The wavelength of a specific photon in the infrared spectrum is 4 x 10-6 meters. Given that the speed of light is 2.998 * 108 m/s, what would be the frequency of this infrared wave?
A. 11.992 x 102 Hz
B. 0.7495 x 10-14 Hz
C. 11.992 x 10-2 Hz
D. 0.7495 x 1014 Hz

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.

the right answer is c i just did the question.