a) The first-order decay constant for benzene was determined to be 0.33 per year. What is...
- a) The first-order decay constant for benzene was determined to be 0.33 per year. What is the half-life?
b) For an initial concentration of benzene of 1000 mg/L, what is the concentration after 25 years?
c) How long will it take for the benzene concentration to reach the Ontario Drinking Water Standard?
Homework Answers
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a) The first-order decay constant for benzene was determined to
be 0.33 per year. What is...
a)For a first order decay of [A], if 188 mg remains of an initial sample of...
a)For a first order decay of [A], if 188 mg remains of an initial sample of 1.3737 g after 516 min, what is the half life (in minutes)? b)The decay of carbon-14 is first order with a half life is 5576 years. How much of 1.4376 g sample would remain after 9190 years? c)The decay of cesium-135 is first order with a half life is 3.0 million years. How long (in years) would it take for a 0.9798 g sample...
1. For a first order decay of [A], if 525 mg remains of an initial sample...
1. For a first order decay of [A], if 525 mg remains of an initial sample of 1.3079 g after 361 min, what is the half life (in minutes)? 2. The decay of antimony-131 is first order with a half life is 23.03 minutes. How much of 1.4228 g sample would remain after 1.368 hours? 3. The decay of antimony-131 is first order with a half life is 23.03 minutes. How long (in minutes) would it take for a 0.8893...
The decay of chlorine in a water distribution system follows first-order decay with a rate constant...
The decay of chlorine in a water distribution system follows first-order decay with a rate constant of 0.4 d-1. If the concentration of chlorine in a well-mixed water storage tank is 2.0 mg/L at time zero, what will the concentration be at the end of two days? Assume no water flows out of the tank.
55) The rate constant for a first-order reaction is 0.54 s-1. What is the half-life of...
55) The rate constant for a first-order reaction is 0.54 s-1. What is the half-life of this reaction if the initial concentration is 0.33 M? 56) The rate constant for a zero-order reaction is 0.54 s-1. What is the half-life of this reaction if the initial concentration is 0.33 M? 57) The reaction that occurs in a Breathalyzer, a device used to determine the alcohol level in a person's bloodstream, is given below. If the rate of appearance of Cr2(SO4)3...
The decay of ozone residual in an aqueous solution has sometimes been described as a first order ...
The decay of ozone residual in an aqueous solution has sometimes been described as a first order reaction, as shown below: Given the following data please detemine the decay constant, k Residual Ozone Concentration (mg/L) 0.31 0.28 0.21 0.17 0.15 0.12 0.1 0.09 0.07 0.06 0.05 0.05 0.04 0.03 Decay time (min) 0 2 3 4 5 6 7 8 9 10 13 17 Do you think that this first order reaction is suitable for use? Please determine how long...
6. The first-order decomposition of H:O2 at -30 °C occurs with a rate constant of 0.0165...
6. The first-order decomposition of H:O2 at -30 °C occurs with a rate constant of 0.0165 s. If we start the reaction with10.0 mol/L H:0 1) What is the rate half-life, ty2 of the reaction? 2) What will be the residual concentration of H O, after 5 minutes? 3) What will be the initial reaction rate and the reaction rate at 5 minute? 4) How long will it take for the concentration of H 02 to decrease to 2.5mo/L?
The decomposition of SO2Cl2 is first order in SO, Cl, and has a rate constant of...
The decomposition of SO2Cl2 is first order in SO, Cl, and has a rate constant of 1.38x10-4 5-1 at a certain temperature. Part A What is the half-life for this reaction? ΟΙ ΑΣφ ? 11/2= Submit Request Answer Part B How long will it take for the concentration of SO, Cl, to decrease to 25% of its initial concentration? Express your answer using two significant figures. ΟΙ ΑΣΦ ? Part C If the initial concentration of SO, Cl, is 1.00...
1. A certain first order reaction has a rate constant of 0.036 min-1. How much of the reactant will remain if the reacti...
