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16-08-2016
Chemistry

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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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20-08-2016

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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