A container contains 255 g of a mixture of and . The mixture was treated with excess and 67.2 L of was released at STP. The percentage of in the mixture is: (At. wt. )

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Question

A container contains 255 g of a mixture of $Pt$ and $Zn$. The mixture was treated with excess $HCl$ and 67.2 L of $H_2$ was released at STP. The percentage of $Pt$ in the mixture is: (At. wt. $Pt=195, Zn=65$)

Prashant Kotian · Accepted Answer

Correct answer: B. . does not react. Moles . Moles . Mass . Mass . .

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