Homework Answers
A mixture of two or more liquids can be separated by distillation. Distillation process contains heating the solvent/liquid mixture followed by condensation. In distillation setup the liquid vapour generated by heating the liquid to its boiling temperature & condensed by using water cool condenser.
Sea water salts can be isolated/separated by distillating the sea water.
Add Answer to:
In the distillation set-up, what is the purpose of the water-cooled condenser? Sea water is a...
35. In a distillation set up a) Cold water flows into the condenser from the elevated...
35. In a distillation set up a) Cold water flows into the condenser from the elevated end of the condenser and flows out of the lower end b) Plastic joint clips should not be used to hold the glass joints of the equipment together, equipment clamps are sufficient c) In a properly set up distillation experiment azeotropes will never occur. d) A and C alone e) None of the above 34. If a distillation is carried out under reduced pressure...
Sea water contains about 28.0g of NaCl per liter, what is the molarity? What is the...
Sea water contains about 28.0g of NaCl per liter, what is the molarity? What is the molarity of 5.30g of Na2CO, dissolved in 400.0mL solution? How many moles of Na,Co, are in 10.0L of a 2.00M solution?
B. Set up a system of equations for the following situation and then use MATLAB to solve the system Tank A contains 50 gallons of water in which 25 pounds of salt are dissolved. A second tank, B, con...
B. Set up a system of equations for the following situation and then use MATLAB to solve the system Tank A contains 50 gallons of water in which 25 pounds of salt are dissolved. A second tank, B, contains 50 gallons of pure water. Liquid is pumped in and out of the tanks at the rates shown in Figure 8.9. Derive the differential equations taerihe themuunds and B, respectively d tm in tanks A mixture pure water 3 gal/min 1...
What is the purpose of adding water after cooling the reaction mixture in this experiment? I...
What is the purpose of adding water after cooling the reaction mixture in this experiment? I understand it is to precipitate the product, but what exactly does water do in this, what impurity does it get rid of and how? Mesostillbenedibromide crude with KOH and triethyl glycol in a double elimination to produce Diphenylacetylene. Water is added after the reaction mixture is cooled. Then it is put through vacuum filtration, and further recrystallized with 7:3 etoac:water in a hot water...
A tank initially contains 500 gallons of water in which 40 pounds of salt is initially dissolved in the water
A tank initially contains 500 gallons of water in which 40 pounds of salt is initially dissolved in the water. Brine (a water-salt mixture) containing 0.4 pounds of salt per gallon flows into the tank at the rate of 5 gal/min, and the mixture (which is assumed to be perfectly mixed) flows out of the tank at the same rate of 5 gal/min. Let y(t) be the amount of salt (in pounds) in the tank at time t. a) Set up...
(1) De (2) Wh in water? (3) What is the purpose of washing with water after...
(1) De (2) Wh in water? (3) What is the purpose of washing with water after extraction with a reaction solvent? (4) What is the purpose of using a tared test tube? (5) W (6) What is the purpose of using a porous plate? (7) Why should a piece of weighing paper be put under the porous plate? (8) Why should you not touch the crystals with your fingers? fine: take up, wash with water, drying agent, absorb, mother liquor...
You don’t have to tell me purpose. just where in procedure for each technique. Section/Instructor SN2...
You
don’t have to tell me purpose. just where in procedure for each
technique.
Section/Instructor SN2 Pre-lab (20 points) Answer on a separate piece of paper 1. (6 pts.) What is the purpose of the following experimental techniques and where in the procedure is each used? a. Heating under reflux b. Simple distillation c. Water wash d. Addition of COLD NAOH e. Saturated NaCl solution f. Addition of anhydrous sodium sulfate SN2 Reaction Procedure Set-Up: 100 mL RBF: 11.1 g...
a) When setting up the reflux condenser, does it matter if the water flows into the...
a) When setting up the reflux condenser, does it matter
if the water flows into the bottom or the top of the condenser? If
so, does it have to flow into the bottom or the top, and why? If
not, why does it not matter?
Question pertains to the following reactions:
Reaction 2: Reduction NO2 NH4HCO2 NH2 + NO2 Pd/C NO2 NH2 NH2 m-methylaniline p-methylaniline 0-methylaniline ortho meta para Procedure for Reaction 2: 1) The mixture of ortho, meta, and...
When setting up the reflux condenser, does it matter if the water flows into the bottom...
When setting up the reflux condenser, does it matter if the
water flows into the bottom or the top of the condenser? If so,
does it have to flow into the bottom or the top, and why? If not,
why does it not matter?
Reaction 2: Reduction NO2 NH4HCO2 NH2 + NO2 Pd/C NO2 NH2 NH2 m-methylaniline p-methylaniline 0-methylaniline ortho meta para Procedure for Reaction 2: 1) The mixture of ortho, meta, and para isomers obtained from reaction 1 (2.4...
