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4. A student needs to crystallize 500 mg of a crude product using the microscale one-...
A student monitored the reaction progress of the reduction of 4-Nitrobenzaldehyde to 4-Nitrobenzyl alcohol using TLC....
A student monitored the reaction progress of the reduction of
4-Nitrobenzaldehyde to 4-Nitrobenzyl alcohol using TLC. 30% ethyl
acetate in petroleum ether was used as the elution solvent. TLC
plates available in the laboratory were coated with the common
absorbent silica gel (SiO2.xH2O) which
contains polar hydroxyl (OH-) groups.
c. The crude product moves slower
than the starting material with the mobile
phase in the TLC plate. Briefly
explain a possible reason for the
observation based on the chemical
structures...
Problem 4 (15 Points) An oil refining company can purchase crude oil from 2 countries: Kuwait and Canada. One barrel of crude oil yields useable gasoline, jet fuel, and lubricant, in barrels, accordi...
Problem 4 (15 Points) An oil refining company can purchase crude oil from 2 countries: Kuwait and Canada. One barrel of crude oil yields useable gasoline, jet fuel, and lubricant, in barrels, according to the following table (there is a 10% loss due to waste in the refining process): Product Yield (in barrels) Kuwait Canada 0.3 0.4 0.2 0.4 0.2 0.3 Gasoline Jet Fuel Lubricant Kuwait can offer up to 9000 barrels of crude oil at a cost of $20...
Synthesis of crude product. 1. Combine reagents (following either step A or B, depending on the...
Synthesis of crude product.
1. Combine reagents (following either step A or B, depending on the
benzaldehyde assigned to
you). It is best not to use a brand-new conical vial right out
of the package, as the surface is not rough enough to help induce
precipitation.
A. In a 5-mL conical vial, combine 0.15 g of 3-nitrobenzaldehyde
(151.121 g/mol), 0.12 mL
of acetophenone (120.151 g/mol; d = 1.03 g/mL), and 0.80 mL of
95% ethanol.
OR
B. Pipette 0.13 mL...
1)100 mg:1,000 mg::1 mL:X mL. Determine the value of X. 2) 100 mg:200 mg::1 mL:X mL....
1)100 mg:1,000 mg::1 mL:X mL. Determine the value of X. 2) 100 mg:200 mg::1 mL:X mL. Determine the value of X. 3) Emily weights 54 lbs. If the doctor orders a medication at 20 mg/kg/dose with two doses per day, how much would she receive for each dose? 4) The order reads give 200 mg of amoxicillin. The label reads 100 mg/2ml. How many milliliters will you give? 5) If a drug is ordered at 10 mg/kg/day, how much would...
EQUL 404: Studying Chemical Equilibris and Applying Le Chateliers Pricipale Using Microscale Lechnique Post-Laboratory Questions (Use...
EQUL 404: Studying Chemical Equilibris and Applying Le Chateliers Pricipale Using Microscale Lechnique Post-Laboratory Questions (Use the spaces provided for the answers and additional paper if necessary.) 1. Experience teaches us that most solids are more soluble in warm water than in cold water. Does the sol ubility of Mg(OH), fit this pattern? Briefly explain (2) The student draws some of the blue solution into the bulb ola Beral pipet. The pipet is placed, bulb down, in a hot-water bath....
1) If a drug is ordered at 10 mg/kg/day, how much would a 20 lb patient...
1) If a drug is ordered at 10 mg/kg/day, how much would a 20 lb patient need each day? 2) A mother calls your office and says that she does not know how many teaspoons to give her child becasue the directions on the medication bottle read "Give 15 ml". How many teaspoons does that equal? 3) A drug label indicates you should add 3.4 ml diluent to powder containing one gram of antibiotic. The resulting solution will provide 250...
For a physics lab assignment, a student needs to create a solenoid using copper wire with...
For a physics lab assignment, a student needs to create a solenoid using copper wire with diameter d = 0.500 mm. The resistance of the solenoid needs to be 3.10 Ω and the magnetic field of the solenoid with a current of 2.50 A should be 5.10 ✕ 10−2 T. Assume the resistance does not change significantly with temperature, and the radius of the solenoid is 1.00 cm. (Use ρ = 1.70 ✕ 10−8 Ω · m for the resistivity...
Calculate Life Insurance Needs Directions: Calculate the life insurance needs in each scenario below using the...
Calculate Life Insurance Needs Directions: Calculate the life insurance needs in each scenario below using the appropriate method-7/70 method, 50% method or single parent method. 1. A woman who earns a salary of $62,000 decides to purchase a life insurance policy. She is married with two children and wants to be able to cover their college tuition. The children are 13 and 15 years old. Therefore, she decided to use the 7/70 method. How much should her life insurance policy...
