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WULUI 2. Explain how stirring a solution would effect the rate of dissolving. 3. Explain how...
Solutions Experiment 2 Prelab Assignment (Due before lab starts) Name Lab Day / Time 1. Indicate...
Solutions Experiment 2 Prelab Assignment (Due before lab starts) Name Lab Day / Time 1. Indicate which is the solvent and which is the solute in the following: Solvent Solute a. 50 mL H,O and 10 g sugar b. 150 ml H,0 and 50 mL isopropyl alcohol c. 150 mL H,0 and 250 mL isopropyl alcohol 2. Explain how stirring a solution would effect the rate of dissolving. 3. Explain how heating a solution would effect the rate of dissolving...
Post-lab: What is the effect of each of the following on the rate of dissolving a...
Post-lab: What is the effect of each of the following on the rate of dissolving a solid in a liquid?" 1. a. Heating the solution b. Stirring the solution c. Grinding the solute (increases/decreases) (increases/decreases) (increases/decreases) 2. A 25.00mlL KCI solution with a mass of 27.913g was heated and the remaining residue has amass of 0.613g. Find the mass percent and molarity of KCI in the solution. Mass%: Molarity (M): 3. What is the molarity of a 10.0 % by...
Indicate how each of the following would affect the value of the absorbance (too high, too low, or not effect) of the indicated solution
Indicate how each of the following would affect the value of the absorbance (too high, too low, or not effect) of the indicated solution. I really need help. I do not understand these questions! This is from a chemistry activity to determine the unknown concentration of an Erythrosin B solution by using a spectrophotometer. a. A student prepares solution A as instructed and pours it into a wet beaker. b. A student rinses the 10.00 mL pipet only with DI...
Question 7 3 pts How will each of the following changes effect the rate at which...
Question 7 3 pts How will each of the following changes effect the rate at which gas molecules collide with the walls of their container? a. Increasing the volume of a container will cause the gas molecules to collide with the walls of the container Select) b. Decreasing the temperature of a confined sample of gas will cause the molecules of gas to collide with the walls of a container (Select] c. Increasing the pressure by decreasing the volume will...
PART IV: Mass vs PE,KE, and total Energy 12. Hypothesis: How would increasing the mass effect...
PART IV: Mass vs PE,KE, and total Energy 12. Hypothesis: How would increasing the mass effect the PE, KE and total energy of the system? Hit reset and click energy graph, ruler and timer. Mass of Period kinetic Kinetic Potential Potential Total Pendulum (secs) Energy (cm) Energy (cm) Energy(cm) Energy(cm) Energy (cm) Bob At bottom At top At Bottom At Top .15 kg .30 kg .50 kg .80 kg 13. Was your hypothesis correct? Explain. 14. When the mass increased...
3. A solution is prepared by dissolving 12.5 g of glucose (CHarO%) in 100.0 g of...
3. A solution is prepared by dissolving 12.5 g of glucose (CHarO%) in 100.0 g of water. a. What is the concentration of that solution in percent glucose by mass? b. What is the concentration of that solution in mola lity (m)? c. You measured the density of the final solution to be 1.06 g/m L. What is the concentration of the solution in molarity (M)? 4. Calculate the molarity of a 50% sulfuric acid solution by mass. The density...
a) Write a procedure that you would follow to demonstrate the effect of increasingly higher concentrations...
a) Write a procedure that you would follow to demonstrate the effect of increasingly higher concentrations of hydrochloric acid on its rate of reaction with antacid tablets. You have seen examples of procedures involving the effects of surface area and temperature on this reaction in the lesson and in the Support Questions. Only use the materials listed in the lesson. (5 marks) b) Design a table (giving headings only) for your observations. (2 marks) c) Describe and explain three safety...
Explain what effect each of the following mistakes would have on a simple distillation: a) Failure to add a boilin...
