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Rama09 [41]
3 years ago
5

Which one is correct

Chemistry
2 answers:
anyanavicka [17]3 years ago
4 0

Answer:

number 3.

Explanation:

Licemer1 [7]3 years ago
3 0

Answer:

3

Explanation:

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<span>polar bonds due to high difference . In electronegativity of oxygen and hydrogen.</span>
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With initial consent for a warrantless search, police spent three days searching a
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Calculate the number of moles of a gas that is present in a 7.55 L container at 45°C, if the gas exerts a pressure of 725mm Hg.
vovikov84 [41]

<u>Answer:</u> The number of moles of gas present is 0.276 moles

<u>Explanation:</u>

To calculate the number of moles of gas, we use the equation given by ideal gas:

PV = nRT

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T = Temperature of the gas = 45^oC=(45+273)K=318K

Putting values in above equation, we get:

725mmHg\times 7.55L=n\times 62.3637\text{ L.mmHg }mol^{-1}K^{-1}\times 318K\\\\n=0.276mol

Hence, the number of moles of gas present is 0.276 moles

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