Question

a chemical engineer must report the average volume of a certain pollutant produced by the plants under his supervision. here are the data he has been given by each plant: plant volume of pollutant lincoln 17.81 l south fork 0.678 l allegheny 2.00 l what average volume should the chemical engineer report? be sure your answer has the correct number of significant digits.

Explanation:

Step1: Find the sum of volumes

$17.81 + 0.678+2.00=20.488$ L

Step2: Divide by number of plants

There are 3 plants. So, $\frac{20.488}{3}\approx6.82933\cdots$ L

Step3: Determine significant - digits

The least number of decimal places among the original data is 2 (in 2.00 L). Rounding 6.82933\cdots to 2 decimal places gives 6.83 L

Answer:

6.83 L