An industrial-scale process for making acetylene consists of the following sequence of operations: CaCO3 →          CaO +                 CO2limestone          lime             carbon dioxideCaO + 3 C →            CaC2          +               CO                             calcium carbide    carbon monoxideCaC2 + 2 H2O   →          Ca(OH)2    +          C2H2                                        calcium                acetylene                                      hydroxide What is the percentage yield of the overall process if 2.32 metric tons C2H2 is produced from 10.0 metric tons limestone (1 metric ton 5 1000 kg)?

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