If a reaction involves gases and the pressure is decreased, how will the equilibrium change? a. towards the side with the fewest molecules. b. it will not be affected. c. towards the products. d. towards the side with the most molecules.

A towards the sode with the fewest molecules

Towards the side with the most molecules.

Explanation:

According to Le Chatelier’s Principle when stress is applied to a system in equilibrium, the equilibrium will shift in such a way to minimize the effect of the applied stress.  In a reaction involving gases when pressure of the gas is decreased there are fewer gas molecules so to compensate for this the equilibrium will shift towards more moles of the gas or towards the side with the most molecules.

the grams   of   barium that   are in   2.3 x 10^23   atoms of barium   is   52.4 g (answer c)

    calculation

mass = moles   of ba   x molar   mass of ba

  molar mass of ba from periodic table=   137.3 g/mol

  use the   avogadro's law   constant   to   calculate the moles of barium

  that   is     1 mole =   6.02   x 10^23 atoms

                    ? moles = 2.3 x 10^23   atoms

by cross   multiplication

=(1 mole   x 2.3x 10^23 atoms)   / 6.02   x10^23 atoms)=   0.382   moles

mass   is therefore = 137.3   g/mol x 0.382 mol = 52.4 ( answer c)

explanation:

it is stable as it is in group 0 which have full outer shells of electrons