1. The problem statement, all variables and given/known data The rms speed of the molecules in 1.1 g of hydrogen gas is 1800 m/s. 500 J of work are done to compress the gas while, in the same process, 2000 J of heat energy are transferred from the gas to the environment. Afterward, what is the rms speed of the molecules? I've already solved for the total translational energy(1800 J) before more work was done to the molecules. The thermal energy was also 3000 J. 2. Relevant equations E = (5/3)(1/2)mv^2 3. The attempt at a solution Since 500 J are compressed, and 2000 J are released, the energy would then be 300 J. I tried setting this equal to the above equation, but all answers I entered were wrong.