A compound is comprised of sodium and element X. The compound has a molar mass of and is sodium by mass. The compound consists of a 1:1 ratio between sodium and element X. Find the molecular and empirical formulas of the compound, including the identity of element X.

A compound is comprised of sulfur and element X. The compound has a molar mass of and is sulfur. Analysis shows the compound has twice as much sulfur as element X. Find the molecular and empirical formulas for the compound, including the identity of element X.

Which of the following is an intrinsic physical property of a chemical substance?

A compound is comprised only of carbon and hydrogen. The molar mass of the compound is and the compound is carbon by mass. What is the empirical formula?

A compound is hydrogen and oxygen by mass. What is the name and molecular formula of this compound?

Which of the following is NOT true of the law of constant composition?

A compound that is formed in the mechanism of a reaction but does not appear in the overall reaction is referred to as a(n) __________.