Identifying a substance based on density lab:
Metal Density (g/mL)
Cu 8.92
A...
Physics, 23.04.2020 22:54 vanessasantos2004vs
Identifying a substance based on density lab:
Metal Density (g/mL)
Cu 8.92
Al 2.702
Pb 11.3437
Zn 7.14
Fe 8.39
Sn 7.28
You are given a metal block with a mass of 62.44g and a mass of 7cm3. What is the identity of your block? How did you know?
Answers: 2
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On a cold day, when the air temperature is 0°c, you empty your lungs and take a deep breath, filling your lungs with 4.2 l of air. if you hold your breath until the temperature of the air in your lungs reaches 37°c, what is the volume of the air in your lungs at that point, assuming the pressure does not change?
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8.29 two streams containing pyridine and acetic acid at 25°c are mixed and fed into a heat exchanger. due to the heat-of-mixing effect, it is desired to reduce the temperature after mixing to 25°c using a stream of chilled ethylene glycol as indicated in the diagram. calculate the mass flow rate of ethylene glycol needed. the heat capacity of ethylene glycol at these conditions is approximately 2.8 kj/(kg k), and the enthalpy change of mixing (δmixh) is given below.
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