When a catalyst is added to a system at equilibrium, a decrease occurs in the 1. activation energy
2. heat of reaction
3. potential energy of the reactants
4. potential energy of the products

There is an area in idaho named craters of the moon where most of the ground is covered with basalt, adark gray, igneous rock with no visibl crystals. what can you infer about the geographical history of the area?

Drug abuse will not lead to physical and psychological dependence. true or false ?

Give the set of reactants (including an alkyl halide and a nucleophile) that could be used to synthesize the following ether: draw the molecules on the canvas by choosing buttons from the tools (for bonds and charges), atoms, and templates toolbars, including charges where needed. ch3ch2och2ch2chch3 | ch3