A solution of KOH contains 15.0g of KOH in 185.0g water. What is the mass percent of KOH in the solution?
A solution of KOH contains 15.0g of KOH in 185.0g water. What is the mass percent...
a solution was prepared by dissolving 27.0 g KOH in 100 g water. A) what is mole fraction of KOH in solution? B) what is mass percent?C) what is the molality? 2. A solution was prepared by dissolving 27.0 g KOH(s)in 100.0 g water. You may use the chart below if you find usefiul to answer questions a) -e) MW (g/mol Mass ()moles 56.1 H20 18.0 Solution (a) What is the mole fraction of KOH in the solution? (5 pts...
A 2.78 L aqueous solution of KOH contains 183 g of KOH. The solution has a density of 1.29 g/mL. Calculate the molarity (M), molality (m), and mass percent concentration of the solution. molarity: 1.175 M molality: m mass percent:
What is the molarity of a solution containing 15.0g NaOH? (molar mass =40.0g?mol) per 250.0mL of solution?
Exercises (Mass Percent) 1. 3.0 grams of sugar are dissolved in 150 g of water What is the mass percent of sugar in the solution? 2. A 200-gram solution of alcohol contains 180 mL of water. What is the mass percent of alcohol? (Remember water's density.) 3. How many grams of NaBr are needed to make 50 g of a 5.0% solution? 4. How many grams of LiOH are needed to make 25 g of a 4.0% solution? 5. What...
What volume of a 0.674 M aqueous solution KOH (in mL) contains 17.0 g of KOH?
What is the mass/volume percent of a solution that contains 250 mg of NaNO3 in 2 L of solution?
7) An 800 g solution of Kool-Aid contains 780 g of water. What is the mass percent of solute in this solution? (800 - 780)/800 * 100% = 2.5% 8) How much water would I need to add to 500 mL of a 2.4 M KCl solution to make a 1.0 M solution? 9) Which mixture(s) do particles not settle out of the solution? Solutions Colloids Suspensions
If 15.0g of AlClsubscript(3) were added to the ice-water mixture, what would be the freezing point of the solution? Assume the experimental volume of solution was 65.3 mL, the experimental freeing point of solvent water was 0.5 degrees C, and Ksubscript(f) was 1.86 degreesC/M. Please show all work and math, this is for a lab report. Thank you!!
Question 1: What volume of 12.0% KOH contains 40.0 g of KOH? The density of the solution is 1.11 g/mL. Question 2: Determine the mass of calcium nitrate required to prepare 3.50 L of 0.800 M Ca(NO3)2 .
A solution of water contains 15mg of... A solution is labeled as 7.75% Naa by mass, write this unit as a fraction. Be very thorough in writing this fraction. What are the numbers, units and substance? 4. 7.75% Nad-, 5. A solution is labeled as 7.75 ppm CI by mass. Write this unit as a fraction. Be very thorough in writing this fraction. What are the numbers, units and substance? 7.75 006 7.75 ppm cr = yea! 6. Asolution of...