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Vlad1618 [11]
2 years ago
15

7. Assume that you have collected 867 L of nitrogen gas at STP. What is the mass of the nitrogen gas?

Chemistry
1 answer:
jekas [21]2 years ago
6 0

Answer:

1083.6 g

Explanation:

At STP, 1 mol of any given mass will occupy 22.4 L.

With the information above in mind we can<u> calculate how many moles of nitrogen gas (N₂) are there in 867 L</u>:

  • 867 L ÷ 22.4 L/mol = 38.7 mol

Finally we convert 38.7 moles of N₂ into grams, using its molar mass:

  • 38.7 mol * 28 g/mol = 1083.6 g
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Answer:

D. Crystallization

Explanation:

Let's clarify the irrelevant terms first.

  1. unification: This term has nothing to do with chemistry at all
  2. lithification: When the problem mentions magma and lava, you might think that this term is related to the process here. However, 'lithification' <em>do </em>have a precise meaning in geology. It refers to the process where sediments collapses into one single rock under pressure, which has nothing to do with the process mentioned here.

Now, for 2 terms that might confuse you: 'solidification' and 'crystallization' these also has precise scientific definition

Solidification is defined the process where substances in <em>liquid</em> phase changes its phase to <em>solid</em>. On first glance, this answer might seems correct, and yes, it is correct for this question. But not the <em>most</em> correct.

The keyword here is  

 'the internal components will arrange its self in an  organized pattern.'

Crystallization is a special case of Solidification where the atoms or molecules of liquid solidify by spontaneously arrange themselves in periodic, ordered, and organized pattern. It might or might not happen during solidification depending on cooling rate, viscosity of liquid, and other factors.

So, Crystallization is the most correct answer here.

4 0
3 years ago
Write a paragraph about the three forms of energy involved in a muscle contraction (chemical, mechanical, and thermal).
klasskru [66]
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During a reaction, the enthalpy of formation of an intermediate is 34 kJ/mol.
galina1969 [7]

Since the enthalpy can be calculated from the heat of formation, the enthalpy is 136 kJ/mol.

<h3>What is enthalpy?</h3>

The enthalpy of a reaction is the heat that is lost or gained in that reaction. We know that the enthalpy can be calculated from the heat of  formation.

Thus, we can obtain the enthalpy of the reaction as 4 * 34 kJ/mol = 136 kJ/mol.

Learn more about enthalpy:brainly.com/question/13996238

#SPJ1

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2 years ago
Alcano con 1 carbono?
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creo esto te va a ayudar

5 0
3 years ago
Chemical ____ are used to represent compounds ​
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Answer:

Its formula :)

Explanation:

hope this helps <3

3 0
3 years ago
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