10.1+25.01+5.08
There are 3 significant figures in '4.50g'
There are four significant figures in 33050. The trailing zero is not significant because there is no decimal. There would be five significant figures in 33050. If we were to remove the last zero in the number, we would alter the value of the number. Had the number been 3305.0, then there would have been four significant digits.
4
There are 4 significant digits
grams
302.05 grams
5
302.05 grams
There are 4 significant figures in this problem.
4 of them.
five. 30.002
The significant figures are the ones which convey meaningful information about the measurement beyond the magnitude. Saying that a sample weighs .0000039 grams is better stated as 3.9 x 10^-6 grams or perhaps 3.9 micrograms. That's two significant figures. All the zeroes are not significant.
I would use grams because grams would give you more significant figures for the measurement than kilograms
5 significant figures.
There are 3 significant figures in '4.50g'
The 3 and the 2.
Rounded to two significant figures, 7.42 grams is approximately equal to 7.4 grams.