Phosgene (carbonyl chloride), COCl2, is an extremely toxic gas that is used in manufacturing certain dyes and plastics. Phosgene can be produced by reacting carbon monoxide and chlorine gas at high temperatures:
CO(g)+Cl2(g)?COCl2(g)
Carbon monoxide and chlorine gas are allowed to react in a sealed vessel at 476?C . At equilibrium, the concentrations were measured and the following results obtained:
Gas Partial Pressure
(atm)
CO 0.840
Cl2 1.16
COCl2 0.140
What is the equilibrium constant, Kp, of this reaction?
In Part A, you were given the equilibrium pressures, which could be plugged directly into the formula for K. In Part B however, you will be given initial concentrations and only one equilibrium concentration. You must use this data to find all three equilibrium concentrations before you can apply the formula for K.
The following reaction was performed in a sealed vessel at 725?C :
H2(g)+I2(g)?2HI(g)
Initially, only H2 and I2 were present at concentrations of [H2]=4.00M and[I2]=2.55M. The equilibrium concentration of I2 is 0.0100M . What is the equilibrium constant, Kc, for the reaction at this temperature?

assuming that your periodic table has eighteen columns, you should highlight   the four elements in the third column from the left of the table.

neutral atoms of elements after calcium contain d electrons. the energy of d orbitals of a particular main shell lies between the energy of the s and p orbitals of the next main shell. for example, electrons in the have energy higher than those in the orbital while lower than those of the orbital.

by the aufbau principle, electrons fill orbitals one at a time, starting from those of the lowest energy. the orbital is therefore filled right after orbitals and before orbitals.  

potassium has electron configuration and calcium . the s orbital of a main shell holds a maximum of two electrons. the next element would thus have the electron configuration and satisfy the requirements.

a neutral atom of the element contains three electrons on top of the most recent noble gas element. it should thus be placed in the third column of the periodic table. both scandium and yttrium would satisfy the conditions. an aufbau diagram indicates that the 4f orbital is filled before the 5d. however, it appears that exceptions exists for both lanthanum and actinium. neutral atoms of the two d-block elements also demonstrate the and should be highlighted as well.

if you're asking what comes out, it's steam.

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