An ideal gas is compressed to a quarter of the volume it was previously occupying. The gas is also heated to double its original temperature. 16.) By what factor does the pressure change? (A) 4 (B) 8 (C) 16 (D) 6 (E) 2

In a system, when potential energy decreases, then entropy also decreases. true false

In order of decreasing light-transmitting capabilities of materials, which is the correct sequence? a. transparent -> translucent -> opaque b. opaque -> transparent -> translucent c. opaque -> translucent -> transparent d. translucent -> transparent -> opaque

The average density of the planet uranus is 1.27 103 kg/m3. the ratio of the mass of neptune to that of uranus is 1.19. the ratio of the radius of neptune to that of uranus is 0.969. find the average density of neptune.