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Andru [333]
3 years ago
14

204,900,000,000 How many significant digits are found?

Chemistry
1 answer:
Advocard [28]3 years ago
5 0

Answer:

4

Explanation:

There are 4 significant figures because when there is not a decimal, then only numerical values over 0 are counted. So the numbers counted in sig figs are 2049, and none of the other 0s.

So if it was 204,900,000,000.0, then it would have 12 significant figures.

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a gas sample occupies a volume of 140 mL at a temperature of 296 K and a pressure of 98.2kPa. how many moles of gas are there? s
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Answer:

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Explanation:

The following data were obtained from the question:

V = 140mL = 0.14L

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n = PV /RT

n = (0.97x0.14)/(0.082x296)

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