A spaceship is midway between the earth and the moon when its engines fail. What is its acceleration? Assume that the distance from the center of the earth to the center
of the moon is 3.8 x 108 m and the mass of the moon is 7.38 x 1022 kg.
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Awelder using a tank of volume 7.50×10^-2 m^3 fills it with oxygen (with a molar mass of 32.0 g/mol ) at a gauge pressure of 3.30×10^5 pa and temperature of 37.1 ∘c. the tank has a small leak, and in time some of the oxygen leaks out. on a day when the temperature is 23.1 ∘c, the gauge pressure of the oxygen in the tank is 2.00×10^5 pa . a) find the initial mass of oxygen. b) find the mass of oxygen that has leaked out.