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09 Homework . Unanswered The specific rotation of L-dopa in water is -39.5. The specific rotation...
5.41 Predict the value for the specific rotation of the following compound. Explain your answer. -OH...
5.41 Predict the value for the specific rotation of the following compound. Explain your answer. -OH НО. 5.42 The specific rotation of (S)-2-butanol is +13.5. If 1.00 g of its enantiomer is dissolved in 10.0 mL of ethanol and placed in a sample cell with a length of 1.00 dm, what observed rotation do you expect? 5.43 The specific rotation of l-alanine in water (at 25°C) is +2.8. A chemist prepared a mixture of l- alanine and its enantiomer, and...
PRINTtR VERSION イBACK NEXT Practice Problem 05.43 Your answer is incorrect. Try again. The specific rotation...
PRINTtR VERSION イBACK NEXT Practice Problem 05.43 Your answer is incorrect. Try again. The specific rotation of L-alanine in water (at 25°C) is -2.8. A chemist prepared a mixture of L-alanine and its enantiomer, and 3.50 g of the mixture was dissolved in 10.0 ml of water. This solution was then placed in a sample cell with a pathlength of 10.0 cm and the observed rotation was-0.38. Calculate the % ee of the mixture. the tolerance is +/-2% SHOW HINT...
10) Which of the following statements is (are) true for the compound (R)-2-butanol? A) This compound...
10) Which of the following statements is (are) true for the compound (R)-2-butanol? A) This compound is chiral. B) This compound is optically active. C) This compound has an enantiomer D) all of the above E) none of the above 11) Predict the specific rotation of the compound shown. CH нс A) It is impossible to predict; it must be determined experimentally. B) Because both asymmetric centers are R, the compound is dextrorotatory. C) Because both asymmetric centers are S,...
Please help with pre-lab questions. Pre-Lab Questions: 1. A sample of 2-butanol has a specific rotation...
Please help with pre-lab questions.
Pre-Lab Questions: 1. A sample of 2-butanol has a specific rotation of +3.25. Determine the optical purity (%ee) and percent composition of this sample (see Mohrig section 17.4). The specific rotation of pure (+)-2-butanol is +13.0°. 2. The equation for the formation of the diastereomeric salts is shown in the background information (performed in Part A of the procedure). Write this chemical equation in your notebook, then ALSO write a balanced equation for the formation...
2+ 3 Blood plasma (p 1.03 g/mL) contains 2.5 mmol/L of Ca ions. Assuming that all...
2+ 3 Blood plasma (p 1.03 g/mL) contains 2.5 mmol/L of Ca ions. Assuming that all calcium cations are present as calcium chloride, calculate the mass percentage of CaCl2 in plasmia in mg%. [Answer: 26.9 mg%] 4. The mass percentage of iron as an element in blood is 50 mg%. Calculate the mass of iron cations in 5 kg of blood. [Answer: 2.5 g] prep a SorutioI 0.Which mass of water should be added to 75 g of a 5%...
rates of chemical reactions Plz help!! how do I find specific rate constant k, 1/T, In...
rates of chemical reactions
Plz help!! how do I find specific rate constant k, 1/T, In
K
thank you
Rates of Chemical Reactions: Report Form Rate Law Summary: (a) From your measurements, what are the reaction orders with respect to each of the three reactants H;O; HOO (b) What is the rate expression (rate law) for the uncatalyzed reaction? Rate = K LT-] [H202) (c) What is the total reaction order? 2 3. Effect of Temperature on the Reaction Rate...
1. The Molar Solubility of Ca(10), in Pure Water Temperature of the saturated solution of calcium...
1. The Molar Solubility of Ca(10), in Pure Water Temperature of the saturated solution of calcium iodate: Volume (or mass) of saturated calcium iodate solution titrated: 25 °C 10 ml (or g) Dat Trial 1 Trial 2 Trial 3 Volume of Na S o titrant Final buret reading Initial buret reading ml mL mL mL Net volume of Na So 26.621 mL 30.019 mL Calculated concentration of 10 Standardized 0.05 M sodium thiosulfate (Na,8,0,) solution (10,51(E) - TIL 10 mols.0.2...
QUESTION 19 Which compound listed below has the smallest molar solubility in water? CdCO3 (Ksp =...
QUESTION 19 Which compound listed below has the smallest molar solubility in water? CdCO3 (Ksp = 5.2 x 10-12) ОА. OB. Ca(OH)2 (Ksp = 2,5 x 10-14) OCAgI (Ksp = 8.3 x 10-17 OD.CaF2 (Ksp = 3.9 x 10-11) OE ZnCO3 (Ksp = 1.4 x 10-11) QUESTION 20 Click Save and Submit to save and submit Chek Saue Al Anser to save alters ve here to search Remaining Time: 1 hour, 05 minutes, 02 seconds. * Question Completion Status: QUESTION...
86.bg PART TWO: DATA AND RESULTS Metal: Aluminum (Cal = 0.217 cal/qE)-specific granity Data Item Trial...
