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22 May, 11:50

If a silver dollar contains 91.0% silver by mass, how many kilograms of silver can be extracted from 6.34 kg of silver dollars?

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  1. 22 May, 14:01
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    5.7 kg of silver

    Explanation:

    This data 91.0% silver by mass means, that in 100 g of silver dollar, 91 g are silver.

    Let's work with a rule of three. Previously, convert g to kg (/1000)

    100 g = 0.1kg

    If in 0.1 kg we have 91 grams of Ag

    In 6.34kg we would have (91. 6.34) / 0.1 = 5769.4 grams of Ag

    This can be converted to kg.

    5769.4 g = 5.7 kg
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