From the Steam Tables I get the following:
T v sub f d ( kg / m^3 ]
15.0 C 0.001001 m^3/ kg 999.0 kg / m^3
20.0 C 0.001002 m^3/ kg 998.0 kg/ m^3
25.0 C 0.001003 m^3 / kg 1001 kg / L^3
30.0 C 0 .001004 m^3 / kg 996.0 kg/m^3
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Search also NISTIR 6969, table 9.8 (it's free on internet) or a density calculator.
There are two significant figures: 2 and 0 The significant figures of a number are those digits that carry meaning contributing to its precision. Leading zeros (the zero before the 2) are not significant.
5 significant figures, from the 4 onwards. This assumes the last zero is not a place holder but an indicator of the degree of accuracy.
Density @ 15 Deg = 0.7952 ( 20 Deg Density + 0.0032)
One - all nonzero digits are significant. Yes, but embeded 0s are also counted. 102 has 3 sig digs. Secondly, trailing 0s (0s on the right hand side of the number) are significant if they are an indication of the degree of accuracy, but not otherwise.
The density is is 1,26699 g/cm3.
there are 4
There are two significant figures: 2 and 0 The significant figures of a number are those digits that carry meaning contributing to its precision. Leading zeros (the zero before the 2) are not significant.
Significant figures are the number of digits in a value, often a measurement, that contribute to the degree of accuracy of the value.
5 significant figures, from the 4 onwards. This assumes the last zero is not a place holder but an indicator of the degree of accuracy.
The degree of accuracy of the measuring instrument.
3: assuming that the 0 at the right end is there to indicate the degree of precision.
4, assuming the 0 at the end is to indicate the degree of precision.
Significant figures are important because they indicate the degree of accuracy - the minimum amount by which a quantity is distinguished to be different from a similar amount.The more significant figures the more accurate the data will be.
There would be five. The only time you do not count figures as significant is if they are zeroes behind a decimal, but before any other figure. Ex/ 0.000501 only has three significant figures, while 1.000501 has seven.
The measurement units and the degree of precision (significant figures or margin of error).
the digits of a number that are used to express it to the required degree of accuracy, starting from the first nonzero digit.
Depending on the degree of accuracy you are wanting you would change the number of significant figures in the answer, but the full value is the following: 1.59840e^5