When h2(g) is mixed with co2(g) at 2,000 k, equilibrium is achieved according to the following equation co2(g) + h2(g) < -> h2o(g) + co(g) in one experiment, the following equilibrium concentrations were measured.
[h2] = 0.20 mol/l
[co2] = 0.30 mol/l
[h2o] = [co] = 0.55 mol/l
a. what is the mole fraction of co(g) in the equilibrium mixture? (1 mark)
b. using the equilibrium concentrations given above, calculate the value of kc, the equilibrium constant for the reaction. (2 marks)
c. determine kp in terms of kc for this system. (2 marks)
d. when the system is cooled from 2,000 k to a lower temperature, 30.0 percent of the co(g) is converted back to co2(g). calculate the value of kc at this lower temperature. (2 marks)

Which explanation is true about what happens to a ray of light when it strikes a mirror? a. a light ray is transmitted toward a mirror at a certain angle. the light ray is then reflected by the mirror at an equal angle but in the opposite direction of the transmitted ray. b. an incident ray strikes a mirror at an angle with a line perpendicular to the mirror. the light ray is then reflected at an angle equal to the angle of incidence but on the opposite side of the perpendicular line. c. a reflecting ray strikes a mirror at an angle with a line perpendicular to the mirror. the light ray is then refracted at an angle equal to the angle of the reflecting ray and on the same side of the perpendicular line. d. an incident ray strikes a mirror at an angle with a line parallel to the mirror. the light ray is then transmitted at an angle equal to the angle of incidence but on the opposite side of the parallel line. you so much! : -d take the time to try and answer correctly.

What is the chemical name of the compound na2co3? use the list of polyatomic ions and the periodic table to you answer. a. sodium carbon oxide b. sodium carbonate c. sodium(ll) carbonate d. sodium oxalate

What is the typical rotational frequency frot for a molecule like n2 at room temperature (25∘c)? assume that d for this molecule is 1å=10−10m. take the total mass of an n2 molecule to be mn2=4.65×10−26kg. you will need to account for rotations around two axes (not just one) to find the correct frequency. express frot numerically in hertz, to three significant figures.