Is the dissolving process for most salts endothermic or exothermic?

One of the more important chemical reactions of the alkanes is

At a constant temperature, 600 mL of an ideal gas is at a pressure of 760 mmHg. If the volume is decreased to 300 mL, the pressure of the gas will be

How many moles of Br atoms are in. 5 mol of Br2 molecules

Suppose you want to make 100 grams of water, what is the molar mass of water

Count the total number of atoms in CaCO3: 2 3 4 5 6

Which statement is true according to the kinetic theory? 1. Moles of different gases with the same mas and temperature always have the same average density. 2.

A substance with a pH of 9 has A) no H30 + ions or OH - ions. B) more H30 + ions than OH - ions. C) more OH - ions than H30 + ions. D) the same number of H30 + ions as it does OH - ions.

Consider the following quantities used in thermodynamics: E, H, q, w, S, G. How many of them are state functions? a. 2 b. 0 c. 3 d. 1 e. 4

What are some good problem statements

A 5.00L reaction vessel is filled with 1.00mol of H2, 1.00mol of I2, and 2.50mol of HI. If equilibrium constant for the reaction is 129 at 500k, what are the equilibrium concentrations of all species?