If a bottle of oxygen with a pressure of 500 kPa with a volume of .30 L at 290 K has a temperature change to 370 K and the volume changed to 1.5 L because the bottle broke open and leaked into the bottles outer container, then what is the new Pressure of the oxygen? Remember the combined gas law equation. P1V1 / T1 = P2V2 / T2

a
.128 kPa
b
128 kPa
c
0 kPa
d
500 kPa Lp

One day, after pulling down your window shade, you notice that sunlight is passing through a pinhole in the shade and making a small patch of light on the far wall. you see that the patch of light seems to be a circular diffraction pattern. it appears that the central maximum is about 1 cm across and you estimate that the distance from the window shade to the wall is about 3 m. what is (a) the average wavelength of sunlight? (b) the diameter of the pinhole?

How does the entropy of steam compare to the entropy of ice?

A47.2 g block of copper whose temperature is 480 k is placed in an insulating box with a 91.8 g block of lead whose temperature is 200 k. (a) what is the equilibrium temperature of the two-block system? (b) what is the change in the internal energy of the two-block system between the initial state and the equilibrium state? (c) what is the change in the entropy of the two-block system? the heat capacities of copper and lead are 386 j/kg·k and 128 j/kg·k, respectively.