A sample of gas does 150J of work against its surroundings and loses 90J of internal energy in the process. Does the gas gain or lose heat, and how much?

What is a subatomic particle with a negative charge and very little mass?

How does a circuit breaker protect a refrigerator? a. when the current is too high, a metal strip in the fuse melts and opens the circuit. b. when the resistance is too high , a re-settable which opens a circuit c. when the current is too high , a re-settable switch opens the circuit d. when the resistance is too high a metal strip in the fuse melts and opens the circuit

What structural formula represents 4 electrons shared between two atoms?