Suppose that 70g of a substance is dissolved in 100cm^3 of water at 80°c. how much of the substance, in grams, will precipitate when the solution is cooled down to 30°c?

a. 55
b. 45
c. 10
d. 30
e. 25

Balance this equation co2(g) + h2o (g) show that the balanced equation obeys the law if conversation of mass

Many free radicals combine to form molecules that do not contain any unpaired electrons. the driving force for the radical–radical combination reaction is the formation of a new electron‑pair bond. consider the chemical equation. n(g)+no(g)⟶nno(g) n(g)+no(g)⟶nno(g) write lewis formulas for the reactant and product species in the chemical equation. include nonbonding electrons. n(g)n(g) select draw rings more erase select draw rings more erase select draw rings more erase n no(g)

How does the value of the equilibrium constant show that a reaction reaches equilibrium very quickly? (a) the equilibrium constant is large. (b) the equilibrium constant is small. (c) the equilibrium constant is zero. (d) the value of the equilibrium constant does not show how quickly a reaction comes to equilibrium.