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The electrochemical processes that occur in the rate limiting step of the corrosion of iron (oxidation of iron) are represented by the half-reactions
Fe2+(aq) + 2e-? Fe(s) Eº = -0.44 VO2(g) + 4H+(aq) + 4e-= ? 2H2O(l) Eº = 1.23 V
First, write the overall reaction. What is the standard potential for the overall chemical reaction?
Identify the number of electron groups around a molecule with a tetrahedral shape. a)4 b)3 c)5 d)2 e)1
solution of the monoprotic acid HBr is titrated, and 85.00 mL of 0.59M NaOH is required to reach the equivalence point. What is the original concentration of the acid solution?
Tell what type of chemical reaction is represented by the following chemical equation.
If a buffer is prepared using equal amounts of acetic acid and sodium acetate predict what the pH of the solution will be.
Calculate the change in enthalpy for the Mg-HCl reaction using standard enthalpies of formation. Delta Hf for HCl(aq)=-167.2kJ
How much limestone must be decomposed by heating to produce 150.0 grams of lime, CaO?assuming that the limestone contains 85.0% pure CaCO3.
If 5.08 x 10^ 3 kg each of NH3, O2, and CH4 are reacted, what mass of HCN and of H2O will be produced, assuming 100% yield?2 NH3(g) 3 O2(g) 2 CH4(g) → 2 HCN(g) 6 H2O(g)
a patient weighs 146 pounds and is to receive a drug at a dosage of 45.0 mg per kg of body weight. the drug is supplied
a 265- flask contains pure helium at a pressure of 761 . a second flask with a volume of 490 contains pure argon at a
rubidium has two naturally occurring isotopes with mass 84.9118 and a natural abundance of 72.17 and with mass 86.9092
Which salt would make an acidic solution when dissolved in water a. rubidium diiodide b. aluminum tribromide c. potassion fluoride d. calcium sulfate Which would produce a basic solution in water
at 25 degrees C calcium fluoride has a solubility product constant Ksp= 3.0*10/\(-11). If enough CaF2 is added to saturate the following solutions, determine the equilibrium concentrations
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