created Is C,H,OH being created or destroyed by the chemical O destroyed reaction? neither created nor destroyed ? If C,H,OH is being created or destroyed, what is the rate at which it is being created or destroyed 100 seconds after the reaction starts? Round your answer to 2 significant digits. Also be sure your answer has the correct unit symbol. If C,H,OH is being created or destroyed, what is the average rate at which it is being created or destroyed during the first 100 seconds of the reaction? Round your answer to 2 significant digits. Also be sure your answer has the correct unit symbol. olo

list at least three quantities that must be conserved in chemical reactions.

Polychlorinated biphenyls (PCBs) have been used extensively as dielectric materials in electrical transformers. Because PCBs have been shown to be potentially harmful, analysis for their presence in the environment has become very important. PCBs are manufactured according to the following generic reaction: C12H10+nCl2C12H10nCln.+nHCl This reaction results in a mixture of PCB products. The mixture is analyzed by decomposing the PCBs and then precipitating the resulting Cl asAgCl. a. Develop a general equation that relates the average value of n to the mass of a given mixture of PCBs and the mass of AgCl produced. b. A 0.1947-g sample of a commercial PCB yielded 0.4791 g of AgCl. What is the average value of n for this sample?

A student weighs out a 4.80-g sample of aluminum bromide, transfers it to a 100-mL volumetric flask, adds enough water to dissolve it, and then adds water to the 100-mL mark. What is the molarity of aluminum bromide in the resulting solution?