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- What is the oxidation state of an individual sulfur atom in MgSO4? Express the oxidation state numerically (e.g., +1).250 mg of a sample of minium (Pb3O4) is solubilized and weighed as PbSO4 by going through the necessary procedures. If the weight of PbSO4 weight is 90.9 mg, calculate the percentage of Pb3O4 in the sample.Vanadium could be oxidized to vanadium (II) ions thru the action of zinc powder and an acid True or false?
- Alkalinity is normally measured in terms of CaC03. What is the formula weight of this compound? In what way might this formula weight make CaC03 a convenient reference material for alkalinity?What is the oxidation number of Pb in Pb(NO3)2? -1 0 +1 2 -2Assign oxidation numbers to each of the following species: • NH4Br • NaCl • H2O • CaCO3 • Fe2O3 • Pb(NO3)2
- What are the oxidation numbers of nitrogen in the reactants and products of this reaction? a)NH4+ b)NO2-3. What is the mass percentage of NaOH in a solution that is made by dissolving 8.0g NaOH in 50g H2O? * A. 5% B. 8% C. 16% D. 13.79%In which species does nitrogen have the highest oxidation number? N2 NH3 HNO2 NO2- NaNO3
- What are the oxidation numbers in the following compound? BaSO41. In the Le Chatelier's Principle, the aqueous solution of CoCl4 with an oxidation state of -2 is _________. blue pink yellow 2. _______depends on ferroin, an iron atom with fan-shaped molecules attached to make a kind of open sphere. Briggs-Rauscher Reaction Belousov-Zhabotinsky Reaction Elephant's Toothpaste ReactionA 0.25 M solution of magnesium nitrate is diluted to one half its original concentration. What is the total concentration of ions (magnesium ions AND nitrate ions) in the dilute solution? a) 0.125 M b) 0.25 M c) 0.375 M d) 0.50 M e) 0.75 M