How much salt (in grams) must be added to a two liter bottle of pure water to make the resulting mixture 0.035 percent salt by weight

Question

Octavio Suarez

Chemistry

8 March, 01:31

How much salt (in grams) must be added to a two liter bottle of pure water to make the resulting mixture 0.035 percent salt by weight

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Answers (1)

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Truffles · Answer 1

Answer:0.7g of salt.

Explanation:

% concentration by mass =

mass of solute/mass of solution

Solute is the salt

Solution is salt + water

Mass of water = Density of water * volume of water

Mass of water = 1000g/L * 2L

Mass of water = 2000g

Let mass of salt = x

Mass of solution = x+2000

0.035/100 = x/x+2000

0.035 (x+2000) = 100x

70 = 99.965x

x = 0.7g

Therefore the mass of salt to be added is 0.7g