The element has a mass of twenty and is a gas

Here’s one way to follow the scientific method. place the missing steps in the correct position in the process

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

Consider the nuclear equation below. 239/94 pu—-> x+ 4/2 he. what is x?