3. Chemical Reactions

Elemental analysis of a pure compound indicated that the compound had 72.2% C, 8.50% H and the remainder as O. If 0.250 moles of the compound weighs 41.55 g, what is the molecular formula of the compound?

Dichloroethane, a compound that is often used for dry cleaning, contains carbon, hydrogen, and chlorine. it has a molar mass of 99 g/mol. analysis of a sample shows that it contains 24.3% carbon and 4.1% hydrogen. what is its molecular formula?

Find the molecular formula of each compound

Of the following molecular formulas for hydrocarbons which is an empirical formula

Elemental analysis of the unknown gas from part a revealed that it is 30.45% N and 69.55% O by mass. What is the molecular formula for this gas?