Chemistry 101 Introductory Chemistry Chapter 5 Molecules and Compounds

How many of each type of atom are there in the formula NH4C2H3O2?

N = 1, H = 7, C = 2, O = 2

What is the correct formula for the molecular compound heptaphosphorus octafluoride?

P7F8

What is the name of the molecular compound SF5?

sulfur pentafluoride

What is the proper name for HBr(aq)?

hydrobromic acid

Which among the following elements does NOT exist as a diatomic molecule in nature?

hydrogen

What is the name for HI(aq)?

hydroiodic acid

Ammonium fluoride is considered which of the following?

ionic compound

Which formula shown is incorrect for the name given?

magnesium nitrite: Mg(NO2)3

What is the name of HNO2?

nitrous acid

Although some substances we encounter in our routine lives are elements, most occur in the combined state.

True

What is the formula mass of sulfurous acid, H2SO3?

82.08 amu

What is the formula for an ionic compound made of aluminum and oxygen?

Al2O3

Which metal atom below cannot form a cation of several different charges?

Ba

If an oxyacid contains the sulfate oxyanion, then this acid has the name sulfurous acid.

False

The proper name for SF6 is sulfur tetrafluoride.

False

The subscripts in a chemical formula represent the relative mass of each atom in a chemical compound.

False

When elements combine to form compounds, their properties only change slight

False

The oxygen-to-hydrogen mass ratio of water is always 8.0 is an example of what fundamental law?

Law of Constant Composition

What is the correct name of the compound whose formula is BF3?

boron trifluoride

What is the formula for an ionic compound mad of carbon and oxygen?

carbon and oxygen do not form an ionic compound