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Hi there.
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In this question, we are given this balanced equation.
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And balanced equations are very important when we are trying to do math with our equations.
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In other words, when we're trying to use or to do some stoichiometry.
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Because the balanced chemical equation gives us the ratio in which the reactants react and the products are formed.
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And the information that gives this to us are the coefficients in the balanced equation.
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So from this equation, that we have here, the coefficients tell us that two moles of the sodium chloride are going to produce two moles of sodium chloride and three moles of the oxygen.
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This is known as the mole ratio.
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So we can use the mole ratio to solve this equation because we are told that we're starting with eight moles of the naclo3 and we want to know how many moles of oxygen we're going to produce.
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So let's go ahead and set this up using a little bit of dimensional analysis.
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So we have 8 moles of nacl -o -3.
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That's what we're starting with...