Landfills generate methane gas through the anaerobic decomposition of organic material in garbage. The gas produced by landfills is a mixture of

methane and carbon dioxide. Because methane is a strong greenhouse gas, landfill gas is often burned in a flare as it is vented from the landfill to

prevent it from entering the atmosphere. Imagine three alternative uses for the gas produced by landfills.

The bond energy for the van der waals bond between two helium atoms is 7.9×10−4ev. assuming that the average kinetic energy of a helium atom is (3/2)kbt, at what temperature is the average kinetic energy equal to the bond energy between two helium atoms

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.

Why is the melting of ice a physical change ?