1.00 mole of an ideal diatomic gas (for which Cv 5R/2) is in a rigid container with a constant volume of 2.00 L. The gas is heated from 250.0 K to 300.OK. Calculate the AS(gas) for this process, in J/K.

The thermite reaction, used for welding iron, is the reaction of FegO4 with Al. 8 Al (s) + 3 Fe3O4 (s) > 4 Al203 (s) + 9 Fe (s) AH° = -3350 kJ Because this large amount of heat cannot be rapidly dissipated to the surroundings, the reacting mass may reach temperatures near 3000°C. How much heat (in kJ) is released by the reaction of 16.5 g of Al with 76.7 g of Fe304? Enter your numerical answer in units of kJ.

A 0.576 g sample of liquid C5H12 was combusted using excess oxygen gas inside a bomb calorimeter, with the products being carbon dioxide gas and liquid water. The calorimeter's heat capacity is 4.957 kJ °C^-1. If the temperature inside the calorimeter increased from 25.0 °C to 35.1 °C, determine A,U for this reaction in kl mol (with respect to C3H12). Do not worry about how realistic the final answer is.

A styrofoam calorimeter contains 60.0 mL of o.750 M H.C,H 0, at 3 6 22.8°C. When 9.83 g NaHCO, is added to the calorimeter, the temperature of the resulting solution decreases to a minimum of 5.1°C. The reaction that occurs is: HаCоН,О-(aд) + 3 NaHCO3(aq) > NagCgHsО7(ag) + 3 СО2(9) + 3 Н-0(1) AHreaction = ??? What is the (experimental) enthalpy change for this reaction, AH ? (Use the total mass of reaction solution and 4.18 J/(g °C) for the specific heat of the solution in your calculations.) kJ/mol

. Adding 2.00g Mg metal to 95.0 ml HCL in a coffee cup calorimeter leads to an increase of 9.2 C....If the molecular heat capacity of 1.0 M HCl is the same as that for water [cp=75.3J/(molxC)] what is dHrxn?

30 moles of a gas are contained in a 50 L container subjected to 5 atm, if its temperature decreases from 85 ºC to 27 ºC in an isochoric process, known its molar specific heat Cv = 7/2 · R (where R = 8.31 J / mol · K).b) Determine U, H, Q, and W

At constant volume, the heat of combustion of a particular compound is –3853.0 kJ/mol. When 1.873 g of this compound (molar mass = 162.47 g/mol) was burned in a bomb calorimeter, the temperature of the calorimeter, including its contents, rose %3D by 6.195 °C. What is the heat capacity (calorimeter constant) of the calorimeter? calorimeter constant: kJ/ °C & #3 2$ 3 4 7 8. T Y S D F G H K C V N R

Consider a balloon filled with 2115 L of helium at 1.00 atm pressure and 45.5°C. The temperature of the balloon is decreased to 26.3°C with the pressure remaining at 1.00 atm. What is ∆E (in kJ) for this change? (Assume ideal conditions. The molar heat capacity for He at constant pressure, Cp, is 20.8 J/°C･mol.)

In a coffee cup calorimeter, 10.0mL of 1.00M AgNo3 and 10.0mLof 1.00M NaCl are mixed and the following reaction occurs (assume reaction goes to completion) Ag+ (aq) + Cl-(aq) ----> AgCl(s) The 2 solutions are intitially at 25.0C and the final temperature is 36.2C. Assuming density of the solution is 1.00g/mL and the heat capactity of the solution is 4.18J/K/g. Calculate q for the reaction in KJ