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28 July, 03:01

0.509g sample pure platinumetal was reacted with HCl to firm O. 889g of platinum and chlorine. what is the percent by mass of platinum

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  1. 28 July, 03:58
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    Platinum plus chlorine equals 0.889 grams whereas the platinum alone is 0.509grams so 0.509/0.889grams = 57% of the mass of the platinum plus chlorine. The chlorine would be 0.889-0.509=0.38 grams. The chlorine would make up about 42.7% of the total mass in grams.
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