Someone help me cuz im yk lol

What pressure will be exerted by 0.675 moles of a gas at 25*c if it is in a 0.750-l container?

Write the symbol for every chemical element that has atomic number greater than 3 and atomic mass less than 12.0 u.

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