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Nat2105 [25]
3 years ago
14

Calculate the mole mass of following compound FeSO4

Chemistry
1 answer:
Arada [10]3 years ago
3 0

Explanation:

the molar mass of the compound is 1502g/mol

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15. List the substances A-E in order from most dense to least dense based on the facts provided.
Volgvan

Answer:

So 1st it is B then D then E then a then C

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3 years ago
A sample of H2 gas (12.28 g) occupies 100.0 L at 400.0 K and 2.00 atm. A sample weighing 9.49 g occupies ________ L at 353 K and
lutik1710 [3]

Considering the ideal gas law, a sample weighing 9.49 g occupies 68.67 L at 353 K and 2.00 atm.

Ideal gases are a simplification of real gases that is done to study them more easily. It is considered to be formed by point particles, do not interact with each other and move randomly. It is also considered that the molecules of an ideal gas, in themselves, do not occupy any volume.

An ideal gas is characterized by three state variables: absolute pressure (P), volume (V), and absolute temperature (T). The relationship between them constitutes the ideal gas law, an equation that relates the three variables if the amount of substance, number of moles n, remains constant and where R is the molar constant of the gases:

P× V = n× R× T

In this case, you know:

  • P= 2 atm
  • V= ?
  • n= 9.49 gramsx\frac{1 mole}{2 grams} = 4.745moles being 2g/mole  the molar mass of H2, that is, the amount of mass that a substance contains in one mole.
  • R= 0.082 \frac{atmL}{molK}
  • T= 353 K

Replacing:

2 atm× V = 4.745 moles× 0.082\frac{atmL}{molK}× 353 K

Solving:

V = (4.745 moles× 0.082\frac{atmL}{molK}× 353 K)÷ 2 atm

<u><em>V= 68.67 L</em></u>

Finally, a sample weighing 9.49 g occupies 68.67 L at 353 K and 2.00 atm.

Learn more:

  • brainly.com/question/4147359?referrer=searchResults
5 0
3 years ago
When a book sits on a shelf, what force (If Any) does the shelf exert on the book?
Bad White [126]
I'm pretty sure its the weight of the book
3 0
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aliya0001 [1]

Answer: Option (B) is the correct answer.

Explanation:

It is known that flow of electrons is known as current. Also, we know that electrons carry a negative charge.

Therefore, when parallel wires carrying current in the same direction then due to the same charge there will be repulsion between the electrons.

Thus, we can conclude that Ampere showed that parallel wires carrying current in the same direction would repel each other.

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Which of these is an example of physical change?
LekaFEV [45]
<h2>Example of Physical change </h2>

Ice forming and then melting back into water are an example of physical change because the nature of water is liquid. Yet when it freezes then it becomes into solid form. The water which is liquid then freezes to form ice form which is as a solid which is also a physical change.

If we see that when ice which is frozen and in solid form starts to melt by heat then it converts into water which is liquid form. This indicates that water freezes to form ice means liquid to solid therefore its shape changes which is a physical change. When ice melts it becomes solid to liquid it also changes shape and subsequently takes a physical change.

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