There are infinitely ma,y possible answers. For example 0.0002389 or 1654000000.
145.992 using only four significant figures is 146.0
21,600 using only four significant figures is still 21,600.
The number 6,051.00 has six significant digits. The number 6,051 has only four significant digits.
There are 4 significant figures in 0.0032. Seems to be only 2 significant figures in this number.
There are four significant figures in 0.0001 mol.
It depends on the number of significant figures from two numbers you are multiplying. But when multiplying you use the same number of significant figures from the numbers you are multiplying with the LEAST number of significant figures. Example: 92,873.239 * 2 = 200,000 (because the number 2 has only 1 significant figure even tho 92,873.239 has 8 significant figures your answer still only has 1 significant figure)
There are four significant figures in 3001.
The number 6.300 has four significant digits. We must assume that the only reason for including the two zeroes at the end is to express the precision of the measurement (whatever it was that was measured to yield this number). If you were only confident about the first two numbers, you would express it as 6.3 rather than 6.300 as you did.
Significant digits are digits that provide useful information, for instance 123 has 3 significant digits and 30010 has 4 significant digits. So basically zeros aren't significant unless they are between two other numbers. 0.1020 has only 4 significant digits. A+: 4
Only in numbers containing decimal points.
There are three. The 4, the 5 and the zero in between. The two last zeros serve only to properly space the decimal point which, in this number, is implied.
The sum of numbers can have as many significant figures as the number with the least significant figures in the original numbers. For example, if you add numbers with 3, 4, and 5 significant figures, the sum will have 3 significant figures.