By what factor would the rate increase if the temperature were increased 40 degree Celsius?

Question

if we assume that a chemical reaction doubles in rate for each 10 degree Celsius temperature increase

Answer 1

Since 40 C represents four 10-C cycles, the rate would double 4 times: 2 x 2 x 2 x 2 = 16 times.

Answer 2

2^(40/10) = 2^4 = 16

The rate of the chemical reaction would increase to 16 times the original rate.