Question

Express in scientific notation. Make sure your answer has the same number of significant figures as the starting value. (6.0 x 104) (3.1 x 10-1) = _____ 1.86 x 104 1.9 x 104 1.8 x 104

Answer 1

I believe the correct answer from the choices listed above is the second option. The expression (6.0 x 104) (3.1 x 10-1) is equal to 1.9 x 10^4. We only have two significant figures from the starting expression that is why we rounded of the product from 1.86 to 1.9.