People commonly dissolve table salt (NaCL) into water that they are heating up. a) If you...
People commonly dissolve table salt (NaCL) into water that they are heating up. a) If you had a pot with 4 quarts of water (before heating) and add 1 teaspoon of salt, which is equivalent to 6.20g, what is the boiling point of the water? How much of an effect will that have on cooking pasta? (You can assume that NaCl fully dissociates. 1quart=0.946 L and Kb=0.51oCkg/mol for water) b) Would the cooking of pasta (based on boiling point) be...
35. In a distillation set up a) Cold water flows into the condenser from the elevated end of the condenser and flows out of the lower end b) Plastic joint clips should not be used to hold the glass joints of the equipment together, equipment clamps are sufficient c) In a properly set up distillation experiment azeotropes will never occur. d) A and C alone e) None of the above 34. If a distillation is carried out under reduced pressure...
Sea water contains about 28.0g of NaCl per liter, what is the molarity? What is the molarity of 5.30g of Na2CO, dissolved in 400.0mL solution? How many moles of Na,Co, are in 10.0L of a 2.00M solution?
B. Set up a system of equations for the following situation and then use MATLAB to solve the system Tank A contains 50 gallons of water in which 25 pounds of salt are dissolved. A second tank, B, contains 50 gallons of pure water. Liquid is pumped in and out of the tanks at the rates shown in Figure 8.9. Derive the differential equations taerihe themuunds and B, respectively d tm in tanks A mixture pure water 3 gal/min 1...
(1) De (2) Wh in water? (3) What is the purpose of washing with water after extraction with a reaction solvent? (4) What is the purpose of using a tared test tube? (5) W (6) What is the purpose of using a porous plate? (7) Why should a piece of weighing paper be put under the porous plate? (8) Why should you not touch the crystals with your fingers? fine: take up, wash with water, drying agent, absorb, mother liquor...
You
don’t have to tell me purpose. just where in procedure for each
technique.
Section/Instructor SN2 Pre-lab (20 points) Answer on a separate piece of paper 1. (6 pts.) What is the purpose of the following experimental techniques and where in the procedure is each used? a. Heating under reflux b. Simple distillation c. Water wash d. Addition of COLD NAOH e. Saturated NaCl solution f. Addition of anhydrous sodium sulfate SN2 Reaction Procedure Set-Up: 100 mL RBF: 11.1 g...
a) When setting up the reflux condenser, does it matter
if the water flows into the bottom or the top of the condenser? If
so, does it have to flow into the bottom or the top, and why? If
not, why does it not matter?
Question pertains to the following reactions:
Reaction 2: Reduction NO2 NH4HCO2 NH2 + NO2 Pd/C NO2 NH2 NH2 m-methylaniline p-methylaniline 0-methylaniline ortho meta para Procedure for Reaction 2: 1) The mixture of ortho, meta, and...
When setting up the reflux condenser, does it matter if the
water flows into the bottom or the top of the condenser? If so,
does it have to flow into the bottom or the top, and why? If not,
why does it not matter?
Reaction 2: Reduction NO2 NH4HCO2 NH2 + NO2 Pd/C NO2 NH2 NH2 m-methylaniline p-methylaniline 0-methylaniline ortho meta para Procedure for Reaction 2: 1) The mixture of ortho, meta, and para isomers obtained from reaction 1 (2.4...
Most questions answered within 3 hours.
-
If domestic savings are insufficient to finance domestic private
investment and exports are greater than imports,...
asked 1 minute from now -
Q.4.
Use the format in Exhibit 9-1 to compute the ending LIFO
inventory and cost of...
asked 4 minutes ago -
Discuss the different receiving and dispatch equipment required
for uploading and loading different types of material...
asked 9 minutes ago -
Which of the following is true for simultaneous testing?
a. Net specificity is greater than the...
asked 13 minutes ago -
Discuss the importance of homologous recombination and
transposition in natural horizontal gene transfer and evolution. Be...
asked 17 minutes ago -
Brittle material has the properties Sut = 30 kpsi and Suc = 90
kpsi. Using the...
asked 15 minutes ago -
*
write about Plastic recycling statistics ( Plastic recycling rate )
last two years , i...
asked 15 minutes ago -
The activation energy for a given reaction is 50.3 kJ/mol. If
the rate constant for the...
asked 1 hour ago -
An entomologist discovers a dung beetle rolling a ball of dung
along the ground, and decides...
asked 2 hours ago -
Humans have used horses for transportation for millions of
years. Therefore, they will use horses for...
asked 4 hours ago -
The following are the Jensen Corporation's unit costs of making
and selling an item at a...
asked 5 hours ago -
Does direct Medicare reimbursement of Advanced practice nurses
increase access to their services?
asked 6 hours ago