1.

Sodium chloride, NaCl, contains 39% Na (sodium) and 61% Cl (chloride) by mass. If you have a 150-g sample of NaCl, how many grams of sodium and chloride are there in the sample?

Answer»

Answer :-

58.5 grams of Sodium and 91.5 grams of Chlorine are there in the sample .

EXPLANATION :-

We have :-

→ Percentage of Sodium (Na) = 39 %

→ Percentage of Chlorine (CL) = 61 %

→ Mass of the sample of NaCl = 150 g

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Mass of Sodium :-

Let the required mass of Sodium in the sample, be "x" grams . So, required mass :-

⇒ (x/150) × 100 = 39

100X/150 = 39

⇒ 100x = 39(150)

⇒ 100x = 5850

⇒ x = 5850/100

⇒ x = 58.5 g

Mass of Chlorine :-

Let the required mass of Cholrine in the sample be "y" grams. Now, we have :-

⇒ (y/150) × 100 = 61

⇒ 100y/150 = 61

⇒ 100y = 61(150)

⇒ 100y = 9150

⇒ y = 9150/100

⇒ y = 91.5 g



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