LEVEL 3 Q10. 410 grams of limestone...
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LEVEL 3 Q10. 410 grams of limestone is treated with oxalic acid to yield 512 grams of calcium oxalate. What is the percentage of calcium carbonate in this limestone? The reaction is: CaCO3 + H2C204 → Cac, 0. + H.O Q11. What weight of CO is required to form Rez(CO)10 from 3 g of Re20, according to the unbalanced reaction: Rez0, + CO → Rez(CO)10 + CO2 (Assume Re20= 476 U, C = 12 u and 0 = 16 U) Avanti = 6 x 32 = 192

JEE/Engineering Exams
Chemistry
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