Rank the following substances in order of increasing acid strength. (1 as least and 4 as most in acid strength) H₂Se HBr HI AsH3

A certain enzymatic reaction is found to be zero ordeth respect to the substrate being converted. The rate constant for the reaction is found to be 540 M s-1. The initial concentration of the substrate is 0.350 M. When the reaction is 50% complete, what is the rate of the reaction at that point? Give your answer in M s1 but do not include units in your answer.

A certain enzymatic reaction is found to be zero order with respect to the substrate being converted. The rate constant for the reaction is found to be 750 M s-1. The initial concentration of the substrate is 0.370 M. When the reaction is 50% complete, what is the rate of the reaction at that point? Give your answer in M s-1 but do not include units in your answer.

Use this data to determine the value of the rate constant. Ex #           [A] (M)          [B] (M)             Rate (M/hr) 1                  .240              .120                 2.00 2                  .120              .120                  .500 3                 .240               .0600              1.00 Question 4 options:   289 per hour   579 per hour   8.3 per hour   0.0144 per hour   69.4 per hour   .00346 per hour   0.060 per hour   0.0173 per hour   17 per hour   0.12 per hour

For a drug to be effective in treating an illnens, its levels in the bloodstream must be maintained for a period of time. One way to measure the level of a drug in the body is to measure its rate of appearance in the urine. The rate of excretion of penicillin is first order, with a half-life of about 30. min. If a person receives an injecction of 21 mg of penicillin at t- 0, how much penicillin remains in the body after 3.0 hours? mg

The rate of a certain reaction is given by the following rate law: rate =k| N,| H2 -k[N;][H+]° Use this information to answer the questions below. What is the reaction order in N,? What is the reaction order in H2? What is overall reaction order? At a certain concentration of N, and H2, the initial rate of reaction is 0.620 M / s. What would the initial rate of the reaction be if the concentration of N, were halved? Round M S your answer to 3 significant digits. The rate of the reaction is measured to be 24.0 M / s when [N2] = 1.5 M and [H2] = 0.16 M. Calculate the value of the k = |M -2 -1 •S rate constant. Round your answer to 2 significant digits.