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For many purposes we can treat nitrogen as an ideal gas at temperatures above its boiling point of -196 C. Suppose the temperature of a sample of nitrogen gas is raised from ⁢ -11 C to 18 C , and at the same time the pressure is changed. If the initial pressure was 0.12 Kpa and the volume increased by 60% , what is the final pressure?

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If a-b=5 and ab=4 find the value of a square 2 +b square 2

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