Explain what effect each of the following mistakes would have on a simple distillation: a) Failure to add a boiling stone. b) Heating the distillation flask too fast. c) Heating the distillation flask to dryness. d)Using a distillation flask that has a maximum capacity equal to the volume of liquid. e) Using a much larger (e.g., 50 mL) distillation flask. f)Putting the thermometer all the way into the liquid in the distillation flask 1. 2. Using Raoult's Law, calculate the...
Question 2: Rate of Dissolving (9 points) a.) A student wants to determine how long it...
Question 2: Rate of Dissolving (9 points) a.) A student wants to determine how long it takes to dissolve 51.3 g of common table salt (sodium chloride) in 1L of water by monitoring the solution. It takes 26.7 seconds for the salt to completely dissolve. Determine the rate of dissolution. (2 points) b.) Describe the rate constant expression if the reaction was first-order in NaCl. (2 points) c.) Write the equation that can be used to predict that change in...
1. What effect does consentration have on the reaction rate? 2. what would you predict for...
1. What effect does consentration have on the reaction rate? 2. what would you predict for the rate if 2.5 ml of water were mixed with 2.5 ml of the potassium iodate solution then 2 ml of the sodium meta-bisulfite/starch solution were added? pleas explain how you arrived at your nswear?
Solutions Experiment 2 Prelab Assignment (Due before lab starts) Name Lab Day / Time 1. Indicate which is the solvent and which is the solute in the following: Solvent Solute a. 50 mL H,O and 10 g sugar b. 150 ml H,0 and 50 mL isopropyl alcohol c. 150 mL H,0 and 250 mL isopropyl alcohol 2. Explain how stirring a solution would effect the rate of dissolving. 3. Explain how heating a solution would effect the rate of dissolving...
Post-lab: What is the effect of each of the following on the rate of dissolving a solid in a liquid?" 1. a. Heating the solution b. Stirring the solution c. Grinding the solute (increases/decreases) (increases/decreases) (increases/decreases) 2. A 25.00mlL KCI solution with a mass of 27.913g was heated and the remaining residue has amass of 0.613g. Find the mass percent and molarity of KCI in the solution. Mass%: Molarity (M): 3. What is the molarity of a 10.0 % by...
Question 7 3 pts How will each of the following changes effect the rate at which gas molecules collide with the walls of their container? a. Increasing the volume of a container will cause the gas molecules to collide with the walls of the container Select) b. Decreasing the temperature of a confined sample of gas will cause the molecules of gas to collide with the walls of a container (Select] c. Increasing the pressure by decreasing the volume will...
PART IV: Mass vs PE,KE, and total Energy 12. Hypothesis: How would increasing the mass effect the PE, KE and total energy of the system? Hit reset and click energy graph, ruler and timer. Mass of Period kinetic Kinetic Potential Potential Total Pendulum (secs) Energy (cm) Energy (cm) Energy(cm) Energy(cm) Energy (cm) Bob At bottom At top At Bottom At Top .15 kg .30 kg .50 kg .80 kg 13. Was your hypothesis correct? Explain. 14. When the mass increased...
3. A solution is prepared by dissolving 12.5 g of glucose (CHarO%) in 100.0 g of water. a. What is the concentration of that solution in percent glucose by mass? b. What is the concentration of that solution in mola lity (m)? c. You measured the density of the final solution to be 1.06 g/m L. What is the concentration of the solution in molarity (M)? 4. Calculate the molarity of a 50% sulfuric acid solution by mass. The density...
Explain what effect each of the following mistakes would have on a simple distillation: a) Failure to add a boiling stone. b) Heating the distillation flask too fast. c) Heating the distillation flask to dryness. d)Using a distillation flask that has a maximum capacity equal to the volume of liquid. e) Using a much larger (e.g., 50 mL) distillation flask. f)Putting the thermometer all the way into the liquid in the distillation flask 1. 2. Using Raoult's Law, calculate the...
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