You are given 10.0 grams of a mixture of NaNO3 and KF. You dissolve this
mixture in 100.0 grams of water, and the temperature rises by 1.02°C. Calculate the mass of each salt in the original mixture. Assume that the specific heat of the solution is 4.18 J/g°C.
Useful information: Enthalpy of solution of NaNO3: +20.5 kJ/mol
Enthalpy of solution of KF: -17.7 kJ/mol© BrainMass Inc. brainmass.com October 16, 2018, 5:28 pm ad1c9bdddf
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This solution provides step-by-step explanations in how to determine the mass of each salt in the original mixture using the specific of solution and enthalpy of the solution.
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3.) The specific heat of aluminum is 0.89 J/g, degrees Celsius. How much energy is required to raise the temperature of a 15.0 g aluminum can 18 degrees Celsius?
4.) One liter of an ideal gas at 0 degrees Celsius and 10 atm was allowed to expand to 1.89 L against a constant external pressure of 1 atm at a constant temperature. The enthalpy change (delta H) for this process is -901 J. Calculate q, w, and delta E.
5.) The heat capacity of a bomb calorimeter was determined by burning 6.79 g methane (heat of combustion= -802 kJ/mol) in the bomb. The temperature changed 10.8 degrees Celsius.
a. What is the heat capacity of the bomb?
b. A 12.6 g sample of acetylene, C2H2, produced a temperature increase of 16.9 degrees Celsius in the same calorimeter. What is the heat of combustion of acetylene (kJ/mol)?