Mole ConceptMedium
Question
A given mixture consists only of pure substance X and pure substance Y. The total mass of the mixture is 3.72 g. The total number of moles is 0.06. If the mass of one mole of Y is 48 g and there is 0.02 mole of X in the mixture, then what is the mass of one mole of X?
Options
A.90 g
B.75 g
C.45 g
D.180 g
Solution
3.72 = 0.02 × MX + 0.04 × 48 ⇒ MX = 90
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