Which response has the correct number of significant figures and units for the following mathematical operation? A) 2.192 $\times$ 10^-5 J/cal B) 2 $\times$ 10^-5 kcal C) 2.192$\times$ 10^-5 kcal D) 2.19 $\times$ 10^-5 kcal E) 2.2 $\times$ 10^-5 kcal

Question

Quizplus · Accepted Answer

The mathematical operation involves multiplication, so the number of significant figures in the final answer is determined by the number with the smallest number of significant figures in the calculation, which is 2.19. The units given in the options are all consistent with the given equation, so the correct unit is kcal. Therefore, the correct answer is 2.19 kcal, which is given by choice D.

Which Response Has the Correct Number of Significant Figures and Units