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200 cc of CO(2) is collected at S. T .P....

200 cc of `CO_(2)` is collected at S. T .P. when a mixture of acetylene and oxygen is ignited. Calculate the volume of acetylene and oxygen at S.T.P. in the original mixture.
`2C_(2)H_(2)(g)+5O_(2)(g)to4CO_(2)(g)+2H_(2)O(g)`

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To solve the problem, we need to determine the volumes of acetylene (C₂H₂) and oxygen (O₂) that were present in the original mixture, given that 200 cc of carbon dioxide (CO₂) is produced when the mixture is ignited. We will use the stoichiometry of the reaction provided. ### Step-by-Step Solution: 1. **Write the Balanced Chemical Equation:** The balanced equation for the combustion of acetylene is: \[ 2C_2H_2(g) + 5O_2(g) \rightarrow 4CO_2(g) + 2H_2O(g) ...
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