Homework Answers
(a)
Mass% of NaCl in solution = (Mass of NaCl/Mass of solution)*100 = (4.78/10.25)*100 = 46.63%
(b)
Mass-volume% of NaCl in solution = (Mass of NaCl/Volume of solution)*100 = (4.78/12.34)*100 = 38.74%
(c)
Moles of NaCl = Mass/MW = 4.78/58.44 = 0.0818
Molarity = Moles/Volume in liters = 0.0818/0.01234 = 6.63 M
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A 12.34 mL solution with an unknown salt concentration had a mass of 10.25 g. When...
4 A 12.34 mL solution with an unknown salt concentration had a mass of 10.25 g....
4 A 12.34 mL solution with an unknown salt concentration had a mass of 10.25 g. When the water was evaporated from the solution, 4.78 g of NaCI remained. a Calculate the mass-mass percent NaCi concentration in the solution. Show your work b Calculate the mass-volume percent NaCl concentration in the solution. Show your work. c Calculate the molarity of NaCI in the solution. Show your work.
Section Laboratory Caleulations 1.A.0 ml sample of NaCl solution was 5057 grams. When the water was...
Section Laboratory Caleulations 1.A.0 ml sample of NaCl solution was 5057 grams. When the water was evaporated, the residual salt weighed 1.285 grams (10 pts) Fill in the data table below using the information given Mass of salt solution Mass of NaCl Mass of water Volume of solution Using the information from the data table, calculate: a. The % weight-weight of NaCl in the solution. b. The grams of NaCl per 100 grams of water. C. The molarity of the...
Section Laboratory Caleulations LA 30 ml sample of NaCl solution was 957 orams. When the water...
Section Laboratory Caleulations LA 30 ml sample of NaCl solution was 957 orams. When the water was evaporated, the residual salt weighed 1.285 grams. (10 pts) Fill in the data table below using the information given Mass of salt solution Mass of NaCl Mass of water Volume of solution Using the information from the data table, calculate: a. The % weight-weight of NaCl in the solution. b. The grams of NaCl per 100 grams of water. C. The molarity of...
Suppose a 5.00 ml of a salt solution of unknown concentration was mixed with 35.0 mL...
Suppose a 5.00 ml of a salt solution of unknown concentration was mixed with 35.0 mL of 0.523 M AgNOs. The mass of AgCI solid formed was 0.508 g. AgNO, (ag)NaCl(ag)AgClsNaNO What was the concentration of the salt solution? (ag)
Brooke Kerkhoff: Attempt 1 A solution has an unknown concentration of sodium chloride: 13.85 mL of the solution has...
Brooke Kerkhoff: Attempt 1 A solution has an unknown concentration of sodium chloride: 13.85 mL of the solution has a mass of 11.95 g. Once the water is evaporated, the mass of sodium chloride left is 3.56 g. Determine the following values for the solution. 1. 4.40 2. 14.8 mass- mass percent of sodium chloride 3 25.7 4 29.8 molarity of 5. 58.4 sodium chloride 6. 86.3 7. 89.3 mass- volume percent of sodium chloride 8. the correct answer is...
7.28 Initial Volume of NaCl solution in cylinder, (mL) Volume of NaCl solution remaining in cylinder,...
7.28 Initial Volume of NaCl solution in cylinder, (mL) Volume of NaCl solution remaining in cylinder, (mL) Volume of NaCl solution transferred to dish, (mL) Mass of dish, (g) Mass of dish and NaCl solution, (g) Mass of NaCl solution, (g) Mass of dish and dried Naci, (g) Mass of dried NaCl, (g) Density of solution, (g/mL) Percent NaCl (m/m),() Percent NaCl (m/v), (%) Molarity of NaCl, (moles/L) 1.78 5.50 79.25 85.75 6.50 80.95 1.70 1.18 262 309 5.26 Problems...
17) How many grams of water are in 250.0 g of a 5% by mass solution?...
17) How many grams of water are in 250.0 g of a 5% by mass solution? How many grams of sugar are in this solution? 18) A solution is prepared with 45.0 g of NaCl in enough water to make a 50mL solution. What is the molarity of the solution? 19) If 345 g of MgCl, solution is evaporated and 32.8 g of magnesium chloride are collected. What is the mass percent of the salt in the solution? How much...
13 A solution is prepared by dissolving 10.98 g of MgCl2 in 646 mL of water....
13 A solution is prepared by dissolving 10.98 g of MgCl2 in 646 mL of water. The total mass of the solution is 656.98 g. and the total volume is 651 mL. a What is the mass-mass percent concentration of MgCl2 in the solution? Show your work. b What is the mass-volume percent concentration of MgCl2 in the solution? Show your work. c What is the molarity of the MgCl2 in the solution? Show your work.
C. Concentration of a Sodium Chloride Solution C.1 Mass of evaporating dish Volume of NaCl solution...
C. Concentration of a Sodium Chloride Solution C.1 Mass of evaporating dish Volume of NaCl solution Mass of dish and NaCl solution C.4 Mass of dish and dry Naci C.2 17.4362 g 10.0 ml 25.6962 21.0062 g Calculations (Instruction can be found on p.86) C. Mass of NaCl solution (g) C.6 Mass of the dry NaCl salt (g) C.7 Mass/mass percent (show calculations.) C.8 Mass/volume percent (show calculations) C.9 Moles of NaCl (show calculations.) C.10 Volume of sample in liters...
