A reactant, A, decomposes according to a first order rate law. It takes 3.5 hours for...
A reactant, A, decomposes according to a first order rate law. It takes 3.5 hours for 25% of A to decay. (10) How many grams of A will be left over after 75 minutes, if there are 10.0 g initially?
Homework Answers
Add Answer to:
A reactant, A, decomposes according to a first order rate law.
It takes 3.5 hours for...
The rate law for a general reaction involving reactant A is given by the equation rate...
The rate law for a general reaction involving reactant A is given by the equation rate = k[A]?, where rate is the rate of the reaction, k is the rate constant, [A] is the concentration of reactant A, and the exponent 2 is the order of reaction for reactant A. What is the rate constant, k, if the reaction rate at 450.°C is 1.23x10-1 mol/L.s when the concentration of A is 0.220 mol/L? 1/Mos When heated to 75°C, 1 mole...
At a particular temperature, N2O5 decomposes according to a first-order rate law with a half-life of...
At a particular temperature, N2O5 decomposes according to a first-order rate law with a half-life of 3.0 s. If the initial concentration of N2O5 is 1.0 × 1016 molecules/cm3, what will be the concentration in molecules/cm3 after 11.5 s? A. 7.0 × 1014 B. 3.4 × 101 C. 1.0 × 1016 D. 2.0 × 1014 E.
first order reaction First-Order Reactions (35) Azomethane decomposes into nitrogen and ethane at high temperatures according...
first order reaction
First-Order Reactions (35) Azomethane decomposes into nitrogen and ethane at high temperatures according to the following equation: (CH3)2N2(g) — N2(g) + C2H6(g) The following data are obtained in an experiment: Time (h) [(CH3)2N2] 1.00 0.905 2.00 0.741 3.00 0.607 4.00 0.497 (a) By plotting the data, show that the reaction is first-order. (b) From the graph, determine k. (c) Using k, find the time in hours) that it takes decrease the concentration to 0.100 M. (d) Calculate...
A first order rate law has a rate constant of 0.0011 s-1. If the initial concentration...
A first order rate law has a rate constant of 0.0011 s-1. If the initial concentration is 4 M. How much is left after 9 minutes?
The integrated rate law allows chemists to predict the reactant concentration after a certain amount of...
The integrated rate law allows chemists to predict the reactant concentration after a certain amount of time, or the time it would take for a certain concentration to be reached. The integrated rate law for a first-order reaction is: [A]=[A]0e−kt Now say we are particularly interested in the time it would take for the concentration to become one-half of its initial value. Then we could substitute [A]02 for [A] and rearrange the equation to: t1/2=0.693k This equation calculates the time...
The rate constant for a first order reaction is 0.20 M-1s-1. The time it takes for...
The rate constant for a first order reaction is 0.20 M-1s-1. The time it takes for 0.50 M of reactant to halve is________ s 1.2 2.5 3.5 10
Integrated Rate Laws 1. The rate law expression for the reaction of sucrose in water C12H22O11 ...
Integrated Rate Laws 1. The rate law expression for the reaction of sucrose in water C12H22O11 + H2O ---> 2 C6H12O6 Is rate = k[C12H22O11]. a. What is the order with respect to each reactant? b. What is the overall order of the reaction? c. After 2.57 hours, 6.00g/L of C12H22O11 has decreased to 5.40g/L. Express these concentrations in units of M. d. What is the value and units for k given the information in part c? e. Knowing the...
Gaseous azomethane, CH3N=NCH3 , decomposes in a first-order reaction when heated: CH3N=NCH3(g) ---->N2 (g) + C2H6...
Gaseous azomethane, CH3N=NCH3 , decomposes in a first-order reaction when heated: CH3N=NCH3(g) ---->N2 (g) + C2H6 (g) The rate constant for this reaction at 600 K is 0.0216 . a. If the initial quantity of azomethane in the flask is 4.64 g, how much remains after 0.0510 hour? b. how many grams of N2?
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...
1a. Hydrogen iodide decomposes when heated, forming H2 (g) and I2 (g). The rate law for...
1a. Hydrogen iodide decomposes when heated, forming H2 (g) and I2 (g). The rate law for this reaction is -delta[HI]/delta t = k[HI]^2. At 443 °C, k=30.L/molxmin. If the initial HI (g) concentration is 5.5x10^-2 mol/L, what concentration of HI (g) will remain after 10. minutes? Concentration = ____ mol/L 1b. The decomposition of SO2Cl2 SO2Cl2 (g) ----> SO2 (g) + Cl2 (g) is first-order in SO2Cl2, and the reaction has a half-life of 245 minutes at 600 K. If...
The rate law for a general reaction involving reactant A is given by the equation rate = k[A]?, where rate is the rate of the reaction, k is the rate constant, [A] is the concentration of reactant A, and the exponent 2 is the order of reaction for reactant A. What is the rate constant, k, if the reaction rate at 450.°C is 1.23x10-1 mol/L.s when the concentration of A is 0.220 mol/L? 1/Mos When heated to 75°C, 1 mole...
first order reaction
First-Order Reactions (35) Azomethane decomposes into nitrogen and ethane at high temperatures according to the following equation: (CH3)2N2(g) — N2(g) + C2H6(g) The following data are obtained in an experiment: Time (h) [(CH3)2N2] 1.00 0.905 2.00 0.741 3.00 0.607 4.00 0.497 (a) By plotting the data, show that the reaction is first-order. (b) From the graph, determine k. (c) Using k, find the time in hours) that it takes decrease the concentration to 0.100 M. (d) Calculate...
Most questions answered within 3 hours.
-
Where is the error in this code sequence?
String s1 = "Hello";
String s2 = "ello";...
asked 10 months ago -
Financial data for Joel de Paris, Inc., for last year
follow:
Joel de Paris, Inc.
Balance...
asked 10 months ago -
Consider this reaction:
Al2(SO4)3 (aq)+ BaCl3
(aq) Al2Cl6 (aq)- +
3BaSO4(s) . What is the...
asked 10 months ago -
Suppose that Savneet is considering increasing her
recent random sample from 20 car rentals to 40...
asked 10 months ago -
Trucks arrive at an unloading terminal at an average rate of 120
per hour.
Trucks arrive...
asked 10 months ago -
Why are methanol and ethanol completely soluble in water while
octanol is not very little soluble....
asked 10 months ago -
A facilities manager at a university reads in a research report
that the mean amount of...
asked 10 months ago -
When the CuSO4 is rehydrated by adding water to the anhydrous
compound, is this an endothermic...
asked 10 months ago -
A ray of sunlight is passing from diamond into crown glass; the
angle of incidence is...
asked 10 months ago -
A block of mass 0.249 kg is placed on top of a light, vertical
spring of...
asked 10 months ago -
how do the kidneys compensate in the presences of acidosis
a) trigger hyperventilate
b) reserve acid...
asked 10 months ago -
Question 501 pts
The rental rate of capital to the firm increases. Which of the
following...
asked 10 months ago