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02-29-2008, 08:57 PM
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| help with chemistry Review !!!!!!!? Im freaking out no this iis not homework so please help!!!! Phosphorous trichloride, PCl3, reacts with water to form phosphorous acid, H3PO4, and hydrocholoric acid: PCl3+ 3H2O> H3PO3+3HCL a. what is the limiting reactant when 10.0g of PCl3 is mixed with 12.4 g of H2O? b.what mass of HCl is formed? C. how much excess reactant remains after the reaction stops? Answer the following questions about BaC2O4 and its hydrate: A. calculate the mass percent of carbon in the hydrated form of the solid that has the fromula BaC2O4 * 3H2O B.Heated t0 220 degrees celcius ,BaC2O4 * 3H2O dehydrates completely as represented below: BaC2O4 * 3H2O > BaC2O4 +3H2O(g) If 3.21 g off BaC2O4 * 3H2O is heated to 220 degrees celcius, calcuclate the mass of BaC2O4 PLease somone help Im desperate i need to know how to do this!!!!!!!!!!!!!!!!!!!!!      |
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