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Reika [66]
3 years ago
15

Which of the following is the correct formula for barium (II) sulfate?

Chemistry
2 answers:
nasty-shy [4]3 years ago
5 0
BaSO4 is the correct formula for barium (ll) sulfate
balu736 [363]3 years ago
4 0
BaSO4 is the correct formula for barium (ll) sulfate
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Poor precision in scientific measurement may arise from
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3 years ago
Am i the only one getting a red text saying my question is mean?
Triss [41]

Answer:

I dont know

Explanation:

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3 years ago
Why was the line of best fit method used to determine the experimental value of absolute zero?
BartSMP [9]

Answer:

<u><em></em></u>

  • <u><em>Because the x-intercet of the graph represents volume zero, which indicates the minimum possible temperature or absolute zero.</em></u>

Explanation:

Charle's Law for ideal gases states that, at constant pressure, the <em>temperature</em> and the <em>volume</em> of a sample of gas are protortional.

                       \dfrac{V}{T}=k\\\\V=kT

That means that the graph of the relationship between Temperature, in Kelivn, and Volume is a line, which passes through the origin.

When you work with Temperature in Celsius, and the temperature is placed on the x-axis, the line is shifted to the left  273.15ºC.

Meaning that the Volume at 273.15ºC is zero.

You cannot reach such low temperatures in an experiment, and also, volume zero is not real.

Nevertheless, you can draw the line of best fit and extend it until the x-axis (corresponding to a theoretical volume equal to zero), and read the corresponding temperature.

Subject to the experimental errors, and the fact that the real gases are not ideal, the temperature that you read on the x-axis is the minimum possible temperature (<em>absolute zero</em>) as the minimum possible volume is zero.

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3 years ago
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