Waves that require a medium through which to pass are called electromagnetic waves true or false

Coal and oil are fossil fuels that were formed hundreds of millions of years ago. What were the three main factors needed to turn the remains of dead organisms into fossil fuels?

What will for if sodium give away one electron?

What noble gas is magnesium closest to on the periodic table

All the molecules of a substance possess the "average kinetic energy" value.

a mixture of gases contains He (g) and Ne (g). the total pressure of the atmosphere in the container is 600 mmHg and the partial pressure of Ne (g) is 439 mmHg. Calculate the partial pressure of He (g) one the container.

How many grams of chromium metal are plated out when a constant current of 8.00 a is passed through an aqueous solution containing cr3 + ions for 160. minutes?

During which stage of a thunderstorm does rain begin to fall? a. The development stage c. The mature stage b. The precipitation stage d. The waxing stage

What is released in the process of an atom moving from an excited level to a lower energy level?

Which two properties are characteristic of ionic compounds?

explain why the hydrogen atoms in a hydrogen gas molecule form nonpolar covalent bonds but the oxygen and hydrogen atoms in water molecules form polar covalent bonds