B: $8 + (-3) + (-5) = -10$ kJ

Mon, 04 May 2026 07:43:45 +0000

Understanding Energy in Chemistry: B = $8 + (-3) + (-5) = -10$ kJ Explained Simply In chemistry, understanding energy changes during chemical reactions is fundamental to comprehending how reactions proceed and whether they occur spontaneously. Sometimes, a simple algebraic equation can reveal much about thermodynamics—the science behind heat exchange in reactions. One such example is the calculation B = $8 + (-3) + (-5) = -10$ kJ. But what does this really mean? Let’s break it down. ### What Does the Equation Mean? This equation represents the net energy change (ΔU or internal energy change) in a chemical process, measured in kilojoules (kJ). Here, B corresponds to the overall energy change, calculated as: