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19. Calculation of concentrations (ENGLISH)

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Perform the corresponding calculations for the following concentration problems and choose the correct result.

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19. Calculation of concentrations (ENGLISH)
 

19. Calculation of concentrations (ENGLISH)Online version

Perform the corresponding calculations for the following concentration problems and choose the correct result.

by Diego Mendoza Montero
1

You want to prepare 75 g of a 0.9% m/m saline solution to perform a nasal wash on a person suffering from allergic rhinitis. How many grams of sodium chloride (NaCl) are needed to prepare this solution?

2

To make a soap, it is required to prepare 100 mL of a 0.5 M sodium hydroxide (NaOH) solution. How many g of NaOH are required to prepare such a solution? NaOH = 40 g/mol

3

A 700 g sample of water contains 3.5 mg of arsenic. Calculate the parts per million of arsenic in the sample.

4

We want to calculate the amount in pounds (lb) of glucose that 940 g of a 4.5% m / m solution contain.

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