0.5 What mass of Na, S0, 7H,O conta...
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0.5 What mass of Na, S0, 7H,O contains exactly 6.023 x 1022 atoms of oxygen?

JEE/Engineering Exams
Chemistry
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( 254 mathrm{gm} mathrm{Na}_{2} mathrm{SO}_{4} rightarrow 6.02 times 10^{23} times 110_{2}^{2} mathrm{tem} ) ( frac{254 times 6.02 times 10^{22}}{11 times 6.02 times 10^{23}}+6.22 times 10^{22} 0 mathrm{atoms} ) ( 2.3 mathrm{gm}= )
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