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The pH of a calcium containing solution is adjusted by the additionof a few drops 0f 2M KOH and titrated with 0.01000M EDTA. If a10.00 ml aliquot of the Ca2+ containing solution requires 15.40 ml of the EDTA to reach the equivalence point. What is the concentration of Ca2+ with in the unknown sample?
Camphor (C10H16O) is a natural compound found in the wood of camphor laurel, an evergreen native to southeast Asia. Borneol (C10H18O) and isoborneol (C10H18O) are similar to camphor
Describe four different potential pathways that can utilize pyruvate as a substrate. Show all of the pathways (draw them out) and what the final fate of pyruvate is in the respective pathway
Calculate the energy that must be transferred as heat to a van der Waals gas that expands reversibly and isothermally from Vi to Vf.
adding a few drops of a strong acid to water will lower the pH appreciably. however, adding the same number of drops to a buffer does not appreciably alter the pH. why
A Solution of 1.69g of this compound in 9.23g of benzene freezes at 2.18 degree celsius. What are the molecular formula and molar mass of the compound? ( the normal freezing point of pure benzene is 5.50 degree celsius)
Metal X was plated from a solution containing cations of X. The passage of 48.25 C deposited 31 mg of X on the cathode. What is the mass of X (in grams) per mole of electrons.
what is the intermediate of the photochemical isomerization of (E,E)-2,4-hexadiene to (Z,E)-2,4-hexadiene ? Draw the structure of this nternediate
How many moles of N2 are produced by the decomposition of 1.40 of NaN3 ?
The pH of a 0.55 M aqueous solution of hypobromous acid, HBrO, at 25.0 °C is 4.48. What is the value of Ka for HBrO.
how many grams of cacl2 should be dissolved in 500 ml of water to make a .20 m solution of calcium
percent iron in a sample that is 70.0% iron (II) ammonium sulfate hexahydrate, Fe(NH4)2(SO4)2 x6H2O.
Is the pH of 100 mL of an aqueous solution containing substantial and approximately equal con- centrations of sodium hydrogensulfite and sodium sulfite closest to a pH of 2, 3, 4, 5, 6, 7, 8, 9, 10, none of these, or cannot be determined
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