A solution of CaCl2 in water forms a mixture that is 40.5% calcium chloride by mass. If the total mass of the mixture is 983.2g, what masses of CaCl2 and water we used?  mass of CaCl2= g mass of water= g

What is the volume of concentrated HCl  to make 100 mL of 0.10 M HCl? ( density of concentrated HCl = 1.20 g/ml, mass %=37% by mass)

A solution of CaCl₂ in water forms a mixture that is 35.0% calcium chloride by mass. If the total mass of the mixture is 517.0 g, what masses of CaCl₂ and water were used? mass of CaCl₂: mass of water: g g

What is the molarity of sodium chloride in a solution that is 26% by mass NaCl and has a density of 1.03 g/mL? Write your answer as 1.23 with 3 signficant figures and no unit.

A solution is prepared by dissolving 52.3 g of RbCl in enough water to form 502 mL of solution. Calculate the mass % of RbCl in the solution if the density is 1.12 g/mL.

What is the percent by mass of a solution made by dissolving 55.0 g RbCl in 345 g water?    What is the mass percent of a solution containing 8.00 mL of ethanol (density = 0.789 g/mL) in 100.0 grams of water?

The density of sodium chloride is 2.164 g cm-³. What is the molar concentration of NaCl in a 14.5 cm³ sample of pure NaCl? molar concentration = i M What is the molar concentration of NaCl in a 25.9 g sample of pure NaCl? molar concentration = M

You have 1g of lithium orotate with a molar mass of 163.03. You wish to make 100ml of 5mM lithium orotate in aqueous solution. How many grams of lithium orotate would you need?

A chemistry student must write down in her lab notebook the concentration of a solution of sodium thiosulfate. The concentration of a solution equals the mass of what's dissolved divided by the total volume of the solution. Here's how the student prepared the solution: • The label on the graduated cylinder says: empty weight: 6.0 g • She put some solid sodium thiosulfate into the graduated cylinder and weighed it. With the sodium thiosulfate added, the cylinder weighed 94.86 g. • She added water to the graduated cylinder and dissolved the sodium thiosulfate completely. Then she read the total volume of the solution from the markings on the graduated cylinder. The total volume of the solution was 122.28 mL. What concentration should the student write down in her lab notebook? Be sure your answer has the correct number of significant digits. 1 [1] 8.mL-¹ x10 X Ś

. Intravenous (IV) saline solutions are often administered to patients in the hospital. Normal saline solution contains 0.90g NaCl in exactly 100. ml of solution. Calculate the molarity of this solution.