The density of copper is a... a. chemical property
c. chemical change
b. physical property
d. physical change

Determine the percent sulfuric acid by mass of a 1.61 m aqueous solution of h2so4. %

Calculate the molar mass of aluminum oxide (al2o3). express your answer to four significant figures.

Butane gas reacts with oxygen gas to give carbon dioxide gas and water vapor (gas). if you mix butane and oxygen in the correct stoichiometric ratio, and if the total pressure of the mixture is 390 mmhg, what is the pressure (in mmhg) of water vapor after the reaction is completed (temperature and volume do not change).