If a system has 65.0 J of heat added to it, and the system does 25.0 J of work on its surroundings, what is the change in the internal energy of the system, in J?

Select the correct answer. what is the nature of the se-cl bond in a molecule of selenium chloride (secl2) if the electronegativity value of selenium is 2.55 and that of chlorine is 3.16?

Balance this equation co2(g) + h2o (g) show that the balanced equation obeys the law if conversation of mass

Which of the following elements would you expect to have the lowest ionization energy value? fluorine, lithium, neon, nitrogen