How many electrons can exist in the second shell surrounding an atomic nucleus?
a. 1 or 2
b. 1 to 8
c. more than 8
d. it depends on what the element is.

When will le chatelier's principle come into effect? at the beginning of a reaction, when there are only reactants when a reaction has reached chemical equilibrium when a catalyst is added to a reaction mixture when a reaction is occurring but not yet at equilibrium

50 pts plz what is the physical state of matter of baking soda.

Consider the reaction: n2(g) + o2(g) ? 2no(g) kc = 0.10 at 2000oc starting with initial concentrations of 0.040 mol/l of n2 and 0.040 mol/l of o2, calculate the equilibrium concentration of no in mol/l how would this be done?