in the above formula we get
1.12 × 10^-10÷22.4 = given molecules÷ avagadro number
Avagadro number value is 6.022×10^23 molecules
After solving u will get 3.011×10^12 molecules
Hope this helps u cheer up
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