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A lab technician is trying to prepare 100. mL glucose solution with a concentration of 5.0%...

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Chemistry

A lab technician is trying to prepare 100. mL glucose solutionwith a concentration of 5.0% by mass for a clinical trial. How manygrams of glucose should he use to prepare this 100-mL solution?Assume the density of 5% glucose solution is previously reported as1.02 g/mL.

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4.5 Ratings (758 Votes)

5.0% by mass of glucose solution is 5.0 g of Glucose present in 100 g of solution

Given density of solution , d= 1.02 g/mL

So Volume of solution , V = mass / density

                                    = 100 g / 1.02 (g/mL)

                                   = 98.0 mL

From the data 100g = 98.0 mL of the solution contains 5.0 g of glucose

                             100.0 mL of the solution contains M g of glucose

                                    M = ( 100.0x5.0) / 98.0

                                       = 5.1 g

Therefore the mass of glucose should present is 5.1 g
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