An increase in temperature affects the reaction rate by A) decreasing the velocities of particles that collide in the reaction.
B) increasing the number of molecules that have sufficient kinetic energy to react.
C) increasing the number of molecules that have sufficient potential energy to react.
D) decreasing the energy that particles need to overcome the energy activation barrier.

your parents i think this could be it

the enthalpy of formation of water is given as -285.8kj/mol, which states that the enthalpy of formation is negative.

negative enthalpy of formation indicates that the heat is released during the reaction process. the heat is released from reaction to the surroundings the enthalpy is expressed with a negative sign with the energy given out in the reaction process.

the formation of water takes place by giving out heat which is -285.8 kj/mol.