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

Iron (II) sulfide reacts with hydrochloric acid according to the reaction: FeS (s) + 2 HCl (aq) right arrow FeCl2 (s) + H2S (g) A reaction mixture initially contains 0.175 mol FeS and 0.481 mol HCl.

What is the maximum amount in moles of P2O5 that can theoretically be made from 235 g of P4 and excess oxygen?

What is a wind turbine often used for? A. converting thermal energy into electrical energy B. converting mechanical energy into electrical energy C. converting chemical energy into mechanical energy D.

Which of the following have been determined as the oldest living tree types on Earth? Select all that apply. Bristlecone pine Mesquite Sequoia Ponderosa pine

Calculate the pressure, in atmospheres, of 2.0 mol of helium gas in a 10.0 L container at 27 degrees Celsius.

Which of the following statements about chemical formulas is FALSE? A) The subscripts represent the relative number each type of atom in the compound. B) The subscripts represent the relative mass of each type of atom in the compound.

The lowest possible concentration of free hydrogen ions is represented by a ph value of

Diseases that are inherited are caused by

Why do many metal ions produce acidic solutions when dissolved in water?

Which property of potential energy distinguishes it from kinetic energy? a. mass b. position c. force d. work and power