When elements with four electrons in the outermost shell react chemically, they

A. Always gain 4 electrons

B. Always lose 4 electrons

C. May lose, gain, or share 4 electrons

D. May lose or gain 4 electrons

What is the heat of combustion per mole of quinone?

Write a balanced equation for the complete oxidation reaction that occurs when propane (C3H8) burns in air.

Distinguish Between matter and mass

Suppose you have 300.0 mL of a 0.1000 M solution of a strong acid (HCl), and you add this to 100.0 mL of a 0.0200 M solution of a strong base (Ba (OH) 2). What is the new pH?

The element rubidium has two naturally occurring isotopes. The atomic mass of 85Rb (72.17 percent abundant) is 84.911794 amu. Determine the atomic mass of 87Rb (27.83 percent abundant). The average atomic mass of Rb is 85.4678 amu.

Substances with strong intermolecular bonds vaporize _ than those with weaker bonds. faster more easily at the same rate slower

How many dozen kernels of corn are in a 50 pound bag of corn

How does magnesium obey the octet rule when reacting to form compounds

Is heat conductivity a physical or chemical property?

When 5800 joules of energy are applied to a 15.2-kg piece of lead metal, how much does the temperature change by