State five different methods of changing the rate of a reaction

Solutions that are acidic have a ___ concentration of H + ions and a ___ concentration of OH-ions. Solutions that are basic have a ___ concentration of OH-ions and a ___ concentration of H + ions.

In the PhET activity, "Properties of Gases", when volume is kept the same, as the temperature is increased A. the rate of collisions increases B. the pressure decreases C. the rate of collisions decreases D. none of these are correct

How does an increase in concentration affect the rate of a reaction? a) it speeds the reaction up b) it slows the reaction down c) it decreases the number of collisions

Suppose paper pulp mills are permitted to emit harmful pollutants, free of charge, into the air. How will the price and output of paper in a competitive market compare with their values under conditions of ideal economic efficiency

Nitrogen is a group 15 element. What does being in this group imply about the structure of the nitrogen atom? A. Nitrogen has 15 valence electrons. B. Nitrogen has 15 neutrons. C. Nitrogen has 5 valence electrons. D. Nitrogen has 5 neutrons.

Conductivity in a metal results from the metal atoms having (1) high electronegativity (2) high ionization energy (3) highly mobile protons in the nucleus (4) highly mobile electrons in the valence shell

All atoms are neutral. explain the basis of this fact

What is the ph of a solution containing 0.12mol/l of nh4cl and 0.03 mol/l of naoh (pka is 9.25) ?

A sample of an unknown compound with a mass of 0.847 g has the following composition: 50.51 % fluorine and 49.49 % iron. When this compound is decomposed into its elements, what mass of each element would be recovered?

The thermal effect of the water formation reaction is 286 kj. what will be the thermal effect of its decomposition? why?