Calculate the energy of a photon of electromagnetic radiation whose frequency is 2.80×1014 s−1 .
Express your answer with the appropriate units.

3.) for each of the following compounds, draw the major organic product of reaction with hcl or naoh and circle whether the starting materials and products will be more soluble in organic solvent or water benzoic acid + hcl: benzoic acid + naoh: oh benzoic acid water/organic water organic fluorenone hс: fluorenone + naoh: fluorenone water/organic water/organic веnzocaine + hci: benzocaine + n»oh: h2n benzocaine water/organic water organic o=

What is the relation between concentration of reactants and the rate of chemical reaction?

Consider the nuclear equation below. 239/94 pu—-> x+ 4/2 he. what is x?