3 years ago

Which of the following reactions is an example of a single replacement reaction?

Chemistry

1 answer:

qwelly [4]3 years ago

4 0

Answer:

Explanation:

This is the only reaction where a element is displaced out of a solution and turn a soild, due to it been less reactive than the other causing its displacement The electrochemical series can be used as reference.

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The gasses in a hair spray can are at temperature 300k and a pressure of 30 atm, it

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Answer:

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Recall the ideal gas law:

$\displaystyle PV = nRT$

Because only pressure and temperature is changing, we can rearrange the equation as follows:
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Substitute and solve for <em>T</em>₂:

$\displaystyle \begin{aligned} \frac{(30\text{ atm})}{(300\text{ K})} & = \frac{(90\text{ atm})}{T_2} \\ \\ T_2 & = 900\text{ K}\end{aligned}$

Hence, the temperature must be reach 900 K.

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