In a chemical reaction the physical states of each chemical species is denoted by a state symbol. Each state is represented by a lower case letter in parenthesis after the formula. For example: (s) indicates solid, (l) indicates liquid and (g) indicates gas. What does the state symbol (aq) indicate

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just did the assignment and the answer was #1 +2 n

every chemical equation adheres to the law of conservation of mass, which states that matter cannot be created or destroyed. therefore, there must be the same number of atoms of each element on each side of a chemical equation.