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Dr || For Cu diffusing in Al the preexponential constart 0o = 1.5x105 m²% and the...
511 for cu diffaring in Al the preexponential constant Do - 1.5x10-5 m²% and the activation Thergy is 126,000 Jlnol...
511 for cu diffaring in Al the preexponential constant Do - 1.5x10-5 m²% and the activation Thergy is 126,000 Jlnole At some temperature the diffusion constant for cu diffusing in Al is 5.9x1015 6%. Find that temperature, inoc.
0.950 M-15-1 at 508'T. a. Calculate the activation energy and Arrhenius preexponential factor for this reaction....
0.950 M-15-1 at 508'T. a. Calculate the activation energy and Arrhenius preexponential factor for this reaction. b. What is the value of the rate constant at 400°C? P29 The melting of double-strand DNA into two single strands can be initiated using temperature-jump methods. Derive the expression for the T-jump relaxation time for the following equilibrium involving double-strand (DS) and single-strand (SS) DNA: DS > 25 Skr P30 Consider the reaction
Help Hayden Lee (080481087) Clcse Remaining Time: 13.31:35 The diffusion coefficient of hydrogen in a particular al...
Help Hayden Lee (080481087) Clcse Remaining Time: 13.31:35 The diffusion coefficient of hydrogen in a particular alloy at 1,800°C is 6.025x1016m2is. The activation energy for diffusion of hydrogen in the alloy is 220 klmol. Find the temperature-independent pre-exponential D, for hydrogen in the alloy. Remember the gas constant is 831motK O 6.8E-10 m is O 2.1E-10 m2/s O 9.7E-10 mis O 3.8E-10 m2Is
1. Some standard reduction potentials at 25 C are: E 0.337 V for Cu* (a) 2e- Cu(s) E" =-0.1 26 V ...
1. Some standard reduction potentials at 25 C are: E 0.337 V for Cu* (a) 2e- Cu(s) E" =-0.1 26 V for Phẩ (aq) + 2e → Pb(s) Eo-0.763 V for Zn2 (a)2e-> Zn(s) Predict the voltage of each of the following voltaic cells: a. Cu | Cu0.010 M)I Cu (0.010M) | Cu c. Zn | Zn2 (0010 M) Cu(0.010 M) | Cu b. Pb | Pb (0.010 M)1 Cu (0.010 MCud. Zn | Zn3 (0.010 M) 11 Pb (0.010...
Im supposed to use this table to find it - A steel plate contains 0.62% C...
Im supposed to use this table to find it
- A steel plate contains 0.62% C and the surface is to be carburized to make it more wear resistant. If the carburization takes place such that the surface composition is 2.2% C, how long will it take to have 1.4% C at a depth of 0.75 mm into the plate at a temperature of 450 °C? (Use the data found in tables of Ch. 5 to solve the problem. Diffusing...
F,-mg 980 m/s-32.2 s dr dt Ve dv dr x-Acos(cot + φ) 2rt tan U-(12)kx object...
F,-mg 980 m/s-32.2 s dr dt Ve dv dr x-Acos(cot + φ) 2rt tan U-(12)kx object on a spring of constant 45 N/m is undergoing simple harmonic motion. The maximum potential energsy onsider a time when the speed of the object is 5.0 m's. At that time, find is 55 J. C a) the potential energy of the system. b) the acceleration of the object
Question: Procedure Separation and Identification of Pb2 (aq), Fe (aq), Al(a), and Cu Note: Tests should...
Question:
Procedure Separation and Identification of Pb2 (aq), Fe (aq), Al(a), and Cu Note: Tests should be performed concurrently on the known and the unknown solutions. Volumes are approximate. All work excepting the centrifugation should be done in the fume hood 1. To about 2. mL of your sample in a test tube, add 5 drops (-0.2 mL) of 6 M HCl(a). Mix well and centrifuge. Decant the clear liquid into a clean test tube and save it for Step...
1. The drawing shows an ideal gas confined to a cylinder by a massless piston that...
1. The drawing shows an ideal gas confined to a cylinder by a
massless piston that is attached to an ideal spring. Outside the
cylinder is a vacuum. The cross-sectional area of the piston is A =
2.50 × 10-3 m2. The initial pressure, volume, and temperature of
the gas are, respectively, P0, V0 = 6.00 × 10-4 m3 and T0 = 273 K,
and the spring is initially stretched by an amount x0 = 0.092 m
with respect to...
1) 2) 3) 2NO(g) +Cl2 (g) → NOCI (8) Experiment concentration of NO (M) 0.09 0.045...
1)
2)
3)
2NO(g) +Cl2 (g) → NOCI (8) Experiment concentration of NO (M) 0.09 0.045 0.045 concentration of Cl2(M) Rate (M/s) 0.01 3.40 x 10-4 8.50 x 10-5 0.04 3.40 x 10-4 0.01 What is the reaction order with respect to NO to Cl2 ? overall reaction order ? the reaction order with respect to reaction order ? what is the rate constant * All orders are integers * Rate constant: Please report 3 significant figures. Numbers only, No...
Physical chemistry quanta, matter and change Pronlblem 89.6 (Atkins, 2th) 89.5* M. Cyfert, et al. (Int....
