Prepare 200 ml of 1.0 M glucose solution and find that the glucose material you are using contains 5% water. How much do you need to weigh that kind of glucose powder? The molecular weight of glucose is 180.16 g / mol.

A 55% sucrose solution lost 240 mL by evaporation. After evaporation what is the sucrose concentration in the remaining 300 mL? Round your final answer to 2 decimal places if necessary.

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You you have a very concentrated solution (12 M) of potassium chloride (KCl). You need it to be at the lowest concentration possible for the experiment you are about to conduct. The problem is you forgot to order lab supplies, so you only have 2 L of distilled water left. What would be the final concentration if you added the 2 L of distilled water to the 0.5 L of 12 M KCl?

A soft drink contains 54 gg of sugar in 339 gg of H2OH2O.   Part A What is the concentration of sugar in the soft drink in mass percent?         Express your answer in percent to two significant figures.

A dopamine vial that contains 200 mg in 5 mL is diluted with 0.9% sodium chloride to prepare a total volume of 500 mL. What is the concentration (in micrograms per mL) of dopamine within the 500 mL?

Most ammonia solutions you can buy at the store are about 35% ammonia by mass. How much of this solution would you need to produce 5 liters of a 10% ammonia solution? Show all work and explain each step.

Worksheet 1 Laboratory Measurement BI218 6. Molarity a) The molecular formula for glucose is C6H1206. Using this information, determine the mass of glucose needed to prepare 1L of a 0.5M glucose solution. The periodic table of elements is found at the end of the lab. Show all your work.

What mass ( in g ) of NaCl is needed to make 530 g of a 21.1% NaCl solution? Report your answer to 2 decimal places.

Use the graph on the last page to answer questions 10, 11 and 12. At 80˚C, what mass of sodiumchloride dissolves in1.0 L of water?