2 years ago

How many moles of MgCl2 are there in 343 g of the compound?

Chemistry

1 answer:

mash [69]2 years ago

6 0

The answer is 3.592?

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2 years ago

A sample of gas X occupies 10 mº at a pressure of 120 kPa.

Mashutka [201]

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The new pressure of the gas comes out to be 400 KPa.

Explanation:

Initial volume of gas = V = $10\textrm{ m}^{3}$

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Assuming temperature to be kept constant.

Assuming final pressure of the gas to be P' KPa

$PV = P'V' \\120\textrm{ KPa}\times 10\textrm{ m}^{3} = \textrm{P'}\times 3\textrm{ m}^{3} \\\textrm{P'} = 400\textrm{ KPa}$

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What is the [OH] if the pH is 4.7<br>A. 4.7<br>B. 5.0<br>C. 4.7 x 10 -10<br>D. 5.0 x 10 -10

earnstyle [38]

Answer:

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- You have to know the formulas. Let me know if you need them explained.

- Hope that helps! Please let me know if you need further explanation.

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