Chemistry, 23.08.2019 04:10 skyflyer878
An insulated 8m* rigid tank contains air, modeled as an ideal gas, at 600kpa and 400k. a valve connected to the tank is opened and air is allowed to escape until the pressure drops to 200kpa. the air temperature is held constant during the process by an electric heater placed in the tank. determine the electrical energy supplied to the air during this process. internal energy of the initial air is u = 286.1 6hĺ kg ; the enthalpy of the exiting air is hvit400.98hj/ kg
Answers: 3
Chemistry, 21.06.2019 22:20
One or more substances changing into one or more substances is an example of a
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Chemistry, 22.06.2019 10:10
For the reaction, 4 a(g) + 3 b(g) => 2 c(g), the following data were obtained at constant temperature. experiment initial[a],mol/l initial [b],mol/l initial rate,m/min 1 0.200 0.150 5.00 2 0.400 0.150 10.0 3 0.200 0.300 10.0 4 0.400 0.300 20.0 which of the following is the correct rate law for the reaction? 1. rate = k[a]2[b]2 2. rate = k[a][b] 3. rate = k[a]2[b] 4. rate = k[a][b]2
Answers: 3
Chemistry, 22.06.2019 18:50
Question 3(multiple choice worth 4 points) (04.04 lc) what does it mean when an element is reduced? it empties a valance shell, reducing its atomic radius. it gains electrons, reducing its overall charge. it increases electronegativity, reducing its ability to bond. it loses electrons, reducing its electron number.
Answers: 1
An insulated 8m* rigid tank contains air, modeled as an ideal gas, at 600kpa and 400k. a valve conne...
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