Manipal Entrance Test 2014 Chemistry Paper
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Question : 45 of 60
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A certain radioactive isotope Z A X (half-life = 10 days decays to give Z − 2 A − 4 X . If 1.0 g of X is kept in a sealed vessel find the volume of He accumulated at STP in 20 days. Molar mass of Z A X = 253 u
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