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A 10.00 mL sample of the resulting solution is transferred into an Erlenmeyer flask for a titration. Upon titration you determine that there are 0.0340 grams of NaHCO3 present in the sample. What is the percent purity of NaHCO3 in your baking soda? (The formula weight of NaHCO3 is 84.007 g/mole).
Calculate the amount of heat needed to boil benzene (C6H6), beginning from a temperature of 6.7 degrees celcius.
Rank the following aqueous solutions in order of increasing boiling point: 0.10 mNa2SO4, 0.10 m SrSO4, 0.25 m sucrose, 0.20 m glucose, 0.15 m NaCl
The oxide is first reduced to Fe^2+, the Fe^2+ requires 4.00mL of 0.0200 M KMnO4. The reaction in acid is: 5Fe^3+ + MnO4^- + 8H^+ ---------> 5Fe^3+ + Mn^2+ + 4H20. Calculate the mass of Fe, and the mass of Fe2O3.
The solution to Equilibrium constant, A certain gas mixture held at 395C has the following initial partial pressures: P(Cl2) = 351.4 torr; P(CO) = 342.0 torr and P(COCl2) = 0.
A gas mixture is made by combining 7.9 g each of Ar and Ne and an unknown diatomic gas. At STP the mixture occupies a volume of 18.73 L.
determine the structures of Compounds A, B, C, D, and E. Show calculations. Support all of your structure determinations.
This strontium isotope is radioactive, with a half-life of 28.1 yr. Calculate how long it will take for 0.860 g of the isotope to be reduced to 0.170 g by decay
Consider the mechanism of reduction of WO3. At least two mechamisms are possible to the formation of HxWO3 during intercalation of WO3
A 25.0-mL sample of 0.150 M butanoic acid is titrated with a 0.150 M NaOH solution. What is the pH before any base is added? The Ka of butanoic acid is 1.5 x 10-5.
if 400 ml of a 0.100M acetic acid and 200 ml of 0.100m solution acetate are mixed, what is the pH?
description of the mechanism of this reaction? tertiary carbanion, 2-methylpentoxonium ion, sp hybridized pentyne, vicinal dihydroxide, or hydroxide ion.
Nitric oxide has a density = 1.782 g/L at the temperature of 12.64 degree celsius and pressure of 670.7 mm Hg determine the mass percent of Sulfur dioxide?
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