Under what conditions will a low temperature make a reaction spontaneous? A.
If a catalyst is used in the reaction
close
B.
If the reaction is endothermic
done
C.
If H and S are both negative
D.
If H and S are both positive
the answer is c for 4 p 3 x

Which of the following statements is true? a. most heat energy is easily recovered and used for useful actions. b. friction causes molecules to vibrate more slowly. burning air and gasoline in an c. engine changes chemical energy into mechanical energy. it is impossible to d. change mechanical energy into mechanical energy.