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Question 1 Status: Tries remaining: 2 | Points possible: 1.00 The reaction is a type of Choose.. that Saponifica...
which are soaps and which are not soaps? Status: Tries remaining: 2 Points possible: 1.00 The cleaning ability of s...
which are soaps and which are not soaps?
Status: Tries remaining: 2 Points possible: 1.00 The cleaning ability of soap is based on its structure. Which structures represent compounds that can be used as soaps? m ✓ Choose... Not a soap Soap Choose.. Choose... Choose... Choose.. CHECK
Question 6 Status: Tries remaining: 3 | Points possible: 1.00 Suppose in an experiment to determine...
Question 6 Status: Tries remaining: 3 | Points possible: 1.00 Suppose in an experiment to determine the amount of sodium hypochlorite in bleach, 0.0000460 mol KIO3 were titrated with an unknown solution of Na S,0a and the endpoint was reached after 17.80 mL. How many moles of Na,S203 did this require? Answer: CHECK Question 8 Status: Tries remaining: 3 | Points possible: 1.00 A 25.00 mL solution containing 0.035 M sodium acetate is titrated witha 0.098 M solution of HCl....
Question 5 Status: Tries remaining: 3 Points possible: 1.00 Calculate the molarity of a solution prepared...
Question 5 Status: Tries remaining: 3 Points possible: 1.00 Calculate the molarity of a solution prepared by dissolving 0.187 g of KHP in enough water to make 125 mL of solution. The formula of KHP is KC H504 Answer: CHECK Question 6 Status: Tries remaining: 3 1 Points possible: 1.00 A beaker containing 0.400 g KHP was titrated with NaOH solution. The pale pink end point was reached after 18.55 mL of NaOH solution was dispensed. What is the molarity...
Question 8 Status: Tries remaining: 21 Points possible: 1.00 Suppose you measure the absorbance of a...
Question 8 Status: Tries remaining: 21 Points possible: 1.00 Suppose you measure the absorbance of a yellow dye solution in a 1.00 cm cuvette. cm what is The absorbance of the solution at 427 nm is 0.46. If the molar absorptivity of yellow dye at 427 nm is 27400 M the concentration of the solution? Answer: Question 9 Status: Tries remaining: 2 Points possible: 1.00 If you plot the absorbance measurements of solutions vs. their concentrations, what is the slope...
Status: Tries remaining: 2 Points possible: 1.00 If the density of aluminum is 2.70 g/mL and...
Status: Tries remaining: 2 Points possible: 1.00 If the density of aluminum is 2.70 g/mL and there are 453.9 grams in a pound, what is the volume (in ml) of an aluminum bar that weighs 13.0 lbs? Answer: CHECK
Question 5 Status: Tries remaining: 3 | Points possible: 1.00 Calculate the molarity of a solution...
Question 5 Status: Tries remaining: 3 | Points possible: 1.00 Calculate the molarity of a solution prepared by dissolving 0.185 g of KHP in enough water to make 125 mL of solution. The formula of KHP is KC3H304. Answer:
Question 7 Status: Tries remaining: 31 Points possible: 1.00 What is the net ionic equation for...
Question 7 Status: Tries remaining: 31 Points possible: 1.00 What is the net ionic equation for the reaction between KC,H,O, and NaOH? Select one: O C:H:0,- (aq) + K+ (aq) +Na+ (aq) + OH(aq) + (aq) + Na+ (aq) + CH,0,(aq) + H2O(1) C,H,O, (aq) + OH (aq) +CH,0,?- (aq) + H2O(1) O O CHOK (aq) + NaOH (aq) + K+ (aq) +Na* (aq) + C4H10 (aq) + HO (1) O C,H,O, K (aq) + NaOH(aq) — KNaC,H,O,? (aq) +...
drop down #1: hydrochloric acid, sodium hydroxide, or sodium chloride drop down #2: protonate, emulsify or...
drop down #1: hydrochloric acid, sodium hydroxide, or sodium
chloride
drop down #2: protonate, emulsify or precipitate
drop down #3: pH, mass or density
Question 3 Status: Tries remaining: 2| Points possible: 1.00 After the reaction of base with the fat or oil to form a soap, add a saturated solution of This addition Choose... of the solution so the soap floats on top the soap as it increases the helps Choose... Choose.. CHECK
Question 6 Status: Tries remaining: 3 Points possible: 1.00 A beaker containing 0.400 g KHP was...
