The following data are obtained for the initial rates of then reaction for A+2B+C----->2D+E

Experiment..[A].**...[C]..Initial rate**

1 1.40 1.40 1.00 R1

2 0.70 1.40 1.00 R2=(R1)/2

3 0.70 0.70 1.00 R3=(R2)/4

4 1.40 1.40 0.50 R4=16R3

5 0.70 0.70 0.50 R5=?

a)What is the order of the reaction with respect to A,B,C?

b)What is the value of R5 in terms of R1.