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Exactly 1.5 g of a fuel is burned under conditions of constant pressure and then again under conditions of constant volume.In measurement A the reaction produces 25.9 kJ of heat and in measurement B it produces 23.3 kJ of heat. Which measurement ( A or B) corresponds to conditions of constant pressure? Which one corresponds to conditions of constant volume? Explain.
A 20.0 mL sample of 0.200 M HBr solution is titrated with 0.200 M NaOH solution. Calculate the pH of the solution after the following volumes of base have been added.
sulfur trioxide can be removed from the exhaust gases of powerplants by reaction with lime according to the
A 14.31 g sample of hydrated magnesium sulfate (MgSO3• x H2O) is heated to remove the water of crystallization and 6.99 g of anhydrous magnesium sulfate (MgSO4) remains.
Calculate the pH of 0.0021 M aminoethanol (pKa = 9.38) in 0.0030 M sodium aminoethanoate (a salt of the conjugate base of aminoethanol).
The Ksp of lead(II) carbonate, PbCO3, is 7.40 × 10-14. Calculate the molar solubility of this compound.
Calculate the mass in grams of hydrogen chloride produced when 5.05L of molecular hydrogen measured at STP reacts with an excess of molecular chlorine gas.
determine the empirical formula of a dead alkaline battery if ofund to contain a compound of Mn and O. Its analysis gives 69.6% Mn and 34.4% O
n2go2glt-gt2nog kc 1.7x10-3calculate the equilibrium concentrations if the initial concentrations are 2.31 m n2 and
Which of the subsequent isn't determined by the principal quantum number, n of the electron in a hydrogen atom. The energy of the electron
Calculate the pH of this solution. recall that ascorbic acid is a diprotic acid. the first and second acid dissociation constants are 7.9X10^-5 and 1.6X10^-12.
The enthalpy of combustion of methane, Ch4, is -890 KJ/mol. If the gas flow rate of the methane to the burner of a stove is 5 L/min at 25 degrees celsius and assuming complete heat transfer from combustion
Can someone please give me an example of the balanced redox equation for Cu2+ from one of the Qual I cations? An explanation would be great.
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