2 significant figures.
Three - zeros between significant digits are significant.
20.009 has five significant digits. The g isn't a digit and probably stands for grams.
50.4 has three significant digits.
It is 13.2 grams.
Only 1004.
Three - zeros between significant digits are significant.
2 significant figures.
Three.
20.009 has five significant digits. The g isn't a digit and probably stands for grams.
There is 1 significant figure in this measurement.
Two
Three - all nonzero digits are significant.
50.4 has three significant digits.
143 g has three significant figures. The leading zeros are not considered significant.
24.305 grams/mole Magnesium X 5 moles = 121.525 grams. The correct number of significant digits depends on the values given in the question. Since there was only one value (5), and it refers to a perfect integer amount (5 moles). The question of the correct number of significant digits is undefined and depends entirely on the number of significant digits available for the Atomic Mass of Magnesium. Since there are 5 significant digits in the Atomic mass used, the answer would be correctly stated as 121.53 grams to 5 significant digits.
That measurement has 4 significant figures. It could also be stated as 1.580 x 10^-3.
43 g = 1.517 oz The formula to convert 43 grams to oz: 43 g* 1 oz 28.34952313 g = 1.516780364 oz