What is the Energy of a Photon that has a frequency of Hz?

Also, I need an actual explanation on how to solve this...
Only answer if you are going to explain how to do it.

If the same amount of cacl2 is added to equal volumes of water and maple syrup, which will have the higher temperature?

Which buffer would be better able to hold a steady ph on the addition of strong acid, buffer 1 or buffer 2? explain. buffer 1: a solution containing 0.10 m nh4cl and 1 m nh3. buffer 2: a solution containing 1 m nh4cl and 0.10 m nh3

Which of the following is true about a carbonated soft drink? . the carbon dioxide is the solvent, and water is the solute.. the water is the solution, and carbon dioxide is the solvent.. the carbon dioxide is the solution, and the water is the solvent.. the water is the solvent, and the carbon dioxide is the solute.. .