The 3 and the 2.
5 significant figures.
Rounded to two significant figures, 7.42 grams is approximately equal to 7.4 grams.
There are 3 significant figures in '4.50g'
302.05 grams
302.5 grams
4 of them.
Three of them.
0,000 000 32 has only two significant figures (3 and 2).
32
The sum of 334.540 grams, when considering significant figures, remains 334.540 grams. This is because the number has five significant figures, and there are no additional numbers to round or adjust. Therefore, the result is already expressed in the correct significant figure.
4
5