How many moles of oxygen are in a
7.68 l container at 355 k and exerting a
pressure of 8.57 atm on the walls of the
container?

Athe top of a hill, an athlete on a skateboard has x joules of mechanical energy. how much mechanical energy will she have at the bottom of the hill? ignore the effects of friction.

The chemical formula for emerald is be3al2(sio3)6.an emerald can be decided as

Aman applies a force of 500n to push a truck 100m down the street how much does he do?