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Arrange the following species in order of (a) increasing ionic radius, and (b) increasing ionization energy: O2-, F-, Na+, Mg2+. Explain your answer in terms of nuclear charge and charge of ions.
Elements with very large ionization energies also tend to have highly exothermic electron affinities. Explain. Which group of elements would you expect to be an exception to this statement?
Elements with very large ionization energies also tend to have highly exothermic electron affinities. Explain. Which group of elements would you expect to be an exception to this statement?
Which oligopoly model(s) has the same results as a competitive model?
A firm's demand curve is P = 1 - 2Q. The firm has a current price of R1000 and it sells 100 units per day. What is the firm's price elasticity of demand?
An extra-large pizza is circular with a diameter of 12 inches. Pizza sauce is spread on the pizza dough at a rate of 1.1 mL of pizza sauce per square inch (in2) of crust. How much pizza sauce (rounded to the nearest 1 mL) is required to cover the entire pizza, if a 1-inch crust is to be left around the edge of the entire pizza?
When 8.00 grams of methane reacts it produces 2.4 L of hydrogen gas at 300 K. What is the pressure of the
hydrogen gas?
Determine the [H+] , [OH−] , and pH of a solution with a pOH of 2.81 at 25 °C.
[H+]=
[OH−]=
pH=
Determine the [H+] , [OH−] , and pOH of a solution with a pH of 8.42 at 25 °C.
[H+]=
[OH−]=
pOH=
Determine the [H+] , pH, and pOH of a solution with an [OH−] of 7.2×10−8 M at 25 °C.
[H+]=
pH=
pOH=
#340153 on Dec 2023