In an isobaric process, expansion should result in a decrease in pressure. which of the following must be added to the system to prevent this pressure drop and maintain isobaric conditions? a. heat (q) b. work (w) c. internal energy (u) d. none of these

Could we see a galaxy that is 20 billion light-years away?

The flame produced by the burner of a gas (propane) grill is a pale blue color when enough air mixes with the propane (c3h8) to burn it completely. for every gram of propane that flows through the burner, what volume of air is needed to burn it completely? assume that the temperature of the burner is 195.0°c, the pressure is 1.05 atm, and the mole fraction of o2 in air is 0.210.

Ideal meters problem. what internal resistance is ideal for a voltmeter? what internal resistance is ideal for an ammeter?