Supposed you have an unknown solution that could contain Ag+, Pb2+, or Ca2+. No precipate formed after the addition of NaCl but a precipitate formed when Na2CO3 was added. Which cation(s) is(are) in the unknown solution? O Ag" O Ca2+ & Ag* O Pb2+

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Photochemistry

Photochemistry is the part of chemistry that studies the various mechanisms of reactions that are triggered by the presence of light energy. It also helps to study the changes involved in a molecule that can undergo the absorption of radiation.