Ammonium iodide dissociates reversibly to ammonia and hydrogen iodide:
nh4i(s) ⇋ nh3(g) + hi(g)kp = 0.215 at 400°c
calculate the partial pressure of ammonia at equilibrium when a sufficient quantity of ammonium iodide is heated to 400°c.
a.0.103 atm
b.0.215 atm
c.0.232 atm
d.0.464 atm
e.2.00 atm

Read the given expression. x = number of protons − number of core electrons which of the following explains the identity of x and its trends across a period? x is the effective nuclear charge, and it remains constant across a period. x is the screening constant, and it remains constant across a period. x is the effective nuclear charge, and it increases across a period. x is the screening constant, and it increases across a period.

As you move from right to left on the periodic table the atomic radius fill in the blank

How many atoms are there in 5.70 mol of mg