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Explain what is the lead (II) ion concentration in a solution prepared by mixing 381mL of 0.437 M lead (II) nitrate with 433mL of 0.362 M sodium fluoride? The Ksp of lead (II) fluoride is 3.6 × 10-
calculate the ph of soultion prepared by adding20.0ml of 0.100m hcl to 80.0ml of a buffer that is comprised pf 0.25 M NH2NH2
Define which reagent is used in excess alcohols or carboxylicacids and provide a reasonable explanation, acetic acid + ethanol -- > ethyl acetate
write the balanced reaction for the complete combustion f octane c8h18 and then determine how many moles of oxygen it
Complete and balance the following redox equation that occurs in acidic solution using the set of smallest whole-number coefficients. What is the sum of all the coefficients in the equation
The standard entropy of Pb(s) at 298.15k is 64.80 jk-1 mol-1. assume that the heat capacity of Pb(s) is given by Cp,m (Pb,l)/jk-1mol-1 = 32.51 -.00301 t/k. calculate the standard entropy of Pb (l) at 650 C. calculate delta H for the transformation..
compounds like rm ccl2f2 are known as chlorofluorocarbons or rm cfcs. these compounds were once widely used as
Enter the net ionic equation for the reaction of aqueous sodium chloride with aqueous silver nitrate Imagine that andA, B are cations and X,Y Z,, and are anions, and that the following reactions occur
the electron drops down to the 3d subshell, releasing a photon in the process. how many radial nodes and how many angular nodes does each of the orbitals in part (a) have?
If 0.0598 moles of potassium hydroxide are added to 250 ml of this buffer, what is the pH of the resulting solution? (Assume that the volume change does not change upon adding potassium hydroxide)
Calculate the molar mass of the unknown gas. (remember that the faster the rate of effusion, the shorter the time required for effusion of 1.0L
Plan and Design Lab: To Determine the water of crystallization in hydrated copper (2) sulphate. Hence determine the formula CuSO4.xH2O.
2.1417 x 103 mg of a homoatomic diatomic ideal gas occupies a volume of 1.37 x 103 cc at a temperature of 25 deg C and a pressure of 16.14 in. Hg Explain What is the identity of the gas
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