1. A certain first order reaction has a rate constant of 0.036 min-1. How much of the reactant will remain if the reaction is run for 2.5 hours and the initial concentration of the reactant is 0.31 M? 2. A certain first order reaction has a rate constant of 0.036 min-1. How much of the reactant will remain if the reaction is run for 2.5 hours and the initial concentration of the reactant is 0.31 M? 3. The rate constant...
3(12) The first-order reaction, 2N2O(g) + 2N2(g) + O2(g), has a rate constant of 0.76 s...
3(12) The first-order reaction, 2N2O(g) + 2N2(g) + O2(g), has a rate constant of 0.76 s at 1000K. (a) Calculate the half-life of this reaction at 1000K. (b) How long will it take for the concentration of N20 to fall to 25% of its initial value at 1000K (c) How long will it take for reaction to be 90% complete? (d) If the half-life of the same reaction is 29 min at 800K, what is the rate constant at 800K?...
The decomposition of SO,Cl, is first order in SO, Cl, and has a rate constant of...
The decomposition of SO,Cl, is first order in SO, Cl, and has a rate constant of 1.38x10 - at a certain temperature Part A What is the half-life for this reaction? 1 | ΑΣφ και ? $ Submit Het we Part How long wil it take for the concentration of SO,Cl to decrease to 25% of its initial concentration? Express your answer using two significant figures. VE ΑΣφ ? Submit Beavest A The decomposition of SO,Cl is first order in...
55) The rate constant for a first-order reaction is 0.54 s-1. What is the half-life of this reaction if the initial concentration is 0.33 M? 56) The rate constant for a zero-order reaction is 0.54 s-1. What is the half-life of this reaction if the initial concentration is 0.33 M? 57) The reaction that occurs in a Breathalyzer, a device used to determine the alcohol level in a person's bloodstream, is given below. If the rate of appearance of Cr2(SO4)3...
The decay of ozone residual in an aqueous solution has sometimes been described as a first order reaction, as shown below: Given the following data please detemine the decay constant, k Residual Ozone Concentration (mg/L) 0.31 0.28 0.21 0.17 0.15 0.12 0.1 0.09 0.07 0.06 0.05 0.05 0.04 0.03 Decay time (min) 0 2 3 4 5 6 7 8 9 10 13 17 Do you think that this first order reaction is suitable for use? Please determine how long...
6. The first-order decomposition of H:O2 at -30 °C occurs with a rate constant of 0.0165 s. If we start the reaction with10.0 mol/L H:0 1) What is the rate half-life, ty2 of the reaction? 2) What will be the residual concentration of H O, after 5 minutes? 3) What will be the initial reaction rate and the reaction rate at 5 minute? 4) How long will it take for the concentration of H 02 to decrease to 2.5mo/L?
The decomposition of SO2Cl2 is first order in SO, Cl, and has a rate constant of 1.38x10-4 5-1 at a certain temperature. Part A What is the half-life for this reaction? ΟΙ ΑΣφ ? 11/2= Submit Request Answer Part B How long will it take for the concentration of SO, Cl, to decrease to 25% of its initial concentration? Express your answer using two significant figures. ΟΙ ΑΣΦ ? Part C If the initial concentration of SO, Cl, is 1.00...
3(12) The first-order reaction, 2N2O(g) + 2N2(g) + O2(g), has a rate constant of 0.76 s at 1000K. (a) Calculate the half-life of this reaction at 1000K. (b) How long will it take for the concentration of N20 to fall to 25% of its initial value at 1000K (c) How long will it take for reaction to be 90% complete? (d) If the half-life of the same reaction is 29 min at 800K, what is the rate constant at 800K?...
The decomposition of SO,Cl, is first order in SO, Cl, and has a rate constant of 1.38x10 - at a certain temperature Part A What is the half-life for this reaction? 1 | ΑΣφ και ? $ Submit Het we Part How long wil it take for the concentration of SO,Cl to decrease to 25% of its initial concentration? Express your answer using two significant figures. VE ΑΣφ ? Submit Beavest A The decomposition of SO,Cl is first order in...
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