OrganicHomework Answers
Ans 6
The total weight of tea bags = 3.3 x 10 = 33 grams
Mass of caffeine isolated = 1.43 grams
percent yield of caffeine = (caffiene mass / total tea mass) x 100
= ( 1.43 / 33 ) x 100
= 4.33 %
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Organic
6. You isolated 1.43 grams of caffeine from 10 tea bags. If each tea bag...
Organic chemistry d 1.43 grams of caffeine from 10 tea bags. If each tea bag weighs...
Organic chemistry
d 1.43 grams of caffeine from 10 tea bags. If each tea bag weighs 3.3 grams, what is the percent yield caffeine in the tea. 7. If the density of a certain liquid material is 1.27 gyml, caleulate the volume of the material that would be equivalent to 10 grams of the materials. The melting point of a pure compound is known to be 110-111°. Describe the melting behavior expected if this compound is contaminated with a 10...
If each bag of Lipton black tea contains 55 mg of caffeine, what is the maximum...
If each bag of Lipton black tea contains 55 mg of caffeine, what is the maximum amount of caffeine that you could extract from one using our procedure? Assume one bag and 40mL of tea-water at the end of initial solid-liquid extraction. The partition coefficient (K) for caffeine in methylene chloride is 7.2. How much caffeine could be extracted using our procedure if we had used ethyl acetate (K = 2.0) instead of methylene chloride? Explain why the amount does...
Introduction: The technique used to separate an organic compound from a mixture of compounds is called...
Introduction: The technique used to separate an organic compound from a mixture of compounds is called Extraction. Extraction process selectively dissolves one or more of the mixture compounds into a suitable solvent. The solution of these dissolved compounds is referred to as the Extract. Here the organic solvent dichloromethane is used to extract caffeine from an aqueous extract of tea leaves because caffeine is more soluble in dichloromethane (140 mg/ml) than it is in water (22 mg/ml). However, there are...
1.) What percent recovery could be expected if 1.000 g of caffeine was initially dissolved in...
1.) What percent recovery could be expected if 1.000 g of
caffeine was initially dissolved in 120 mL of water and then
extracted with a single 80 mL portion of ethyl acetate?
2.) What percent recovery could be expected if 1.000 g of
caffeine was initially dissolved in 120 mL of water and then
extracted as per the protocol given in the lab manual?
3.) Percent recovery and percent yield are occasionally used as
if they are interchangeable terms. They...
Can someone please help? Thank you. ATOM ECONOMY: The traditional way of evaluating the efficiency of...
Can someone please help? Thank you.
ATOM ECONOMY: The traditional way of evaluating the efficiency of an organic reaction is to determine the percent yield of the reaction. Most organic chemists would be quite pleased with a reaction with >90% isolated yield of the target molecule. On the other hand, a yield of 30% is typically considered to be a disappointment. As a review of the concept of theoretical yield and percent yield, let's consider the following Sy2 reaction CH3CH2CH2CH2OH...
Need to change to grams 5. When 3.3 g of C Hio is combined with 0.50...
Need to change to grams 5. When 3.3 g of C Hio is combined with 0.50 mL of liquid bromine, 3.5 g of C H1oBrs is isolated. What is the percent yield for this reaction? The density of liquid bromine is 13.1 g/mL. Ans. 45% yield I mol Bre ?p=m 0.50 mL Brex pala CH10(0) + 3 Brz () - CH10Bro (0 3.59 3.39 5.4. Br o C: 12.011 7(12.011) +10(1.000)+6079.904) 572.5813 Hi 1.008 Br. 79.904 6. CAH (1)+ 3...
Activity 10 How Much Product Will My Reaction Yield? 37 6. Carly the chemistry student performs...
Activity 10 How Much Product Will My Reaction Yield? 37 6. Carly the chemistry student performs an experiment with vinegar (active ingredient acetic acid, CH, COOH) and baking soda (NaHCO). Her professor asks her to place varying amounts of baking soda and vinegar into scalable plastic sandwich bags, quickly seal the bags, and observe the reaction. The balanced chemical equation for the reaction is given here. NaHCO, (aq) + CH,COOH(ag) - CO,(8) + H,O(l) + NaCH COO(ag) a) Use limiting...
Please answer questions from Q1 to Q5. Thank you. Solve the following questions; show all your...
Please answer questions from Q1 to Q5. Thank you.
Solve the following questions; show all your work details. NO credits will be added if short answers are submitted. Q1) Automobiles air bags are inflated by nitrogen gas generated by the rapid decomposition of sodium azide, NaN3: NaN3 (8) ► Na(s) + N2 © (NOT balanced) If an air bag has a volume of 50.0 L and is to be filled with nitrogen gas at 0.828 atm and 26°C, how many...
