Propose a structure for a compound a that has an infrared absorption at 1820 cm–1 and a single proton nmr absorption at δ 1.5. compound a reacts with water to give dimethylmalonic acid and with methanol to give the monomethyl ester of the same acid. (compound a was unknown until its preparation in 1978 by chemists at the university of california, san diego.)

What is the percentage by mass of silicon (si) in iron aluminum silicate (fe3al2(sio4)3)?

Ase your answer to this question on the information below.hydrocarbons and fissionable nuclei are among the sources used for the production of energy in the united states. a chemical reaction produces much less energy than a nuclear reaction per mole of reactant.the balanced chemical equation below represents the reaction of one molecule of a hydrocarbon with two molecules of oxygen.chemical equation: ch4 + 2o2 → co2 + 2h2o + 1.48 × 10−18 jthe nuclear equation below represents one of the many possible reactions for one fissionable nucleus. in this equation, x represents a missing product.nuclear equation: write an isotopic notation for the missing product represented by x in the nuclear equation.

How does climate change cause the ocean's thermohaline current to slow down?