Find the difference between two masses measured as 123.6 grams and 115.972 grams.Express the answer to the correct number of significant figures.
A)7.6 grams
B)7.63 grams
C)7.628 grams
D)8.0 grams
E)8 grams

Question

Quizplus · Accepted Answer

The difference between 123.6 grams and 115.972 grams is 7.628 grams, but since the least precise measurement (123.6 grams) is given to the tenths place, the difference should also be expressed to the tenths place, resulting in 7.6 grams.

Find the Difference Between Two Masses Measured as 123