A sample of O2 occupies 75 L at 1 atm. If the volume of the sample doubles what is the pressure of O2

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.

Which rate indicates the number of children that would be born per woman if she were to live to the end of her child bearing years

Who discovered a pattern to the elements in 1869?