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Alex_Xolod [135]
2 years ago
14

2.

Chemistry
1 answer:
notka56 [123]2 years ago
7 0

Answer:

417

Explanation:

50um is

50000nm

50000:120=417

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A balloon filled with helium occupies 20.0 l at 1.50 atm and 25.0◦c. How many moles of helium will there be in the balloon at st
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