physics
A cylinder contains 3.5 L of oxygen at 350 K and 2.5 atm . The gas is heated, causing a piston in the cylinder to move outward. The heating causes the temperature to rise to 640 K and the volume of the cylinder to increase to 9.5 L. What is the gas pressure?
physics
An ideal gas at 20 C consists of atoms 22*10^22. 4.5 J of thermal energy are removed from the gas. What is the new temperature in C?
physics
The label on a candy bar says 410 Calories.Assuming a typical efficiency for energy use by the body, if a 74kg person were to use the energy in this candy bar to climb stairs, how high could she go?
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