86.bg PART TWO: DATA AND RESULTS Metal: Aluminum (Cal = 0.217 cal/qE)-specific granity Data Item Trial 1 Trial 2 1. Mass of metal 50.og 2. Mass of calorimeter 3. Mass of calorimeter and water 124.49 4. Mass of water 120g 5. Initial temperature of water 24°C 23°C 6. Initial temperature of the metal 25°C 75°C 7. Final temperature of the mixture 21.11°C 152.6 g 8. Calculation of the heat energy gained by the water, Q Trial Onc: Trial Two: see...
reallt need help with the questions which are numbered aswelll helo with the last four cells...
reallt need help with the questions which are numbered aswelll
helo with the last four cells on part IV data tabel
Part II Prediction: 4) What is the final temperature of a mixture containing -50 g of hot water (about 90 °C) and -50 g of water at room temperature? 5) What happens to the final temperature if the mass of the cold water is halved while that of the hot water is increased while maintaining a total mixture of...
5.41 Predict the value for the specific rotation of the following compound. Explain your answer. -OH НО. 5.42 The specific rotation of (S)-2-butanol is +13.5. If 1.00 g of its enantiomer is dissolved in 10.0 mL of ethanol and placed in a sample cell with a length of 1.00 dm, what observed rotation do you expect? 5.43 The specific rotation of l-alanine in water (at 25°C) is +2.8. A chemist prepared a mixture of l- alanine and its enantiomer, and...
PRINTtR VERSION イBACK NEXT Practice Problem 05.43 Your answer is incorrect. Try again. The specific rotation of L-alanine in water (at 25°C) is -2.8. A chemist prepared a mixture of L-alanine and its enantiomer, and 3.50 g of the mixture was dissolved in 10.0 ml of water. This solution was then placed in a sample cell with a pathlength of 10.0 cm and the observed rotation was-0.38. Calculate the % ee of the mixture. the tolerance is +/-2% SHOW HINT...
10) Which of the following statements is (are) true for the compound (R)-2-butanol? A) This compound is chiral. B) This compound is optically active. C) This compound has an enantiomer D) all of the above E) none of the above 11) Predict the specific rotation of the compound shown. CH нс A) It is impossible to predict; it must be determined experimentally. B) Because both asymmetric centers are R, the compound is dextrorotatory. C) Because both asymmetric centers are S,...
Please help with pre-lab questions.
Pre-Lab Questions: 1. A sample of 2-butanol has a specific rotation of +3.25. Determine the optical purity (%ee) and percent composition of this sample (see Mohrig section 17.4). The specific rotation of pure (+)-2-butanol is +13.0°. 2. The equation for the formation of the diastereomeric salts is shown in the background information (performed in Part A of the procedure). Write this chemical equation in your notebook, then ALSO write a balanced equation for the formation...
2+ 3 Blood plasma (p 1.03 g/mL) contains 2.5 mmol/L of Ca ions. Assuming that all calcium cations are present as calcium chloride, calculate the mass percentage of CaCl2 in plasmia in mg%. [Answer: 26.9 mg%] 4. The mass percentage of iron as an element in blood is 50 mg%. Calculate the mass of iron cations in 5 kg of blood. [Answer: 2.5 g] prep a SorutioI 0.Which mass of water should be added to 75 g of a 5%...
rates of chemical reactions
Plz help!! how do I find specific rate constant k, 1/T, In
K
thank you
Rates of Chemical Reactions: Report Form Rate Law Summary: (a) From your measurements, what are the reaction orders with respect to each of the three reactants H;O; HOO (b) What is the rate expression (rate law) for the uncatalyzed reaction? Rate = K LT-] [H202) (c) What is the total reaction order? 2 3. Effect of Temperature on the Reaction Rate...
1. The Molar Solubility of Ca(10), in Pure Water Temperature of the saturated solution of calcium iodate: Volume (or mass) of saturated calcium iodate solution titrated: 25 °C 10 ml (or g) Dat Trial 1 Trial 2 Trial 3 Volume of Na S o titrant Final buret reading Initial buret reading ml mL mL mL Net volume of Na So 26.621 mL 30.019 mL Calculated concentration of 10 Standardized 0.05 M sodium thiosulfate (Na,8,0,) solution (10,51(E) - TIL 10 mols.0.2...
QUESTION 19 Which compound listed below has the smallest molar solubility in water? CdCO3 (Ksp = 5.2 x 10-12) ОА. OB. Ca(OH)2 (Ksp = 2,5 x 10-14) OCAgI (Ksp = 8.3 x 10-17 OD.CaF2 (Ksp = 3.9 x 10-11) OE ZnCO3 (Ksp = 1.4 x 10-11) QUESTION 20 Click Save and Submit to save and submit Chek Saue Al Anser to save alters ve here to search Remaining Time: 1 hour, 05 minutes, 02 seconds. * Question Completion Status: QUESTION...
86.bg PART TWO: DATA AND RESULTS Metal: Aluminum (Cal = 0.217 cal/qE)-specific granity Data Item Trial 1 Trial 2 1. Mass of metal 50.og 2. Mass of calorimeter 3. Mass of calorimeter and water 124.49 4. Mass of water 120g 5. Initial temperature of water 24°C 23°C 6. Initial temperature of the metal 25°C 75°C 7. Final temperature of the mixture 21.11°C 152.6 g 8. Calculation of the heat energy gained by the water, Q Trial Onc: Trial Two: see...
reallt need help with the questions which are numbered aswelll
helo with the last four cells on part IV data tabel
Part II Prediction: 4) What is the final temperature of a mixture containing -50 g of hot water (about 90 °C) and -50 g of water at room temperature? 5) What happens to the final temperature if the mass of the cold water is halved while that of the hot water is increased while maintaining a total mixture of...
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