One.
5 significant figures.
Rounded to two significant figures, 7.42 grams is approximately equal to 7.4 grams.
4 of them.
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.
When reporting a measurement of 15 grams, it has two significant figures, as both digits (1 and 5) are non-zero and contribute to its precision. Since the number is presented without any decimal point, it implies that the measurement is exact to the nearest whole gram. Therefore, you should report the weight of the object as having two significant figures.
5 significant figures.
Rounded to two significant figures, 7.42 grams is approximately equal to 7.4 grams.
The 3 and the 2.
There are 3 significant figures in '4.50g'
to .0251 grams or 2.51 x 10-2 grams
Three of them.
4 of them.
302.5 grams
302.05 grams
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.
When reporting a measurement of 15 grams, it has two significant figures, as both digits (1 and 5) are non-zero and contribute to its precision. Since the number is presented without any decimal point, it implies that the measurement is exact to the nearest whole gram. Therefore, you should report the weight of the object as having two significant figures.
4