Which of the following gases contain 9 x 10^22 molecules at standard temperature and pressure? (R.A.M: H,1; C, 12; N, 14; O, 16; NA = 6 x 10^23 mole^-1)
I 5.8 g of butane gas, C4H10
II 6.6 g of carbon dioxide gas, CO2
III 2.55 g of ammonia gas, NH3
IV 4.05 g hydrogen cyanide gas, HCN
Friday, May 22, 2009
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The answers are II, III and IV
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