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AlexFokin [52]
3 years ago
15

A cylinder at left with balls evenly spaced throughout the cylinder with an arrow leading to a cylinder at right with balls stac

ked near the bottom of the cylinder.
Which change of state is shown in the model?

condensation
deposition
boiling
freezing

Chemistry
2 answers:
Verizon [17]3 years ago
7 0

Answer:

freezing lol

Explanation:

Dovator [93]3 years ago
5 0

Answer:

deposition

Explanation:

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Lelechka [254]

Answer: 6.38 moles of O_2 are needed to react with 2.55 mol of C_2H_2

Explanation:

The balanced chemical reaction for the combustion of ethyne is:

2C_2H_2+5O_2\rightarrow 4CO_2+2H_2O

According to stoichiometry:

2 moles of C_2H_2 require = 5 moles of O_2

Thus 2.55 mol of C_2H_2 require = \frac{5}{2}\times 2.55=6.38 moles of O_2

Thus 6.38 moles of O_2 are needed to react with 2.55 mol of C_2H_2

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snow_lady [41]

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Given :

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