3 of them.
Rounded to two significant figures, 7.42 grams is approximately equal to 7.4 grams.
5 significant figures.
4 of them.
5
3 of them.
The rule when rounding off numbers is "If the first figure to be discarded is 5 or more then the previous figure is increased by 1". When 16490 is rounded off to 2 significant figures then the first figure to be discarded is 4. As this is less than 5 then the previous figure (6) is not increased by 1. 16490 to 2 significant figures is 16000.
2.000 = 2,000.000g 6.5 determines only one significant figure 2,000 + 6.5 + 47.546 = 2,054.046 which would be 2,054.0 In scientific notation that would equal 2.0540 * 103
Rounded to two significant figures, 7.42 grams is approximately equal to 7.4 grams.
Density = mass / volume = 12.9 grams / 8 cm3 = 1.6125 = rounded to one significant figure = 2 grams/cm3.
how do you figure out on paper that 16 ounces equal 453.6 grams
The 3 and the 2.
It is 13.2 grams.
5 significant figures.
Molecules of ammonia? Will assume so. 4.2 X 1025 molecules NH3 (1 mole NH3/6.022 X 1023)(17.034 grams/1 mole NH3) = 1188 grams of ammonia ===================( could call it 1200 grams NH3 for significant figure correctness )
There are 3 significant figures in '4.50g'
250 grams is used as an average figure for 1 cup.