food and nutrition


Question: pressure...? A scientist builds a pressure thermometer by sealing air in a tank. If the pressure inside the tank is 945.6 mmHg when it is placed in a hot water bath at 92oC, and 653.0 mmHg when left on the ground outside the laboratory, what is the Celsius temperature outside the lab?

Answer: T1/P1 =T2/P2 T2 =( T1/P1) x P2, T1=273 +92 = 365 K, P1= 945.6 mmHg P2 = 653.0 mmHg T2 = (365/945.6)x653.0 = 252.1 K t2= 252.1 -273 = -20.9 oC

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