Sealed reach AN exact of now Initially o, 16 mol to excess Sess are in 2 dm Container and the system is allowed equilibrium a goc Pb(NO3)2 solution is golded to the container so that ALL the H₂ Seg) present the container at EQUILIBRIUM converted Pbs as acwrding to the following balanced equation. Pb (NO2)2 laq & Hasys RSG + HINO, (aq) The mass of the Pbs precipitate is 2,39 g 7 Caleulate the equilibrium constant ke for the reaction Hergo S e Hasus at 90 °C ​

One way in which the useful metal copper is produced is by dissolving the mineral azurite, which contains copper(ii) carbonate, in concentrated sulfuric acid. the sulfuric acid reacts with the copper(ii) carbonate to produce a blue solution of copper(ii) sulfate. scrap iron is then added to this solution, and pure copper metal precipitates out because of the following chemical reaction: (s) (aq) (s) (aq) suppose an industrial quality-control chemist analyzes a sample from a copper processing plant in the following way. he adds powdered iron to a copper(ii) sulfate sample from the plant until no more copper will precipitate. he then washes, dries, and weighs the precipitate, and finds that it has a mass of .

Is the idea of spontaneous generation supported by redi's experiment? justify your answer in 2-3 sentences?

Robert leaves a chocolate bar in his car while attending school all day. when he goes to his car in the afternoon, the bat has changed into gooey liquid. what happened to the chocolate bar