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Ket [755]
3 years ago
13

A sample of gas has a volume of 135 ml at 0.600 atm. what would be the volume if the pressure is decreased to 0.200 atm while te

mperature is held constant? 405 ml 101 ml 180 ml 135 ml 45.0 ml
Chemistry
1 answer:
Orlov [11]3 years ago
5 0

Answer: -

405 mL

Explanation: -

Initial Pressure P 1 = 0.6 atm

Final Pressure P 2 = 0.2 atm

Initial volume V 1 = 135 mL

Using Boyle's Law,

At constant temperature,

P 1 x V 1 = P 2 x V 2

0.6 atm x 135 mL = 0.2 atm x V 2

Final volume = V 2 = \frac{0.6 atm x 135 mL}{0.2 atm}

= 405 mL

Thus if a sample of gas has a volume of 135 ml at 0.600 atm. 405 mL would be the volume if the pressure is decreased to 0.200 atm while temperature is held constant.

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Answer:

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Explanation:

See Thermodynamic Properties Table in appendix of most college level general chemistry texts. The values shown are for the standard heat of formation of substances at 25°C. The Standard Heat of Formation of a substance - by definition - is the amount of heat energy gained or lost on formation of the substance from its basic elements in their standard state. C₆H₆(l) is formed from Carbon and Hydrogen in their basic standard states. All elements in their basic standard states have ΔH°f values equal to zero Kj/mole.

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