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20 February, 01:03

A rock has a mass of 12000 g. It contains 300.0 grams of gold. What is the mass percent of gold in the rock? 25.00% 4.000% 2.500% 100.0%

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  1. 20 February, 03:43
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    The mass percent of gold in the rock is 2.500 %

    Explanation:

    Step 1: Data given

    Mass of the rock = 12000 grams

    Mass of gold = 300.0 grams

    Step 2: Calculate mass %

    Mass % = mass of gold / mass of gold

    Mass % = (300.0 grams / 12000 grams) * 100 %

    Mass % = 2.500 %

    The mass percent of gold in the rock is 2.500 %
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