5 moles de un gas ideal se expanden isotérmicamente de 2L hasta 8L a 127 grados c ¿cual es el trabajo realizado?

Which sentences describe disadvantages of burning fossil fuels instead of using hydrogen fuel cells? burning fossil fuels contributes to climate change. burning fossil fuels takes place inside expensive fuel cells. fossil fuels aren't widely available, but pure hydrogen is. fossil fuels are nonrenewable.

Look at the potential energy diagram for a chemical reaction. which statement correctly describes the energy changes that occur in the forward reaction?

When an object is heated it contracts. a. true b. false