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Physics, 22.06.2019 10:30
An insulated 40 ft^3 rigid tank contains air at 50 psia and 120ยฐf. a valve connected to the tank is now opened, and air is allowed to escape until the pressure inside drops to 25 psia. the air temperature during this process is kept constant by an electric resistance heater placed in the tank. determine the electrical work done during this process.
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Physics, 22.06.2019 14:20
The energy released by a nuclear fusion reaction is produced when
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Physics, 22.06.2019 17:20
Properties seen when one one substance changes to another are known as properties
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Physics, 22.06.2019 17:40
The first-order reaction aโ2b+c has rate constant 0.538 sโ1. if the initial concentration of a is 0.867 mol lโ1, what is the half-life of the reaction in seconds? remember to use correct significant figures in your answer (round your answer to the nearest hundredth). do not include units in your response.
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