Exam 3: Molecules, Compounds, and Nomenclature

Combustion analysis of 1.200 g of an unknown compound containing carbon, hydrogen, and oxygen produced 2.086 g of CO₂ and 1.134 g of H₂O. What is the empirical formula of the compound?

Calculate the molar mass of H₂CO₃.

Describe a structural formula.

Identify the formula for the compound formed between potassium and sulfur.

An ionic bond is best described as ________.

Describe the difference between ionic and molecular compounds. Give an example of each.

Identify the formula for chromium(II) nitrate.

________ bonds occur between two or more nonmetals, which involve the sharing of electrons between the atoms.

Combustion analysis of an unknown compound containing only carbon and hydrogen produced 0.2845 g of CO₂ and 0.1451 g of H₂O. What is the empirical formula of the compound?

Calculate the mass percent composition of lithium in Li₃PO₄.

Which of the following exists as a diatomic molecule?

How many millimoles of Ca(NO₃)₂ contain 4.78 × 10²² formula units of Ca(NO₃)₂? The molar mass of Ca(NO₃)₂ is 164.10 g mol^-1.

A covalent bond is best described as ________.

How can one compound contain both ionic and covalent bonds? Give an example.

Why aren't prefixes used in naming ionic compounds?

What is the correct formula for lead (II) chloride?

Which of the following is a molecular compound?

Identify the formula for magnesium nitrate hexahydrate.

Identify the name for aqueous H₂SO₄.

Give the name for HNO₂.