The JustOneMore Company produces and sells organic plain potato chips. The one-pound family size bag of...
The JustOneMore Company produces and
sells organic plain potato chips. The one-pound family size bag of
chips has two direct materials – potatoes and packaging.
JustOneMore is preparing budgets for the second quarter
ending June 30, 2019. For each requirement below prepare
budgets by month for April, May, and June, and a total budget for
the quarter.
Parts 1-4 are included, ONLY
parts 5-8 are needed!
The previous year’s sales (2018) for the corresponding period
were:
April
60,000 bags
May ...
Name Section 6. A sample of gas occupies 500 mL at STP. What volume will the...
Name Section 6. A sample of gas occupies 500 mL at STP. What volume will the gas occupy at 85.00 and 525 torr 7. A gas canister can tolerate internal pressures up to 210 atmospheres. If a 2.0L canister holding 3.5 moles of gas is heated to 1350°C, will the canister explode? 8. Calculate the density of 0.625 g of carbon dioxide at 26.32C and 1.03 atm. 9. Calculate the number of grams of hydrogen sulfide gas, HS, in a...
Organic chemistry
d 1.43 grams of caffeine from 10 tea bags. If each tea bag weighs 3.3 grams, what is the percent yield caffeine in the tea. 7. If the density of a certain liquid material is 1.27 gyml, caleulate the volume of the material that would be equivalent to 10 grams of the materials. The melting point of a pure compound is known to be 110-111°. Describe the melting behavior expected if this compound is contaminated with a 10...
1.) What percent recovery could be expected if 1.000 g of
caffeine was initially dissolved in 120 mL of water and then
extracted with a single 80 mL portion of ethyl acetate?
2.) What percent recovery could be expected if 1.000 g of
caffeine was initially dissolved in 120 mL of water and then
extracted as per the protocol given in the lab manual?
3.) Percent recovery and percent yield are occasionally used as
if they are interchangeable terms. They...
Can someone please help? Thank you.
ATOM ECONOMY: The traditional way of evaluating the efficiency of an organic reaction is to determine the percent yield of the reaction. Most organic chemists would be quite pleased with a reaction with >90% isolated yield of the target molecule. On the other hand, a yield of 30% is typically considered to be a disappointment. As a review of the concept of theoretical yield and percent yield, let's consider the following Sy2 reaction CH3CH2CH2CH2OH...
Need to change to grams 5. When 3.3 g of C Hio is combined with 0.50 mL of liquid bromine, 3.5 g of C H1oBrs is isolated. What is the percent yield for this reaction? The density of liquid bromine is 13.1 g/mL. Ans. 45% yield I mol Bre ?p=m 0.50 mL Brex pala CH10(0) + 3 Brz () - CH10Bro (0 3.59 3.39 5.4. Br o C: 12.011 7(12.011) +10(1.000)+6079.904) 572.5813 Hi 1.008 Br. 79.904 6. CAH (1)+ 3...
Activity 10 How Much Product Will My Reaction Yield? 37 6. Carly the chemistry student performs an experiment with vinegar (active ingredient acetic acid, CH, COOH) and baking soda (NaHCO). Her professor asks her to place varying amounts of baking soda and vinegar into scalable plastic sandwich bags, quickly seal the bags, and observe the reaction. The balanced chemical equation for the reaction is given here. NaHCO, (aq) + CH,COOH(ag) - CO,(8) + H,O(l) + NaCH COO(ag) a) Use limiting...
Please answer questions from Q1 to Q5. Thank you.
Solve the following questions; show all your work details. NO credits will be added if short answers are submitted. Q1) Automobiles air bags are inflated by nitrogen gas generated by the rapid decomposition of sodium azide, NaN3: NaN3 (8) ► Na(s) + N2 © (NOT balanced) If an air bag has a volume of 50.0 L and is to be filled with nitrogen gas at 0.828 atm and 26°C, how many...
The JustOneMore Company produces and
sells organic plain potato chips. The one-pound family size bag of
chips has two direct materials – potatoes and packaging.
JustOneMore is preparing budgets for the second quarter
ending June 30, 2019. For each requirement below prepare
budgets by month for April, May, and June, and a total budget for
the quarter.
Parts 1-4 are included, ONLY
parts 5-8 are needed!
The previous year’s sales (2018) for the corresponding period
were:
April
60,000 bags
May ...
Name Section 6. A sample of gas occupies 500 mL at STP. What volume will the gas occupy at 85.00 and 525 torr 7. A gas canister can tolerate internal pressures up to 210 atmospheres. If a 2.0L canister holding 3.5 moles of gas is heated to 1350°C, will the canister explode? 8. Calculate the density of 0.625 g of carbon dioxide at 26.32C and 1.03 atm. 9. Calculate the number of grams of hydrogen sulfide gas, HS, in a...
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