Question

oxygen gas kept at 45.00 degrees celcius has a pressure of 105.0 kPa. the pressure is decreased to 90.00 kPa. what temperature will allow this to happen?

Answer 1

Oxygen gas kept at 45.00 degrees Celsius has a pressure of 105.0 kPa. The pressure is decreased to 90.00 kPa. What temperature will allow this to happen?

**Answer**

In accordance with Ideal gas law we have the following system of equation:

$$n^*R*T = p*V$$ $$n*8,314*(45+273,15) = 105*10^3*V \ (1)$$ $$n*8,314*T = 90*10^3*V \ (2)$$

Hence, $T = 272,7$ K = -0,5 C

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