Find the crude yield and percent yield of trans-4-methoxycinnamic acid Find the crude and percent yield...
Find the crude yield and percent yield of trans-4-methoxycinnamic
acid
Find the crude and percent yield of ethyl trans-4
methoxycinnamic acid
Synthesis of trans-4-methoxycinnamic acid 0.585 gused To a 25 mL round-bottom flask equipped with a stir bar, add 1 mL of pyridine (Caution! Pyridine is toxic!) followed by 320 mg of 4-methoxybenzaldehyde, 320mg 10. 200ML 585 mg of malonic acid and 33 mg of B-alanine. Clamp the round-bottom flask Ucdi over a stir plate in a sand bath and...
When Olivia was a college student, she saved $500 each year with an interest rate of 6%. 4 years later, Olivia got a job and saved $2000 each year with an interest rate of 5%. After 5 years,...
When Olivia was a college student, she saved $500 each year with an interest rate of 6%. 4 years later, Olivia got a job and saved $2000 each year with an interest rate of 5%. After 5 years, how much is there in her deposit?
When Olivia was a college student, she saved $500 each year with an interest rate of 6%. 4 years later, Olivia got a job and saved $2000 each year with an interest rate of 5%....
A student monitored the reaction progress of the reduction of
4-Nitrobenzaldehyde to 4-Nitrobenzyl alcohol using TLC. 30% ethyl
acetate in petroleum ether was used as the elution solvent. TLC
plates available in the laboratory were coated with the common
absorbent silica gel (SiO2.xH2O) which
contains polar hydroxyl (OH-) groups.
c. The crude product moves slower
than the starting material with the mobile
phase in the TLC plate. Briefly
explain a possible reason for the
observation based on the chemical
structures...
Problem 4 (15 Points) An oil refining company can purchase crude oil from 2 countries: Kuwait and Canada. One barrel of crude oil yields useable gasoline, jet fuel, and lubricant, in barrels, according to the following table (there is a 10% loss due to waste in the refining process): Product Yield (in barrels) Kuwait Canada 0.3 0.4 0.2 0.4 0.2 0.3 Gasoline Jet Fuel Lubricant Kuwait can offer up to 9000 barrels of crude oil at a cost of $20...
Synthesis of crude product.
1. Combine reagents (following either step A or B, depending on the
benzaldehyde assigned to
you). It is best not to use a brand-new conical vial right out
of the package, as the surface is not rough enough to help induce
precipitation.
A. In a 5-mL conical vial, combine 0.15 g of 3-nitrobenzaldehyde
(151.121 g/mol), 0.12 mL
of acetophenone (120.151 g/mol; d = 1.03 g/mL), and 0.80 mL of
95% ethanol.
OR
B. Pipette 0.13 mL...
EQUL 404: Studying Chemical Equilibris and Applying Le Chateliers Pricipale Using Microscale Lechnique Post-Laboratory Questions (Use the spaces provided for the answers and additional paper if necessary.) 1. Experience teaches us that most solids are more soluble in warm water than in cold water. Does the sol ubility of Mg(OH), fit this pattern? Briefly explain (2) The student draws some of the blue solution into the bulb ola Beral pipet. The pipet is placed, bulb down, in a hot-water bath....
Calculate Life Insurance Needs Directions: Calculate the life insurance needs in each scenario below using the appropriate method-7/70 method, 50% method or single parent method. 1. A woman who earns a salary of $62,000 decides to purchase a life insurance policy. She is married with two children and wants to be able to cover their college tuition. The children are 13 and 15 years old. Therefore, she decided to use the 7/70 method. How much should her life insurance policy...
Find the crude yield and percent yield of trans-4-methoxycinnamic
acid
Find the crude and percent yield of ethyl trans-4
methoxycinnamic acid
Synthesis of trans-4-methoxycinnamic acid 0.585 gused To a 25 mL round-bottom flask equipped with a stir bar, add 1 mL of pyridine (Caution! Pyridine is toxic!) followed by 320 mg of 4-methoxybenzaldehyde, 320mg 10. 200ML 585 mg of malonic acid and 33 mg of B-alanine. Clamp the round-bottom flask Ucdi over a stir plate in a sand bath and...
When Olivia was a college student, she saved $500 each year with an interest rate of 6%. 4 years later, Olivia got a job and saved $2000 each year with an interest rate of 5%. After 5 years, how much is there in her deposit?
When Olivia was a college student, she saved $500 each year with an interest rate of 6%. 4 years later, Olivia got a job and saved $2000 each year with an interest rate of 5%....
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