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You have 0.554g sample that is a mixture of oxalic acid, H2C2O4 and another solid that does not react with sodium hydroxide. If 29.58 mL of 0.550 M NaOH is required to titrate the oxalic acid in the 0.554g sample to the equivalence point, what is the weight percent of oxalic acid in the mixture? Oxalic acid and NaOH react according to the equation H2C2O4 (aq) + 2 NaOH(aq)--->NaC2O4(aq) + 2 H2O (l)
What is the mass in grams of 1.56 moles of menthol?
This solution was back-titrated with a 0.0440 M Ga3 solution until all the EDTA reacted, requiring 14.0 mL of the Ga3 solution. What was the original concentration of the V3 solution?
Calculate how wide is the cloud of organisms at the time peak concentration takes place at the intake pipe.
water from 20 degrees Celsius to 100 degrees Celsius. What is the delta H of combustion of the propane. What is the sign (positive or negative) of delta H?
How much heat (kJ) is absorbed/ released? b. What is the change in internal energy (kJ) if the reaction results in a volume change of - 2.78 L?
In a solution of acetone and ethanol, the mole fraction of acetone is 0.40. What is the concentration of acetone as a mass percent?
the vapor pressure of water at 90.0 is 526.8mm hg what mass of ethlene glycol (mw 62.7gmol) when added to 1.50 kg of warer will lower the vapor ptessure
Find ratio of the atomic mass of Silicon to Hydrogen if every 100g of SiH4 contains 87.45g of Si and 12.55g of H.
CO(g)+2H2(g)->CH3OH(g) How many moles of each reactant are needed to produce 3.60 X 10^2g of CH3OH?
After 79.0 min, 35.0% of a compound has decomposed. What is the half-life of this reaction assuming first-order kinetics
The vapor pressure of chlorine dioxide (ClO2 ) is 155 Torr at -22.75 ? C and 485 Torr at 0 ? C. What is the normal boiling point of chlorine dioxide?
A 2.154 g sample of HgO produces 125 mL of oxygen gas. The gas is collected over water at 24 C and an atmospheric pressure of 763 torr.
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