How many neutrons does sodium have? What is the chemical symbol for sodium? How many protons does sodium have? How many electrons does it have in the n = 2 orbit?

How can a permanent magnet be damaged? a. cut the magnet in half b. heat the magnet up c. strike the magnet with a heavy blow d. both the second and third choices above

A 0.070 M solution of the salt NaB has a pH of 9.60. Calculate the pH of a 0.010 M solution of HB. Or, what is the Kb of HB?

The density of mercury is 13.6 g/cm3. Therefore, the specific gravity of mercury is 13.6. true or false

Use the periodic table to determine the charge of the ions below. Select the correct answer from the drop-down menus.

What are the 3 types of catalyst?

Which is the atomic number of an atom with six valence electrons

O2 + CS2 → CO2 + SO2 Which of the following shows the equation balanced?

Convert 970. mm Hg to atm.

The addition of a catalyst in a chemical reaction (A) increases the concentration of products at equilibrium. (B) increases the fraction of reactant molecules with a given kinetic energy.

Is fire hot or cold?