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Consider the oxidation of sodium metal to sodium oxide described by the balanced equation: 4 Na(s) + O2(g) → 2 Na2O(s) As you can see there are letters in parentheses after each substance. Show you know the meaning of these letters by filling in what they stand for:

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Answer:

s stands for solid

g stands for gas

Explanation:

Na_{(s)}  + O_{2(g)}  →   2Na_{2}O_{s}

The lettered subscript describes the state of the matter of the reacting atoms,compounds and molecules. It also shows the state of matter of the products formed.

s stands for solid

g stands for gas

Some other reactions have l which is liquid and aq which is aqeous.

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