Question 3 If some solution splashed onto the bench when the aluminum was added into the beaker, which of the following would happen to the experimentally determined %Cu? The experimental result is higher than the real one. O No changes O Cannot determine the direction O The experimental result is lower than the real one. Question 4 What gas is produced in the reaction of aluminum and HCI? O chlorine gas hydrogen gas O carbon dioxide O axygen

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Stoichiometry

Stoichiometry is a chemical division that evaluates the quantitative content of the chemical process with the help of the reacting molecules or products taking part in the reaction. The term “stoicheion” in “Stoichiometry”, is an old Greek term for "element" whereas “metron” means "measure".