True or false: In a serial dilution, where you dilute a solution several times in a row, the concentration of the final dilution is always greater than the concentration of the original solution. True False

out of Express your answer with three significant digits. Do not include units! g/mol A sample solution has a concentration of 12.4% by mass. What mass of solute (in g) is present in 50.0 g of this sample solution? Express your answer with three significant digits. Do not include units! g + Chemistry 20 Final Exam Equation Sheet (click to open) page 1 11

If you add 250 ml of water to 250 ml of a 0.5M NaOH solution, what will the molarity of the diluted solution be?   a. 2.50 b. 0.25 c. 0.10 d. 0.12

Calculate the volume in ml of a 6.00 M HCI solution used to make 1250 ml of a 0.270 M solution. 0.0178 mL O 1.30 mL O 0.00130 mL O 2030 mL O 56.3 mL

POSTLABORATORY ASSIGNMENT 1. An oleic acid, C17H33COOH (282 g/mol), solution is added to water in a watchglass until a monolayer forms. Assume that there are no spaces between molecules in the monolayer and that each oleic acid molecule occupies an area of 0.25 nm². If the concentration of the oleic acid solution is 0.00012 g/mL, what is the experimental value of Avogadro's number? dropper pipet calibration number of drops of oleic acid in the monolayer diameter of monolayer OMA 30+20 od os pulgad Im od of ingranit yd souls mesto bonstantial = || || || 00.1 arestusslom (0) N = = = Jorna ode 65 drops/mL 16 drops 14.5 cm dirua orli unalools) mano lo zemoristalls d A(otho) wall

A solution is prepared by dissolving 23.4 g of CaCl2 (MW = 110.98 g/mol) in 355 mL of water. The density of the resulting solution is 1.05 g/mL. The concentration of CaCl2 in this solution is ________ molar.

A solution of potassium chloride in water boils at a certain temperature. What could be done to raise the boiling point of this solution?

When making a solution, the container gets hot. This is an example of an endothermic process exothermic process

For each of the following solutions, how many milliliters of water should be added to yield a solution that has a concentration of 0.125 M?a. 25.0 mL of 1.00 M AgNO3   b. 5.00 mL of 10.0 M AgNO3   c. 2.50 L of 2.50 M AgNO3 d. 75.0 mL of 0.130 M AgNO3

"Rubbing alcohol" is a mixture that is 70.% isopropyl alcohol (C3H8O) in water.  The mixture has a density of 0.79 g/mL at 20°C. What is the concentration of the isopropyl alcohol in molarity? The molar mass of isopropyl alcohol is 60.11 g/mol.   a. 11.6 M   b. 13.1 M   c. 9.2 M   d. 30.7 M