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(b) The sublimation of naphthalene was performed in a purification experiment. At the beginning of the...
2. Calculate the Rr value if the distance traveled by spot is given as 0.017em and...
2. Calculate the Rr value if the distance traveled by spot is given as 0.017em and the distance traveled by solvent front is given as Scm. (5pts.) oublimation is frontal colid phase tú gas phase.wo paring through liquid phase (b) The sublimation of naphthalene was performed in a purification experiment. At the beginning of the technique, 6.9g of impure naphthalene was obtained. After the purification technique was complete, 4.7g of naphthalene was recovered. Calculate the percent of naphthalene that was...
How would a mixture of naphthalene and benzophenone behave on a TLC plate with hexanes /...
How would a mixture of naphthalene and benzophenone behave on a TLC plate with hexanes / acetone as the eluent? Compare the polarity of these two compounds. Outline the most commonly used procedure for the purification of an impure solid material using the technique of recrystallization. Why is acetone such a popular solvent? Point out one drawback in terms of safety considerations. Your final product might be impure since you suspect decomposition might have occurred. When determining the melting point...
Point 20) A student has performed an experiment for projectile motion and tried to obtain the horizontal distance. Following is the data obtained during the experiment. Height is 1. 06 m Angle 0°...
Point 20) A student has performed an experiment for projectile motion and tried to obtain the horizontal distance. Following is the data obtained during the experiment. Height is 1. 06 m Angle 0° Total Range (m) 3.09 5.60 (a) Find the initial velocity (b) Find the theoretical projectile range value of 45° degree (c) Percent error of this experiment.
Point 20) A student has performed an experiment for projectile motion and tried to obtain the horizontal distance. Following is the...
7. Write the empirical formula for the following compounds. (a) naphthalene, CHE (b) pyrene, Chio (c)...
7. Write the empirical formula for the following compounds. (a) naphthalene, CHE (b) pyrene, Chio (c) N:02 (d) glucose, C.H1206 8. Complete and balance the following chemical equations for the complete combustion of hydrocarbons. (a) CsH(g) + O2(8) - (b) CsH10 (g) + 02 (8) - 9. Calculate the percent composition of the following compounds: (a) Na:0 (b) Na2CO3 10. Which of the following hydrocarbon contains greater percentage of carbon by mass? (a) naphthalene, CiH, and (b) anthracene, CH 10
2. The following second-order transfer function was obtained via an identification experiment performed in a small...
2. The following second-order transfer function was obtained via an identification experiment performed in a small neighborhood of a particular stead-state operating condition of a nonlinear process: G(s) = (3s +1)(6s1) (a 5pts.) Use direct synthesis method to design a controller. Assume that the desired closed-loop transfer function is first order and the desired closed-loop time constant is Td = 4. (b 5pts.) Suppose as a consequence of the nonlinearity, this process sometimes passes through a region of operation where...
Complete the purification table below for that group using the information supplied in Tables 1 &...
Complete the purification table below for that group using the information supplied in Tables 1 & 2. You may refer to the description in your lab manual on how to calculate these parameters and account for any dilutions. Sample Activity Total (ABS/min/mL) activity (ABS/min OR U) Protein Concentration (mg/mL) Total Protein (mg) Specific activity (ABS/min/mg OR U/mg) Fold Purification RP PPE [28 marks] Table 1: Triplicate absorbance data of Group A for the catechol assay of banana PPO after 2...
A student performed the experiment described in this module, using 5.00 mL of a 2.50% H2O2 solution with a density of 1.01 g mL-1
2. A student performed the experiment described in this module, using 5.00 mL of a 2.50% H2O2 solution with a density of 1.01 g mL-1. The water temperature was 24°C, and the barometric pressure in the labora- tory was 30.50 in. Hg. After the student immersed the yeast in the peroxide solution, she collected 43.70 mL of O2.(8) Calculate the number of moles of H2O2 reacting (9) Calculate the number of moles of collected O2 (10) Calculate the molar volume of O2...
a. Is distillation a purification or a characterization technique? Explain. b. Where the thermometer bulb should...
a. Is distillation a purification or a characterization technique? Explain. b. Where the thermometer bulb should be placed in order to measure the temperature of the hot vapor accurately during distillation? c. What is the purpose of the “packing” in a fractional distillation column? d. Why should a distillation flask never be more than ¾ full before starting a distillation? e. You are fractionally distilling 100 mL of a 1:1 solution of cyclohexane and toluene. After 2 mL has distilled...
chemical reaction was performed in a coffee cup calorimeter (the set up you experiment 2). The calorimeter containe...
chemical reaction was performed in a coffee cup calorimeter (the set up you experiment 2). The calorimeter contained 50.0 g of water at an initial temperature After the reaction was complete the temperature of the water was 27.0°C. Coleute a. Calculate the energy change, in joules (J), of the water. The specific heats is 4.18 J/gºC. ater at an initial temperature of 22.0°C. ules ("), of the water. The specific heat (S.H.) of water Page 2 UTOROURUAN b. Identify the...
