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Physics, 21.06.2019 20:00
The first law of thermodynamics states that heat added to a system is neither created nor destroyed but is transformed â as it changes into other forms of energy.
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Physics, 22.06.2019 23:00
Awelder using a tank of volume 7.50Ă10^-2 m^3 fills it with oxygen (with a molar mass of 32.0 g/mol ) at a gauge pressure of 3.30Ă10^5 pa and temperature of 37.1 âc. the tank has a small leak, and in time some of the oxygen leaks out. on a day when the temperature is 23.1 âc, the gauge pressure of the oxygen in the tank is 2.00Ă10^5 pa . a) find the initial mass of oxygen. b) find the mass of oxygen that has leaked out.
Answers: 3
Physics, 23.06.2019 02:00
Five structural isomers have the formula c6h14. where needed, draw the structure and give the iupac name of all five isomers.
Answers: 2
A boy lifts a weight of 50.0 N from the floor to the top of a table, a vertical distance of 3.0. met...
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