Question

A colorimeter is an instrument used for chemical analysis by comparing a liquid’s color with standard colors. In an experiment, a scientist used two calorimeters and noted the readings. The first colorimeter showed consistent readings that were five points lower than the actual reading. The second colorimeter provided readings that were the same as the actual reading. Which two statements are implications of these readings?

Answer 1

Step-by-step explanation:

The readings from the two colorimeters have the following implications:

1. The first colorimeter consistently showed readings that were five points lower than the actual reading. This suggests that there is a systematic error or calibration issue with this colorimeter. A systematic error is an error that occurs consistently and affects all measurements in the same way. In this case, the colorimeter consistently underestimates the color intensity by five points. To obtain accurate results, the scientist should adjust the readings from this colorimeter by adding five points to compensate for the systematic error.

2. The second colorimeter provided readings that were the same as the actual reading. This implies that the second colorimeter is properly calibrated and does not have any systematic errors. It provides accurate readings without any need for adjustments.

In summary, the first colorimeter consistently underestimates the color intensity by five points, while the second colorimeter provides accurate readings. To obtain accurate results, the scientist should adjust the readings from the first colorimeter by adding five points.

Answer 2

The first colorimeter is consistent but is not accurate; with an error of -5. It cannot be used to provide accurate reading.

U can conclude the second colorimeter to be accurate.