A dissolved chemical in water has a concentration of 30 ppm by mass. What is the...

Question

Question

Answer 1

Answer #1

Q. Answer:-

Given that , the chemical in water has a concentration of 30 ppm, that means 30 mg of chemical is dissolved in 1L of water.

We have to calculate the quantity of water needed to have 1 g of this chemical.

First we convert 1 gm into milligram, multiplying the value by 1000. Thus

1 gm = 1 × 1000 = 1000 mg

Since, 30 mg of chemical is dissolved in 1L of water, thus, 1000 mg chemical is dissolved in

(1000 mg × 1L ) ÷ 30 mg

= 33.3 L

Thus the answer is 33.3 L

Answer 2

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