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# BeeCee

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Questions3

### Square rooting things. ?

If you have an equation

(S)^2 / (x+y)^2 = m, can you square root the whole thing to get the following?

S/x+y = (square root of) m?

3 AnswersMathematics1 decade ago### Mmass percent of sodium chloride in an original impure substance.?

A 0.8g sample of impure sodium chloride is dissolved in water, and the chloride is precipitated with excess silver nitrate, producing 1.0 g of silver chloride. What is the mass percent of sodium chloride in the original impure sample?

1 AnswerChemistry1 decade ago### How many grams of silicon must be reacted with excess chlorine in order to obtain 17 g of SiCl4?

In the direct reaction of silicon with Cl2 the yield of SiCl4 is 50%. How many grans of the silicon must be reacted with excess chlorine in order to obtain 17g of SiCl4.

I have the answer, but I don't know how it was obtained. Please explain.

2 AnswersChemistry1 decade ago