Initial‑rate data at a certain temperature is given in the table for the reaction
C2H5Cl(g)⟶C2H4(g)+HCl(g)

[25]0() Initial rate (M/s)
0.100 0.875×10−30
0.200 1.75×10−30
0.300 2.63×10−30

Determine the value and units of the rate constant.