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Umnica [9.8K]
3 years ago
15

What is the correct prefix for 5? A. Deca- B. Penta- C. Tetra- D. Hexa-

Chemistry
2 answers:
Art [367]3 years ago
6 0

Answer:

Its B penta

Explanation:

a_sh-v [17]3 years ago
5 0

Answer:

B. penta

you’re welcome

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Answer:

Explanation:

The air 9% mole% methane have an average molecular weight of:

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In = Out

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<em></em>

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95%×(20144 + 25180) mol/h = 43058 mol air× 21%O₂ = 9042 mol O₂ ×32g/mol = <em>289 kg O₂</em>

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Percent of oxygen is: \frac{289kg}{1249 kg} =<em>0,231 kg O₂/ kg air</em>

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I hope it helps!

4 0
2 years ago
What do radio waves and gamma rays have in common?
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