In a heat engine, if 500 J of heat enters the system, and the piston does 300 J of work, what is the final internal (thermal) energy of the system if the initial energy is 1,500 J?

800 J

1,300 J

200 J

1,700 J

Which of the following is not a solution? Saltwater Steel Vinegar Milk

What is the role of the aluminum foil removing the tarnish and exposing pure silver

5.00 mol of gas occupy a volume of 112 L at a pressure of 1.00 atm. What is the kelvin temperature of the gas?

Wet air has a total pressure of 765.0 mm Hg at 25 degrees C. The partial pressure of the water vapor is A mm Hg and the partial pressure of the dry air is ^ mm Hg.

Enter the molecular formula for butane, C4H10 express your answer as a chemical formula

What product (s) forms at the cathode in the electrolysis of an aqueous solution of k2so4?

What element is used as a shield to protect people from radioactive substances?

The frequency of a given region of the electromagnetic spectrum is more than 3 x 1019 HZ. Note that the speed of light is 2.998 x 108 m/s. Which waves are found in this region? A. gamma rays B. visible light C. microwaves D. radio waves E. x-rays

A farmer uses water to irrigate his potato crops. Which roles of water does this examplify

How was helium first discovered?