She slams her fist onto the calculator with 8000 j of KE. If she moved her arm at 3 m/s, what is the mass of her fist?

In what way does a catalyst increase the rate of a chemical reaction? it increases the concentration of reactants. it reacts with a portion of the reactant particles. it provides additional kinetic energy to reactant particles.

To be considered a source of water pollution, the source must include a chemical.

Which element has the smallest radius? a. fluorine b. iodine c. chlorine d. bromine

Complete combustion of a sample of a hydrocarbon on excess oxygen produces equimolar quantities of carbon dioxide and water. Which of the following could be the molecular formula of the compound? A. C2H2 B. C2H6 C. C4H8 D. C6H6

For the process O2 (g) →2O (g), ΔH° = 498 kJ·mol-1. What would be the predicted sign of ΔS°rxn and the conditions under which this reaction would be spontaneous?

If the temperature is constant what change in volume would cause the pressure of an enclosed gas to increase by a factor of 4

For the reaction of carbon with carbon dioxide to make carbon monoxide, one set of conditions produced a Kc = 1.2 * 10-1. At equilibrium at a certain temperature, the concentration of product was 0.60 M.

Water is a colorless and odorless liquid. It can exist in solid, liquid, and gas states. It boils at 100 degrees C and melts at 0 degrees C. Which option best describes this information? A. These are the physical properties of water. B.

What can happen to a supersaturated silution?

What is the source for georthermal energy