Given the reaction at equilibrium: A(g) + B(g) = C(g) + D(g)
At a constant temperature and pressure, an increase in the concentration of A(g) will cause
A A decrease in the concentration of B(g)
B An increase in the concentration of B(g)
A decrease in the concentration of D(g)
D A decrease in the concentration of C(g)

About 8 gallons of fuel will be used. (8.08)

The answer is 4 i don't know if its right let me see.

Sink to the bottom. addition of potassium nitrate past it’s dissolution capacity at a particular temperature will cause the extra to just sink to the bottom of the glass.however, if you were to raise the temperature of the solution prior to dissolving it, and then slowly decrease the temperature after the dissolution, you would create a “supersaturated” solution - a solution that has more solute dissolved into it than should be allowed. if you add any extra solute past this, the entire solution would “crystallize,” and this is how you get those cool videos on youtube.