The nuclide 96Nb decays by a first-order process with a rate constant of 2.96 × 10–2 h–1. How long will it take for 86.0% of the initial amount of 96Nb to be consumed?
Let initial amount is A0 = 100
Then remaining amount At = 100 - 86 = 14
K * t = 2.303 * log (A0/At)
2.96*10^-2 * t = 2.303 * log (100/14)
t = 66.43 hours ...Answer
The nuclide 96Nb decays by a first-order process with a rate constant of 2.96 × 10–2...
5. Given the reaction OCT (aq) + I (aq) → OT (aq) + Cl(aq) tienis Rate = k1110017. Th The rate law for this reaction is Rate =k! . The overall reaction order and the [OH"] order with respect to OH are A) 2 and -1. B) O and -1. C) 0 and 1. D) 2 and 1. E) 1 and -1. 6. The following data were obtained for the hypothetical reaction 2A + B → products, [A] (M) [B]...
The reaction, aA products, is a first order reaction with a rate constant of 1.248 x 10-4 s-1 . a. How long (in seconds) does it take for the initial amount of A to decrease by 30%? b. What fraction of reactant remains after 30 minutes? c. What is the half-life for the reaction? d. How long does it take for the initial amount of reactant to decrease by 87.5%?
13. A. The decomposition of hydrogen peroxide is a first-order process with a rate constant of 1.06 x 10 min. How long will it take for the concentration of H2O2 to drop from 0.0200 M to 0.0120 M? <1 min 7.55 min 481 min 4550 min 31 400 min The rate constant is 5.4 C. D. E
The reaction C H → 2C H is first order with rate constant k = 1.89 x 10-1 s-1. 48 24 a. Suppose that [C4H8]0 = 0.265 M. How long (in seconds) will it take for the concentration of C4H8 to decrease to 45.0% of its initial value
The decomposition of SO2Cl2 is first order in SO2Cl2 and has a rate constant of 1.48×10−4 s−1 at a certain temperature. How long will it take for the concentration of SO2Cl2 to decrease to 25% of its initial concentration? If the initial concentration of SO2Cl2 is 1.00 M, how long will it take for the concentration to decrease to 0.76 M ? If the initial concentration of SO2Cl2 is 0.175 M , what is the concentration of SO2Cl2 after 210...
A certain reactant disappears by a first order reaction that has a rate constant K= 3.5x10^-3 s-1. If the initial concentration of the reactant is 0.500 M , how long will it take for the concentration to drop to 0.200 M ? 4. A certain reactant disappears by a first-order reaction that has a rate constant k=3.5 x 10 s. If the initial concentration of the reactant is 0.500 M, how long will it take for the concentration to drop...
The decomposition of SO2Cl2 is first order in SO2Cl2 and has a rate constant of 1.44×10−4 s−1 at a certain temperature. A) How long will it take for the concentration of SO2Cl2 to decrease to 25% of its initial concentration? Express your answer using two significant figures. B)If the initial concentration of SO2Cl2 is 1.00 M, how long will it take for the concentration to decrease to 0.74 M ? Express your answer using two significant figures. Please explain step...
Question 3 1 pts The rate constant, k, of the first order reaction A B +C is k = 8.62 x 10-35-1. If the initial concentration of A is 2.74 M, how long will it take for the concentration of A to fall below 0.32 M? Give your answer to one decimal place in MINUTES (do not input the units). For example, if your answer is 8.956 minutes, enter 9.0 Question 4 1 pts The rate constant, k, of the...
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 SO2Cl2 and has a rate constant of 1.42 * 10 - 4 s - 1 at a certain temperature. a. What is the half-life for this reaction? b. How long will it take for the concentration of SO2Cl2 to decrease to 25% of its initial concentration? c. If the initial concentration of SO2Cl2 is 1.00 M, how long will it take for the concentration to decrease to 0.78 M? d. If the...