For the reaction 3P(g) + Q(g) → 3R(g) , ΔU0 = -21 KJ and ΔS0 = -88.2 J/K. Find ΔH and ΔG and predict whether the reaction is spontaneous at 298 K .

Which factor is likely to impact the possible number of compounds ?

Which of the following is not true about the atomic model of substances?

Match the term to its description match term definition chemical energy a) internal energy caused by vibrations of atoms and molecules electrical energy b) electromagnetic energy that travels in waves radiant energy c) the movement of an electrical charge thermal energy d) potential energy stored in the bonds between atoms