19. Calculation of concentrations (ENGLISH)_okVersión en línea Perform the corresponding calculations for the following concentration problems and choose the correct result. por Mónica Rodríguez Ramírez 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? a 6.75 b 67.5 c 675 d 0.675 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 a 200 b 2000 c 20 d 2 3 A 700 g sample of water contains 3.5 mg of arsenic. Calculate the parts per million of arsenic in the sample. a 50 b 5 c 5000 d 50000 4 We want to calculate the amount in pounds (lb) of glucose that 940 g of a 4.5% m / m solution contain. a 0.093 b 42.3 c 4.230 d 9.325
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