The first order reaction 3A→2B+C has rate constant 0.538 s−1. If the initial concentration of A is 0.867 mol L−1, what is the half-life of the reaction, in seconds? Remember to use correct significant figures in your answer.

Who is better, messi or cristiano, i need this for a chemistry class. asap

You encounter a solution that is acidic and you decide to test it by adding a small amount of a strong acid. the ph lowers slightly but is approximately unchanged, and still remains acidic. what can you say about the solution? a. it is a buffer solution. b. it is not a buffer solution it is a strong acid solution. d. the solution has been neutralized. e. the solution has excess acid present

Use the table to identify the phase and phase changes of the elements under the given conditions. write the name of the substance, phase, or phase change