1solve it quick:

9. For the given reactions, A+B $\to$ Products, following data were obtained
Initial conc. (mol/L).  Initial conc. (mol/L) Initial rate [molL^​-1 s^-1]
 

[A]0	[B[0
0.1	0.2	0.05
0.2	0.2	0.10
0.1	0.1	0.05

(a) Write the rate law expression.    (b) Find the rate constant.


10. ⁶⁴Cu(T₅₀=12.8h) decays $\beta$ ^- emission (38%), $\beta$ ⁺ emission (19%) and electron capture (43%). Write the decay products and calculate partial half-lives for each of the decay processes.