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- 2. What is the theoretical yield of Compound Y if you have 8.55 g of Reactant X reacted with an excess of Cr2O72? Balance the chemical equation. OH Compound X (a) OH + Cr₂O72- OH ° Compound Y OH + Cr³+ Fill in the squares in the following chemical equations: NaOH/H₂O EtOHWrite the combustion reaction of C6H14+O2—->CO2+H2O2) Complete the following chemical equation. он + H20 HO.