Will mark 1. consider the two half-reactions below. (attached). the reactant lead, pb, is a. oxidized in both b. reduced in both c. disproportionated in both d. oxidized in i and reduced in ii

Dumbledore decides to gives a surprise demonstration. he starts with a hydrate of na2co3 which has a mass of 4.31 g before heating. after he heats it he finds the mass of the anhydrous compound is found to be 3.22 g. he asks everyone in class to determine the integer x in the hydrate: na2co3·xh2o; you should do this also. round your answer to the nearest integ