One mole of gas is taken through a four step process in a closed system. Consider the following steps: 1. The gas goes through an isothermal expansion at 600 K from 5 to 4 bar. 2. The gas goes through an adiabatic expansion from 4 bar to 3 bar. 3.The gas goes through an isobaric cooling at 3 bar The gas goes through an isochoric heating to 600 K. If you assume the gas behaves ideally with C_P = (7/2)R, please determine Q, W, Delta H and Delta U for each step.

Which of the following units is not an official si unit

If a gas has an initial pressure of 101kpa and a volume of 10l, then it expands to a volume of 20l, what is the new pressure?

Tooth enamel consists mainly of the mineral calcium hydroxyapatite, ca_10(po_4)_6(oh)_2. trace elements in teeth of archaeological specimens provide anthropologist with clues about diet and diseases of ancient people. students at hamline university measured strontium in enamel from extracted wisdom teeth by atomic absorption spectroscopy. solutions with a constant total volume of 10.0 ml contained 0.726 mg of dissolved tooth enamel plus variable concentrations of added sr. added sr find the concentration of sr in the 10 ml sample solution in parts per billion = ng/ml. find the concentration of sr in tooth enamel in parts per million = mu g/g.