Question 6 Status: Tries remaining: 3 Points possible: 1.00 A beaker containing 0.400 g KHP was titrated with NaOH solution. The pale pink end point was reached after 19.55 mL of NaOH solution was dispensed. What is the molarity of the NaOH solution? Answer:
Question 8 Tries remaining 1 Points out of 1.00 P Flag question Balance the following half...
Question 8 Tries remaining 1 Points out of 1.00 P Flag question Balance the following half reaction in basic conditions. Then, indicate the coefficients for H2O and OH for the balanced half reaction, and which side they appear on. NO, NO Multiple tries are permitted, however, 1/4 (25%) point will be deducted for each incorrect submission H20. Choose. OH Choose Check
which are soaps and which are not soaps?
Status: Tries remaining: 2 Points possible: 1.00 The cleaning ability of soap is based on its structure. Which structures represent compounds that can be used as soaps? m ✓ Choose... Not a soap Soap Choose.. Choose... Choose... Choose.. CHECK
Question 6 Status: Tries remaining: 3 | Points possible: 1.00 Suppose in an experiment to determine the amount of sodium hypochlorite in bleach, 0.0000460 mol KIO3 were titrated with an unknown solution of Na S,0a and the endpoint was reached after 17.80 mL. How many moles of Na,S203 did this require? Answer: CHECK Question 8 Status: Tries remaining: 3 | Points possible: 1.00 A 25.00 mL solution containing 0.035 M sodium acetate is titrated witha 0.098 M solution of HCl....
Question 5 Status: Tries remaining: 3 Points possible: 1.00 Calculate the molarity of a solution prepared by dissolving 0.187 g of KHP in enough water to make 125 mL of solution. The formula of KHP is KC H504 Answer: CHECK Question 6 Status: Tries remaining: 3 1 Points possible: 1.00 A beaker containing 0.400 g KHP was titrated with NaOH solution. The pale pink end point was reached after 18.55 mL of NaOH solution was dispensed. What is the molarity...
Question 8 Status: Tries remaining: 21 Points possible: 1.00 Suppose you measure the absorbance of a yellow dye solution in a 1.00 cm cuvette. cm what is The absorbance of the solution at 427 nm is 0.46. If the molar absorptivity of yellow dye at 427 nm is 27400 M the concentration of the solution? Answer: Question 9 Status: Tries remaining: 2 Points possible: 1.00 If you plot the absorbance measurements of solutions vs. their concentrations, what is the slope...
Status: Tries remaining: 2 Points possible: 1.00 If the density of aluminum is 2.70 g/mL and there are 453.9 grams in a pound, what is the volume (in ml) of an aluminum bar that weighs 13.0 lbs? Answer: CHECK
Question 5 Status: Tries remaining: 3 | Points possible: 1.00 Calculate the molarity of a solution prepared by dissolving 0.185 g of KHP in enough water to make 125 mL of solution. The formula of KHP is KC3H304. Answer:
Question 7 Status: Tries remaining: 31 Points possible: 1.00 What is the net ionic equation for the reaction between KC,H,O, and NaOH? Select one: O C:H:0,- (aq) + K+ (aq) +Na+ (aq) + OH(aq) + (aq) + Na+ (aq) + CH,0,(aq) + H2O(1) C,H,O, (aq) + OH (aq) +CH,0,?- (aq) + H2O(1) O O CHOK (aq) + NaOH (aq) + K+ (aq) +Na* (aq) + C4H10 (aq) + HO (1) O C,H,O, K (aq) + NaOH(aq) — KNaC,H,O,? (aq) +...
drop down #1: hydrochloric acid, sodium hydroxide, or sodium
chloride
drop down #2: protonate, emulsify or precipitate
drop down #3: pH, mass or density
Question 3 Status: Tries remaining: 2| Points possible: 1.00 After the reaction of base with the fat or oil to form a soap, add a saturated solution of This addition Choose... of the solution so the soap floats on top the soap as it increases the helps Choose... Choose.. CHECK
Question 6 Status: Tries remaining: 3 Points possible: 1.00 A beaker containing 0.400 g KHP was titrated with NaOH solution. The pale pink end point was reached after 19.55 mL of NaOH solution was dispensed. What is the molarity of the NaOH solution? Answer:
Question 8 Tries remaining 1 Points out of 1.00 P Flag question Balance the following half reaction in basic conditions. Then, indicate the coefficients for H2O and OH for the balanced half reaction, and which side they appear on. NO, NO Multiple tries are permitted, however, 1/4 (25%) point will be deducted for each incorrect submission H20. Choose. OH Choose Check
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