gas in a cylinder is compressed by a piston. If the work done by the piston is 451 J, and the system loses 325 J to the surrounding as heat, calculate the change in energy in J, kJ, BTU, and calories.

A gaseous system has 71 J of work done on it by surroundings and increases its internal energy by 69 J. Calculate the amount of heat associated with this scenario. 140 J of heat is released by the system. 2 J of heat is released by the system. The heat of the system remains constant. 2 J of heat is absorbed by the system. 140 J of heat is absorbed by the system.

When 1.836 grams of sucrose (Molar mass 342.3 g/mol) is burned in a bomb calorimeter, the temperature of the calorimeter increases from 22.41°C to 26.63°C. If the heat capacity of the calorimeter is 4.900 kJ/°C, what is the heat of combustion of sucrose?

10 A student heats 84.17 mL of water to 95.27°C using a hot plate. The heated water is added to a calorimeter containing 73.92 mL of cold water. The water temperature in the calorimeter rises from 2.15°C to 37.48°C. The specific heat capacity of water is 4.184 J and the density of water is g. °C 1.00 mL Assuming that heat was transferred from the hot water to the cold water and the calorimeter, determine the heat capacity of the calorimeter. J Heat capacity of calorimeter = °C

A change in a system occurs such that 31.1 J of work is done by the surroundings and 22.4 J of heat flows from the system to the surroundings. What is the change in internal energy of the system?

Gasoline and ethanol can both be used as a fuel source in cars.  However, the potential chemical energy is not equal.  A fuel mixture uses 85% ethanol and 15% gasoline called E85.  Assume a car is rated at 28.0 miles/gallon using gasoline only at $3.50/gallon and 22.5 miles/gallon using E85 at $2.85/gallon.  How much would it cost for using each fuel to drive 500.0 miles?

The air within a piston equipped with a cylinder absorbs 545 J of heat and expands from an initial volume of 0.10 L to a final volume of 0.83 L against an external pressure of 1.0 atm. What is the change in internal energy of the air within the piston?         Express your answer in joules.

if a system does 77.0kj of work on its surroundings and releases 105 kj of heat, what is the change in the internal energy of the system in kj?

Air in an inflated balloon (system) is cooled and loses 525. J of heat. The surroundings also compress it, doing  91.7 J of work. What is the change in internal energy for the system?

A 44.0 g sample of unknown metal at 99.0°C was placed in a constant-pressure calorimeter containing 80.0 g of water at 24.0°C, the final temperature of the system was found to be 28.4°C. Calculate the specific heat of the metal.