What is the difference between a chemical reaction and a physical reaction?

A scientist can explain how the brain recognizes odors. True False

The decomposition of ammonia is: 2 NH3 (g) ? N2 (g) + 3 H2 (g). If Kp is 1.5 * 103 at 400°C, what is the partial pressure of ammonia at equilibrium when N2 is 0.10 atm and H2 is 0.

Silver metal that is exposed to the air tarnishes and becomes doing black overtime this is most likely the result of

Give three examples of an acid

How many Oxygen (O) atoms are in the following? H2O + CO2 3 2 4

Consider two solutions, solution a and solution b. [h+] in solution a is 370 times greater than that in solution b. part a what is the difference in the ph values of the two solutions?

All of the following are possible sources of error in a scientific investigation except for O measuring materials such as mass and volume incorrectly. o recording experimental data incorrectly. o having a constant in your experiment.

Do polyatomic ions have fixed charges?

Which type of organism is used to make bread rise when baking? A. plants B. protists C. yeast D. bacteria

How many particles are in 3.55 moles of Aluminum Sulfate