The following equilibrium constants have been determined for hydrosulfuric acid at 25ºc:
h2s(aq) ⇌ h+(aq) + hs–(aq) k′c = 9.5 × 10^–8
hs–(aq) ⇌ h+(aq) + s2–(aq) k″c = 1.0 × 10^–19
calculate the equilibrium constant for the following reaction at the same temperature: h2s(aq) ⇌ 2h+(aq) + s2–(aq).

Write a hypothesis that answers the lesson question, “while observing a chemical reaction, how can you tell which reactant is limiting? ” hypothesis: if a substance is the limiting reactant, then . . because . .

The difference between the atomic number of an element and the element’s atomic mass is the number of ions.

Which set of characteristics best describes igneous rock? a) largest type of rock, made of organic matter, hardest type of rock b) least abundant type of rock, made of other rocks, made mostly of minerals c) found on all continents, contains wavy bands of stripes, contains fossils d) most abundant type in earth's crust, made of magma/lava, contains no fossils