Homework Answers
The number of ions per unit volume carrying the current decreases on dilution so coundictivity always decreases with decrease in concentration.
as we dilute the soltion the ions concentration decreases due to increase i the volume of the solvent. therefore conductivity decreases.
however molar conductance of the solution increases as it is inversely proportional to M.
molar conductance = K/M (here M is the molarity of the solution.)
cucl2 solution before dilution will have higher conductivity as compared to cucl2 after dilution.
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Predict if solution will have its conductivity (1) increased (2) decreased or (3) will stay the...
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predict which solution will have high electrical
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i need help creatimg a graph and solving to fill in all the blanks. please help me out and show me how to solve to fill in the blanks Part 1: Determining molar conductivity of NaCI Stock Solution...
i need help creatimg a graph and solving to fill in all the
blanks. please help me out and show me how to solve to fill in the
blanks
Part 1: Determining molar conductivity of NaCI Stock Solution Stock NaCI solution Supporting Calculation |none required none required Mass of NaCI Volume of solution Molarity of stock solution 8,80% 256 MC Diluted Standards Standard mL of stockM Conductivity mS/cm Molarity Supporting calculation for molarity diluted to 100 mL moles/L 5.00 280,...
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3. What is the Ka of an acid if a 0.250 M solution has a pH equal to 179. 4. The first-order decomposition of cyclopropane has a rate constant of 5.4 x 10-2 hr 1. If the initial concentration of cyclopropane is 0.150 M, what is the concentration of cyclopropane after 22 hr? 5. Draw an arrow in the direction the reaction will proceed if the following changes are made. I indicate if the K value will increase decrease or...
1. 2. During 2013, a country reported that its real GDP increased by $3.0 billion. If...
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During 2013, a country reported that its real GDP increased by $3.0 billion. If the slope of its aggregate planned expenditure curve is 0.9, then which of the following might have led to the increase in real GDP? Exports increased by $0.3 billion. Exports decreased by $0.3 billion. Investment decreased by $0.3 billion. o Imports increased by $0.3 billion. Government expenditure on goods and services increased by $3 billion. During 2013, exports increase from $1.0 trillion to $1.5...
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3 parts to this question...
please help
Predict/Calculate Problem 19.31 12 of 20 IP The point charges in the figure below have the following values: q1 = 1.9 C, q2 = 6.3 C, 43 = -0.91 pc. II Review Given that the distance d in the figure is 4.31 cm, find the magnitude of the net electrostatic force exerted on the point charge 91 Express your answer using two significant figures. 42 + VO AEC ? Friet = N Submit...
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predict which solution will have high electrical
conductivity
Question 2: Give one example of a situation with high kinetic energy and one example of a situation with high potential energy. Explain your answers for full credit (4 pts). Question 3: Predict which solutions will have a higher electrical conductivity. Justify your choice for full credit (4 pts). A. 0.200 M NaCl or 0.150 M CaCl2 B. 14.22 g of cobalt(II) nitrate in 57.8 mL of water or 9.528 g of...
4. At 25°C, the resistance of a conductivity cell with KCI solution (0.01 mol dm) is 112.10. After filling another solution X with the same concentration, its resistance changes to 2184 (5 marks) (1) Calculate the cell constant Ke (2) Calculate the conductivity of X solution, (3) Calculate the molar conductivity of X solution. (Ignore the water conductivity, At 25°C, the conductivity of KCI solution (0.01 mol dm) is 0.14114 Sm')
1. The solubility of a gaseous solute in water is by an increase in pressure. Increased decreased not affected 2. A supersaturated solution may be prepared by slowly cooling down a solution saturated at an elevated temperature. TRUE FALSE 3. A dilution is a solution made by adding a solvent to a supersaturated solution. TRUE FALSE 4. When sugar & water are mixed, a clear liquid results. In this scenario, the sugar is considered a Solute Solution Solvent All of...
i need help creatimg a graph and solving to fill in all the
blanks. please help me out and show me how to solve to fill in the
blanks
Part 1: Determining molar conductivity of NaCI Stock Solution Stock NaCI solution Supporting Calculation |none required none required Mass of NaCI Volume of solution Molarity of stock solution 8,80% 256 MC Diluted Standards Standard mL of stockM Conductivity mS/cm Molarity Supporting calculation for molarity diluted to 100 mL moles/L 5.00 280,...
3. What is the Ka of an acid if a 0.250 M solution has a pH equal to 179. 4. The first-order decomposition of cyclopropane has a rate constant of 5.4 x 10-2 hr 1. If the initial concentration of cyclopropane is 0.150 M, what is the concentration of cyclopropane after 22 hr? 5. Draw an arrow in the direction the reaction will proceed if the following changes are made. I indicate if the K value will increase decrease or...
1.
2.
During 2013, a country reported that its real GDP increased by $3.0 billion. If the slope of its aggregate planned expenditure curve is 0.9, then which of the following might have led to the increase in real GDP? Exports increased by $0.3 billion. Exports decreased by $0.3 billion. Investment decreased by $0.3 billion. o Imports increased by $0.3 billion. Government expenditure on goods and services increased by $3 billion. During 2013, exports increase from $1.0 trillion to $1.5...
3 parts to this question...
please help
Predict/Calculate Problem 19.31 12 of 20 IP The point charges in the figure below have the following values: q1 = 1.9 C, q2 = 6.3 C, 43 = -0.91 pc. II Review Given that the distance d in the figure is 4.31 cm, find the magnitude of the net electrostatic force exerted on the point charge 91 Express your answer using two significant figures. 42 + VO AEC ? Friet = N Submit...
QUESTION 22 The Green Fildle increased its operating cycle from 139 days to 144 days while the cash cycle increased by 3 days. How have these period? Increased by 4 days B. Decreased by 10 days Increased by 2 days D. Decreased by 1 day E Decreased by 4 days
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