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# Amixture was found to contain 1.50 g NH_4Cl, 0.80 g NaCl, and 1.20 g SiO_2. What is the percentage of sand in this mixture?

Sep 8, 2016

$\text{Percentage of sand}$ $=$ "Mass of sand"/"Mass of mixture"xx100%

#### Explanation:

$\text{Percentage of sand}$ $=$ (1.20*g)/(1.20*g+1.50*g+0.80*g)xx100% $\cong$ 30%?

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