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Q: How many significant digits does it have 50.4 g?

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2 significant figures.

2 significant figures.

Three.

3 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

50.4 has three significant digits.

Three - all nonzero digits are significant.

Three - all nonzero digits are significant.

504 g = 17.78 oz

It is 13.2 g.

100(23.9/30.3) = 78.9 % Ni, to the justified number of significant digits. 100(6.4/30.3) = 21 % O, to the justified number of significant digits. Fewer significant digits are given for the oxygen percentage because one of its input data, 6.4, has only two significant digits.

It is 13.2 grams.

The question, "translated" into arithmetic, is, "what is the value of the fraction: [76.3 g/(92.02 g/mole)], and the answer is 0.800 moles, to the justified number of significant digits.

2 significant figures.

Assuming that the questioner meant 60.9 cubiccentimeters, the answer is 56/60.9 = 0.92 grams per cubic centimeter. Only two significant digits are justified since this is the number of significant digits in 56 g as stated.

Only 1004.

504 Milligrams.

4 of them.

five

Three

5

6 of them.

2 of them.