What volume of sodium oxide can be produced if 14 moles of strontium oxide react?

In a heat of an engine, if 700 j enters the system, and the piston does 400 j of work what is the final internal (thermal) energy of the system if the initial energy is 1,500 j

Which statement best describes what happens when molecular compounds melt

Is the idea of spontaneous generation supported by redi's experiment? justify your answer in 2-3 sentences?