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9966 [12]
3 years ago
5

Is everything that we can see in the universe matter

Chemistry
2 answers:
Drupady [299]3 years ago
8 0

Answer:

no

Explanation:

gayaneshka [121]3 years ago
6 0
I think that everything in the universe matters
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The density of helium is 0.17 g/L. What Is the mass of helium in a 5.4 L helium balloon? (2 sig figs) *
ioda

Answer:

The correct answer is 0.92 g

Explanation:

The density is defined as the mass per unit of volume:

Density= mass/volume

From the data provided:

volume= 5.4 L

density= 0.17 g/L

Thus, to calculate the mass of helium:

mass= density x volume = 0.17 g/L x 5.4 L= 0.918 g ≅ 0.92 g

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3 years ago
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Answer:

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