Como puedo cambiar los combustibles fósiles o energías contaminantes por alternativas más amigables con el ambiente

Measuring which physical property is most likely to produce the most precise results when trying to identify a substance

Which statement about hf is true? it is zero for any compound in its standard state. it is positive when the bonds of the product store more energy than those of the reactants. it is negative when a compound forms from elements in their standard states. it is zero for any element that is in the liquid state.

What happens to the temperature of a substance when the average kinetic energy of its particles increases?