A student is investigating potential and kinetic energy by stretching a spring across a table. When the student lets go The spring recoils.

In the following redox reaction which is the oxidizing agent and which is the reducing agent? alcl3 + na nacl + al

The atomic number, or number, is the described as the number of in the nucleus of an chemical element.

Using this reversible reaction, answer the questions below: n2o4 2no2 (colorless) (reddish-brown) -as the temperature increased, what happened to the n2o4 concentration? -was the formation of reactants or products favored by the addition of heat? -which reaction is exothermic? right to left or left to right? -if the change of enthalpy of this reaction when proceeding left to right is 14 kcal, which chemical equation is correct? n2o4 2no2 + 14 kcal n2o4 2no2, hr = +14 kcal n2o4 + 14 kcal 2no2 n2o4 2no2, hr = -14 kcal