Mass of 216.5ml of a gas at S.T.P.is find to be 0.6862g. calculate molecular mass of gas and atomic mass
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at STP 1mole gas= 22.4 litre volume
so,
22.4litre= 22400ml --:--1mole
1ml--:--1/22400 mole
so,
216.5--:--216.5/22400mole
now,
216.5/22400mole=.6862g
1mole= .6862×22400/216.5
1mole = 71g
so,
22.4litre= 22400ml --:--1mole
1ml--:--1/22400 mole
so,
216.5--:--216.5/22400mole
now,
216.5/22400mole=.6862g
1mole= .6862×22400/216.5
1mole = 71g
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