Question

answer the following problem using the correct number of sig figs (decimal places)30.5 g - 16.82 g + 41.07 g + 85.219 g =

Answer 1

The answer is 139.969 g.

Step-by-step explanation:

When adding or subtracting numbers, round the result to the same number of decimal places as the number with the fewest decimal places. In this case, the number with the fewest decimal places is 85.219 g, which has three decimal places. Therefore, the final answer should be rounded to three decimal places.

Performing the calculations, we have:

30.5 g - 16.82 g + 41.07 g + 85.219 g = 139.969 g

Rounding to three decimal places, the final answer is 139.969 g.