The activation energy for the decomposition of HI(g) toH₂(g) and I₂(g) is 186kJ/mol. The rateconstant at 555 Kelvin is 3.52 x 10^-7M^-1s^-1. What is the rateconstant at 645 Kelvin?

I already know the answer: 9.5 x 10^-5M^-1s^-1.

But when i try to work it out, i'm getting an answer of 9.8 x10^-5 M^-1s^-1

So i'm thinking it has something to do with my significantfigures.. but im not sure.

Please show me how to get the correct answer so i know what i'mdoing wrong.

Question

The activation energy for the decomposition of HI(g) toH₂(g) and I₂(g) is 186kJ/mol. The rateconstant at 555 Kelvin is 3.52 x 10^-7M^-1s^-1. What is the rateconstant at 645 Kelvin?

I already know the answer: 9.5 x 10^-5M^-1s^-1.

But when i try to work it out, i'm getting an answer of 9.8 x10^-5 M^-1s^-1

So i'm thinking it has something to do with my significantfigures.. but im not sure.

Please show me how to get the correct answer so i know what i'mdoing wrong.

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