Physical chemistry quanta, matter and change Pronlblem
89.6 (Atkins, 2th)
89.5* M. Cyfert, et al. (Int. J. Chem. Kinet. 28, 103 (1996)) examined the oxidation of tris(1,10-phenanthroline) iron (II) by periodate in aqueous solution, a reaction which shows autocatalytic behaviour. To assess the kinetic salt effect, they measured rate constants at a variety of concentrations of Na SO, far in excess of reactant concentrations and reported the following data: Na SO4]/(molkg') 0.0125 0.005 0.2 0.15 0.025 0.1 0.05 k/(dm3/2 mol-1/2...
511 for cu diffaring in Al the preexponential constant Do - 1.5x10-5 m²% and the activation Thergy is 126,000 Jlnole At some temperature the diffusion constant for cu diffusing in Al is 5.9x1015 6%. Find that temperature, inoc.
0.950 M-15-1 at 508'T. a. Calculate the activation energy and Arrhenius preexponential factor for this reaction. b. What is the value of the rate constant at 400°C? P29 The melting of double-strand DNA into two single strands can be initiated using temperature-jump methods. Derive the expression for the T-jump relaxation time for the following equilibrium involving double-strand (DS) and single-strand (SS) DNA: DS > 25 Skr P30 Consider the reaction
Help Hayden Lee (080481087) Clcse Remaining Time: 13.31:35 The diffusion coefficient of hydrogen in a particular alloy at 1,800°C is 6.025x1016m2is. The activation energy for diffusion of hydrogen in the alloy is 220 klmol. Find the temperature-independent pre-exponential D, for hydrogen in the alloy. Remember the gas constant is 831motK O 6.8E-10 m is O 2.1E-10 m2/s O 9.7E-10 mis O 3.8E-10 m2Is
1. Some standard reduction potentials at 25 C are: E 0.337 V for Cu* (a) 2e- Cu(s) E" =-0.1 26 V for Phẩ (aq) + 2e → Pb(s) Eo-0.763 V for Zn2 (a)2e-> Zn(s) Predict the voltage of each of the following voltaic cells: a. Cu | Cu0.010 M)I Cu (0.010M) | Cu c. Zn | Zn2 (0010 M) Cu(0.010 M) | Cu b. Pb | Pb (0.010 M)1 Cu (0.010 MCud. Zn | Zn3 (0.010 M) 11 Pb (0.010...
Im supposed to use this table to find it
- A steel plate contains 0.62% C and the surface is to be carburized to make it more wear resistant. If the carburization takes place such that the surface composition is 2.2% C, how long will it take to have 1.4% C at a depth of 0.75 mm into the plate at a temperature of 450 °C? (Use the data found in tables of Ch. 5 to solve the problem. Diffusing...
F,-mg 980 m/s-32.2 s dr dt Ve dv dr x-Acos(cot + φ) 2rt tan U-(12)kx object on a spring of constant 45 N/m is undergoing simple harmonic motion. The maximum potential energsy onsider a time when the speed of the object is 5.0 m's. At that time, find is 55 J. C a) the potential energy of the system. b) the acceleration of the object
Question:
Procedure Separation and Identification of Pb2 (aq), Fe (aq), Al(a), and Cu Note: Tests should be performed concurrently on the known and the unknown solutions. Volumes are approximate. All work excepting the centrifugation should be done in the fume hood 1. To about 2. mL of your sample in a test tube, add 5 drops (-0.2 mL) of 6 M HCl(a). Mix well and centrifuge. Decant the clear liquid into a clean test tube and save it for Step...
1. The drawing shows an ideal gas confined to a cylinder by a
massless piston that is attached to an ideal spring. Outside the
cylinder is a vacuum. The cross-sectional area of the piston is A =
2.50 × 10-3 m2. The initial pressure, volume, and temperature of
the gas are, respectively, P0, V0 = 6.00 × 10-4 m3 and T0 = 273 K,
and the spring is initially stretched by an amount x0 = 0.092 m
with respect to...
1)
2)
3)
2NO(g) +Cl2 (g) → NOCI (8) Experiment concentration of NO (M) 0.09 0.045 0.045 concentration of Cl2(M) Rate (M/s) 0.01 3.40 x 10-4 8.50 x 10-5 0.04 3.40 x 10-4 0.01 What is the reaction order with respect to NO to Cl2 ? overall reaction order ? the reaction order with respect to reaction order ? what is the rate constant * All orders are integers * Rate constant: Please report 3 significant figures. Numbers only, No...
Physical chemistry quanta, matter and change Pronlblem
89.6 (Atkins, 2th)
89.5* M. Cyfert, et al. (Int. J. Chem. Kinet. 28, 103 (1996)) examined the oxidation of tris(1,10-phenanthroline) iron (II) by periodate in aqueous solution, a reaction which shows autocatalytic behaviour. To assess the kinetic salt effect, they measured rate constants at a variety of concentrations of Na SO, far in excess of reactant concentrations and reported the following data: Na SO4]/(molkg') 0.0125 0.005 0.2 0.15 0.025 0.1 0.05 k/(dm3/2 mol-1/2...
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