I’m stuck and 9310 is not the answer. i think it needs to be converted into a decimal between 1-10 .

.0931 is the answer

Explanation:

you need the equations to be equal, so basically you need both of them to add up to 9310 since 9.31 x 10^3 = 9310.

In order to do this you need to move the decimal point on 9.31 to the left by 2, which is .0931.

.0931 x 10^5 = 9310

0.0931

Explanation: since 9.31*10^3=9310 and since division is the opposite of multiplication then if you divide 9310 by 10^5 you get 0.0931

answer:

technetium is the most reactive. this is followed by silver. the least reactive out of these three elements is strontium.

it is b that is the answer.