In a lab you are measuring the heat of reaction for an unknown reaction that occurs in solution: A + B ----> C + D You will mix 250 mL of solution A and 225 mL of solution B. The initial temperature of the solutions is 27.9 degrees Celsius. The final temperature of the solution after reaction is 68.4 degrees Celsius. First determine the Atfor the experimental reaction.

Q: For questions 12, 13, and 14: predict the formulas of the products for each reaction and WRITE them…

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Q: The reaction of ethanol with oxygen to yield carbon dioxide and water. (This is the reaction in a…

A: Combustion of ethanol

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Q: 35. An experiment uses a catalyst that is 23.3g Co, 25.3g Mo, and 51.4g Cl. What is the empirical…

A: Given:  Mass of Co in catalyst : 23.3 g  Mass of Mo in catalyst: 25.3 g  Mass of Cl in catalyst:…

Q: Classify each chemical reaction:

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Q: balancing and Identifying Chemical Reactions

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A: First we would write the sandwich making as a reaction between bread and cheese.  a.) Then using the…

Q: Select all the true statements about the reaction shown below.  NaCl → Na + ClNaCl → Na + Cl…

A: Solution- Option 1st correct Sodium chloride there is a reactant which is after reaction divided…

Q: When exposed to oxygen and heat, copper metal oxidizes and copper (II) oxide appears on the surface.…

A: This is a redox reaction, where copper is oxidized to copper (II) oxide and oxygen is reduced.

Q: What mass of phosphoric acid in grams is needed to produce 4.59 mol of water?

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Q: Given the following three sequential reactions: 1) N₂(g) + 3H2(g) → 2NH3(g) 2) 4NH3(g) + 5O2(g) →…

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Q: Hydrogen peroxide decomposes as shown below: 2 H2O2 → 2 H2O + O2 molar mass H2O2 = (34.0 g/mol)…

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Q: C4H10 + O2 → CO2 + H2O (unbalanced) What mass of CO2 is produced in the complete combustion of 78.8…

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Q: Classify each of the following reactions as a combustion, decomposition, combination, or other.…

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Q: What is the law of mass action? O The ratio of the product concentrations to the reactant…

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Q: What was the percentage by mass of Cr in the ore sample?

A: Absorbance A = 1.618Molar absorptivity ε = 2.81 Lmoll = 1 cm

Q: Write the balanced equation for the decomposition of potassium chlorate and potassium chloride…

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Q: When heated, solid calcium chlorate decomposes into calcium chloride solid, releasing oxygen gas.

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Q: 5. What is meant by the phrase “reaction to completion”?

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Q: Classify each chemical reaction: Reaction Cl₂(g) + CuBr₂ (aq) → CuCl₂ (aq) + Br₂ (1) FeCl₂ (aq) +…

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Q: Solid potassium iodide decomposes into iodine gas and solid potassium ?

A: Potassium = K Iodine = I2 potassium iodide = KI

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Q: What mass of carbon dioxide is produced upon the complete combustion of 23.7 L of propane (the…

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Q: The concept of determining which reactant is limiting and which is in excess is akin to determining…

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Q: Balance the following chemical equation (if necessary): Mg(s) + N,(g) → Mg,N,(s)

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Q: What is the sum of coefficients from the following reaction (both products and reactants)? X(CO3)3…

A: Heating of any carbonate generally forms oxide and carbon dioxide gas.