I need help with this! the problem says
"Thimerosal is an organic compound (gram-molecultar mass = 404.8 g/mol). A .100% solution of thimerosal is sometimes used as an antiseptic. Assume that this solution has a density of 1.00 g/mL."
I need help with these two:
What mass of thimerosal must be mixed with 25.0 g of water to make a .100% solution?
What volume of 0.100% solution contains 0.750 g of thimerosal?
The percent concentration is 13,75 %.
12.5
50 grams
1 percent = 10 grams 2 % = 20 grams x 3 liters = 60 grams
1.084g
40.8 grams
The percent concentration is 13,75 %.
12.5
50 grams
Need to know how much of the solution you have.
This is (mass of solute) divided by (mass of total solution) expressed as a percentage. The solute is what you are dissolving into the solution. Example: you have 90 grams of water, and you add 10 grams of salt (sodium chloride). The water is the solvent, sodium chloride is the solute, and the solution is salt water. 90 grams + 10 grams = 100 grams (mass of total solution). (10 grams) / (100 grams) = 0.1 --> 10% mass mass percent concentration.
The mass of sodium hypochlorite in 2,5 kg solution is 131,25 g.Sodium chloride is only the product of a decomposition.
The answer is 8 g NaCl.
32.4
See the two Related Questions to the left for the answer.The first is how to prepare a solution starting with a solid substance (and dissolving it). The second question is how to prepare a solution by diluting another solution.
30 grams
400 mls would require 40g of glucose for a 10% solution and thus 20g for a 5% solution.