Can anyone answer the riddle of the day; Is water wet?

Which electron shell contains the valence electrons of a radium atom in the ground state? 1. the sixth shell 2. the second shell 3. the seventh shell 4. the eighteenth shell

At equilibrium the total amount of the products

Which of the following distinguishes a nuclear reaction from a chemical reaction? a. It involves atoms. b. There is an exchange of electrons. c. Mass is conserved. d. There is a change in the nucleus.

200. Grams of copper at 15°C are mixed with 200 grams H20 at 60°C. If the final temperature of the mixture is 42.7oC, what was the mass of the water?

The energy put into a machine to make it work.

How many bromine atoms are present in 39.9 g of CH2Br2

Chemists use activity series to determine whether which type of reaction will occur?

1. Does the temperature rise or drop when you mix vinegar and baking soda. 2. Does the temperature rise or fall when you mix baking soda and water.

Use the balanced equation from number four above to determine the limiting reactant if we had a mixture of 5.0 moles of Fe and 4.0 moles of O2.

Using the kinetic theory what happens to oxygen particles as they are cooled