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ki77a [65]
3 years ago
6

Which of the following methods can be used to completely separate a solution containing alcohol and water?

Chemistry
2 answers:
krek1111 [17]3 years ago
8 0
Evaporation and distillation

Alenkinab [10]3 years ago
6 0
A only gets out some of it but not all
C that isn't for alcaholl
D I don't think that even exists
B is the only correct answer
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3 years ago
If there are 1.55 x 1024 molecules of hydrogen peroxide (H2O2), what is the mass of the<br>sample? ​
bezimeni [28]

Answer:

87.54 g of H₂O₂

Explanation:

From the question given above, the following data were obtained:

Number of molecules = 1.55×10²⁴ molecules

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From Avogadro's hypothesis,

6.02×10²³ molecules = 1 mole of H₂O₂

Next, we shall determine the mass of 1 mole of H₂O₂. This can be obtained as follow:

1 mole of H₂O₂ = (2×1) + (2×16)

= 2 + 32

= 34 g

Thus,

6.02×10²³ molecules = 34 g of H₂O₂

Finally, we shall determine mass of H₂O₂ that contains 1.55×10²⁴ molecules. This can be obtained as follow:

6.02×10²³ molecules = 34 g of H₂O₂

Therefore,

1.55×10²⁴ molecules

= (1.55×10²⁴ × 34)/6.02×10²³

1.55×10²⁴ molecules = 87.54 g of H₂O₂

Thus, 87.54 g of H₂O₂ contains 1.55×10²⁴ molecules.

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2 years ago
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3 years ago
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A homogeneous mixture is a mixture in which the composition is uniform throughout the mixture.

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