A compound that contains 30.4 % N and 69.6 % O has a molecular mass of 92 g/mol. Determine the empirical and molecular formulas.

Asample of radium-226 will decay 1/4 of its original amount after 3200years. what is the half-life of radium-226?

When you perform this reaction, what could remain at the end of the reaction? check all that apply. excess reactant aqueous copper chloride excess reactant aluminum oxygen product solid copper carbon dioxide product aqueous aluminum chloride water

Ascientist measures the speed of sound in a monatomic gas to be 449 m/s at 20∘c. what is the molar mass of this gas?