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Calculate the ppm CaCO3 hardness of a water sample
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The calcium hardness of a water sample is found by complexation of Ca2+ with excess EDTA and backtitrating the excess with MgCl2. A known amount of EDTA (0.0100 M, 25.00 mL) is added to a 20 mL aliquot of the water sample. (Y is used to symbolise the EDTA molecule) Ca2+(aq) + Y4(aq) <>...
In the chemical reaction CaCO3=CaO+CO2, if 40.0g of CaCO3 is decomposed, how many gra
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okay, here is the question: in the chemical reaction CaCO3=CaO+CO2, if 40.0g of CaCO3 is decomposed, how many grams of CaO are produced? Also, where did "the rest" of the mass go anyway? I'm kind of confused on this question any leads would help. Thanks. View more questions Search
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