2. Calculate the molarity (M) of 30.0 g of NaOH in 350 mL of NaOH solution....
2. Calculate the molarity (M) of 30.0 g of NaOH in 350 mL of NaOH solution. Show all the step by step work: 3. Calculate the amount of solute, in moles, grams or milliliters, needed to prepare the following solutions. Show all the step by step solution: a. 1.00 L of a 3.00 M NaCl solution (moles of solute) b. 2.00 L of a 1.50 M NaOH solution (grams of solute) c. Milliliters of 1.50 M NaCl solution to obtain...
4 A 12.34 mL solution with an unknown salt concentration had a mass of 10.25 g. When the water was evaporated from the solution, 4.78 g of NaCI remained. a Calculate the mass-mass percent NaCi concentration in the solution. Show your work b Calculate the mass-volume percent NaCl concentration in the solution. Show your work. c Calculate the molarity of NaCI in the solution. Show your work.
Section Laboratory Caleulations 1.A.0 ml sample of NaCl solution was 5057 grams. When the water was evaporated, the residual salt weighed 1.285 grams (10 pts) Fill in the data table below using the information given Mass of salt solution Mass of NaCl Mass of water Volume of solution Using the information from the data table, calculate: a. The % weight-weight of NaCl in the solution. b. The grams of NaCl per 100 grams of water. C. The molarity of the...
Section Laboratory Caleulations LA 30 ml sample of NaCl solution was 957 orams. When the water was evaporated, the residual salt weighed 1.285 grams. (10 pts) Fill in the data table below using the information given Mass of salt solution Mass of NaCl Mass of water Volume of solution Using the information from the data table, calculate: a. The % weight-weight of NaCl in the solution. b. The grams of NaCl per 100 grams of water. C. The molarity of...
Suppose a 5.00 ml of a salt solution of unknown concentration was mixed with 35.0 mL of 0.523 M AgNOs. The mass of AgCI solid formed was 0.508 g. AgNO, (ag)NaCl(ag)AgClsNaNO What was the concentration of the salt solution? (ag)
Brooke Kerkhoff: Attempt 1 A solution has an unknown concentration of sodium chloride: 13.85 mL of the solution has a mass of 11.95 g. Once the water is evaporated, the mass of sodium chloride left is 3.56 g. Determine the following values for the solution. 1. 4.40 2. 14.8 mass- mass percent of sodium chloride 3 25.7 4 29.8 molarity of 5. 58.4 sodium chloride 6. 86.3 7. 89.3 mass- volume percent of sodium chloride 8. the correct answer is...
7.28 Initial Volume of NaCl solution in cylinder, (mL) Volume of NaCl solution remaining in cylinder, (mL) Volume of NaCl solution transferred to dish, (mL) Mass of dish, (g) Mass of dish and NaCl solution, (g) Mass of NaCl solution, (g) Mass of dish and dried Naci, (g) Mass of dried NaCl, (g) Density of solution, (g/mL) Percent NaCl (m/m),() Percent NaCl (m/v), (%) Molarity of NaCl, (moles/L) 1.78 5.50 79.25 85.75 6.50 80.95 1.70 1.18 262 309 5.26 Problems...
17) How many grams of water are in 250.0 g of a 5% by mass solution? How many grams of sugar are in this solution? 18) A solution is prepared with 45.0 g of NaCl in enough water to make a 50mL solution. What is the molarity of the solution? 19) If 345 g of MgCl, solution is evaporated and 32.8 g of magnesium chloride are collected. What is the mass percent of the salt in the solution? How much...
13 A solution is prepared by dissolving 10.98 g of MgCl2 in 646 mL of water. The total mass of the solution is 656.98 g. and the total volume is 651 mL. a What is the mass-mass percent concentration of MgCl2 in the solution? Show your work. b What is the mass-volume percent concentration of MgCl2 in the solution? Show your work. c What is the molarity of the MgCl2 in the solution? Show your work.
C. Concentration of a Sodium Chloride Solution C.1 Mass of evaporating dish Volume of NaCl solution Mass of dish and NaCl solution C.4 Mass of dish and dry Naci C.2 17.4362 g 10.0 ml 25.6962 21.0062 g Calculations (Instruction can be found on p.86) C. Mass of NaCl solution (g) C.6 Mass of the dry NaCl salt (g) C.7 Mass/mass percent (show calculations.) C.8 Mass/volume percent (show calculations) C.9 Moles of NaCl (show calculations.) C.10 Volume of sample in liters...
2. Calculate the molarity (M) of 30.0 g of NaOH in 350 mL of NaOH solution. Show all the step by step work: 3. Calculate the amount of solute, in moles, grams or milliliters, needed to prepare the following solutions. Show all the step by step solution: a. 1.00 L of a 3.00 M NaCl solution (moles of solute) b. 2.00 L of a 1.50 M NaOH solution (grams of solute) c. Milliliters of 1.50 M NaCl solution to obtain...
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