Gas under 200 kPa of pressure at a temperature of 120 K fills a 0.5 L container. If the temperature decreases to 80 K but the pressure stays the same, what volume will the gas have?

The first element on the periodic table of elements is carbon. a. true b. false

One of the hopes for solving the world's energy problem is to make use of the fusion reaction 21h +31h --> 42he + 10n + energy how much energy is released when 1 mol of deuterium is fused with 1 mol of tritium according to the above reaction? the masses of the atoms and the neutrons are as follows: 21h = 2.0140 amu 31h = 3.01605 amu 42he = 4.002603 amu 10n = 1.008665 amu. the speed of light is 2.9979 x 108 m/s.

What produces wave a)sound b) heats c)transfer of energy d)vibrations