Explanation:
Step 1: Write the balanced "molecular" equation:
Step 2: H₂S is written in molecular form. Consult the solubility and net ionic equation rules on the information page to determine which of the other substances will dissociate:
yes no yes
Step 3: Dissociate all soluble salts, strong acids, and strong bases (except calcium hydroxide). Leave together all "not soluble" salts and weak acids or bases:
Step 4: Cross out "spectator ions" that appear on both sides of the reaction (these ions do not participate in the chemistry) and rewrite the "net" reaction using the smallest possible coefficients:
Stirring promotes the reaction by exposing all of the unreacted region of the marble to the acid. Moreover, mixing increases the degree of homogenity within the reaction mixture, meaning the reaction is carried out evenly through out rather than faster in some regions while slower in others.
I Think This Is Right
Answer:
Reactants have more energy than products
Explanation:
Generally, in an exothermic reaction heat is released. In other words, energy is released. So you start with reactants which have a set amount of stored chemical energy, and you lose some in the reaction. Since energy is 'leaving', the stored chemical energy in the products is less than what we started with in the reactants. When given a graph, you can tell this is true because going from left to right, the line representing the stored chemical energy will start at a higher level than where it ends.
Answer: X2Y3
Explanation: I had the same question ;) (and got it right)
Its shaped Florida into 7 regions through lakes, streams, rivers ect
