[cu(nh3)4]^+2 solutions exhibit a deep blue-violet color. how can you use spectrophotometry to confirm that this reaction has occurred and that the product formed is in fact tetraamminecopper (ll) sulfate? would you expect the wavelength of maximum absorbance (lambda max) for cu(nh3)4^+2 to be greater than or less than lambda max for cu(h20)6^+2? explain

the major pests we deal with are insects, weeds and fungal diseases. a pesticide is a product, whether organic or chemical, used to kill the target pest. there are other techniques gardeners should use that can prevent the severe infestations that make the use of pesticides necessary

nacl or sodium chloride is an ionic compound. this is because an ionic compound pertains to a compound that consists of positively and negatively charged ions. in this case, na (sodium) has a tendency to lose one electron when it reacts with with other atoms, so the resulting sodium ion contains 11 protons and 10 electrons, thus making it positively charged (na+), when chlorine reacts, it usually gains one electron to form an ion called chloride, thus making it negatively charged ( since the ions are oppositely charged, they attract.