Are these compouds - ammonia and NH3 ionic or covalent?

An unusually long period during which rainfall is below average

Describe an ideal gas. Explain why it is impossible for an ideal gas to exist.

Which Period 4 element has the most metallic properties? (1) As (3) Ge (2) Br (4) Sc

Which atmosphere layer contains electrically changed particles that reflect radio waves?

A solution is made by mixing equal masses of methanol, CH4O, and ethanol, C2H6O. How would you determine the mole fraction of each component to at least three significant figures?

Give me an example of lustre that is shiny and dull.

Which of the following animal niches will be filled as in ecosystem Begins the stage of ecological succession

List the five major pollutants in the United States

The net gain of atp per molecule of glucose fermented is

What is the name of this compound? CH3-CH2-CH2-CH2-O-C6H5 butylphenyl ether cyclohexylbutyl ether phenylbutyl ether butylcyclohexyl ether