Applicati 6. For a generic reaction A + B C, the following data are obtained Experiment...
Applicati 6. For a generic reaction A + B C, the following data are obtained Experiment Initial /AL. M Initial (e). M Initial rate (M/s 0.100 M 0.100 M 0.100 M 0.200 M 16.0 x 10 16.0 x 10 0200 M 0,100M 64.0 x10 64.0 x 10 0.100 M a. (5 pts) Based on the data, what is the rate law for the reaction? b. (5 pts) using experiment #2's data, solve for k. (5 pts) For experiment #2, after...
2. Calculate the Rr value if the distance traveled by spot is given as 0.017em and the distance traveled by solvent front is given as Scm. (5pts.) oublimation is frontal colid phase tú gas phase.wo paring through liquid phase (b) The sublimation of naphthalene was performed in a purification experiment. At the beginning of the technique, 6.9g of impure naphthalene was obtained. After the purification technique was complete, 4.7g of naphthalene was recovered. Calculate the percent of naphthalene that was...
Point 20) A student has performed an experiment for projectile motion and tried to obtain the horizontal distance. Following is the data obtained during the experiment. Height is 1. 06 m Angle 0° Total Range (m) 3.09 5.60 (a) Find the initial velocity (b) Find the theoretical projectile range value of 45° degree (c) Percent error of this experiment.
Point 20) A student has performed an experiment for projectile motion and tried to obtain the horizontal distance. Following is the...
7. Write the empirical formula for the following compounds. (a) naphthalene, CHE (b) pyrene, Chio (c) N:02 (d) glucose, C.H1206 8. Complete and balance the following chemical equations for the complete combustion of hydrocarbons. (a) CsH(g) + O2(8) - (b) CsH10 (g) + 02 (8) - 9. Calculate the percent composition of the following compounds: (a) Na:0 (b) Na2CO3 10. Which of the following hydrocarbon contains greater percentage of carbon by mass? (a) naphthalene, CiH, and (b) anthracene, CH 10
2. The following second-order transfer function was obtained via an identification experiment performed in a small neighborhood of a particular stead-state operating condition of a nonlinear process: G(s) = (3s +1)(6s1) (a 5pts.) Use direct synthesis method to design a controller. Assume that the desired closed-loop transfer function is first order and the desired closed-loop time constant is Td = 4. (b 5pts.) Suppose as a consequence of the nonlinearity, this process sometimes passes through a region of operation where...
Complete the purification table below for that group using the information supplied in Tables 1 & 2. You may refer to the description in your lab manual on how to calculate these parameters and account for any dilutions. Sample Activity Total (ABS/min/mL) activity (ABS/min OR U) Protein Concentration (mg/mL) Total Protein (mg) Specific activity (ABS/min/mg OR U/mg) Fold Purification RP PPE [28 marks] Table 1: Triplicate absorbance data of Group A for the catechol assay of banana PPO after 2...
chemical reaction was performed in a coffee cup calorimeter (the set up you experiment 2). The calorimeter contained 50.0 g of water at an initial temperature After the reaction was complete the temperature of the water was 27.0°C. Coleute a. Calculate the energy change, in joules (J), of the water. The specific heats is 4.18 J/gºC. ater at an initial temperature of 22.0°C. ules ("), of the water. The specific heat (S.H.) of water Page 2 UTOROURUAN b. Identify the...
Applicati 6. For a generic reaction A + B C, the following data are obtained Experiment Initial /AL. M Initial (e). M Initial rate (M/s 0.100 M 0.100 M 0.100 M 0.200 M 16.0 x 10 16.0 x 10 0200 M 0,100M 64.0 x10 64.0 x 10 0.100 M a. (5 pts) Based on the data, what is the rate law for the reaction? b. (5 pts) using experiment #2's data, solve for k. (5 pts) For experiment #2, after...
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