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30 March, 02:57

A mixture was found to contain 1.50g of NH4CL, 0.80 g of NaCl, and 1.20 g of SiO2. What is the percentage of sand in this mixture?

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  1. 30 March, 03:16
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    Percent in mass is the amount of a component per mass of the mixture. From the given components, SiO2 represents the sand. Therefore, the percentage of sand in the mixture is:

    Percent sand = 1.20 g / (1.20 g + 1.50 g + 0.80 g) x 100% = 34.29% sand
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