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W5: Problem Solving

Reaction Stoichiometry

7.47. Gallium chloride is formed by the reaction of 2.6 L of a 1.44 M solution of HCl according to the following equation: 2Ga + 6HCl ⟶ 2GaCl3 + 3H2 . (a) Outline the steps necessary to determine the number of moles and mass of gallium chloride. (b) Perform the calculations outlined

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Enthalpy

9.51. A sample of 0.562 g of carbon is burned in oxygen in a bomb calorimeter, producing carbon dioxide. Assume both the reactants and products are under standard state conditions, and that the heat released is directly proportional to the enthalpy of combustion of graphite. The temperature of the calorimeter increases from 26.74 °C to 27.93 °C. What is the heat capacity of the calorimeter and its contents?

Phyllis Mugure

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