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A sample containing 42 ml of 0.0625 M NaBr was made by adding 37.8 ml of water to an initial solution of concentrated NaBr. Explain what the concentration of NaBr was in the initial solution
The titration of a 23 ml sample of 0.110 M HC2H3O2 with 0.130 M NaOH. Determine the following? the initial pH, the volume of added base required to reach the equivalence point
What is the pH of the solution when the hydronium ion + concentration of 0.15 M CH3COOH is 6.3 × 10.
an isotope of the element thallium tl-206 undergoes beta decay with a half life of 3.1 minutes. assume you begin with
Thomas Jefferson Snodgrass found an unlabelled reagent bottle in his -80 C freezer. The Bottle contained a liquid. He found that the compound( compound 1) quickly evaporated when warmed to room temperature. H-NMR of the compound showed only two pe..
many drugs decompose in blood by a first-order process. in 8.0 hr secobarbital sodium a common sedative reaches a blood
A 10.00 mL sample of vinegar is titrated with 0.5062 M NaOH and 16.58 mL is needed to reach the equivalence point. What is the molarity of the vinegar
The reducing agent in this catalytic hydrogenation reaction was molecular hydrogen (H2), which was produced in situ during the course of the reaction.
Give the structure that corresponds to the following molecular formula and 1H NMR spectrum: C7H12Cl2: ? 1.07 (integral = 6203, s); ? 2.28 (integral = 1402, d, J = 6 Hz); ? 5.77 (integral = 700, t, J = 6 Hz).
Define the Beer-Lambert Relationship in detail.How does this relationship allow one to quantify an unknown?
A (n) 8.54 - mol sample of carbon monoxide was stored in a 30.0-l container at 49.9 c . What is the pressure of the carbon monixide in the container.
What is the pressure in a 65.0L cylinder filled with 0.235 moles of nitrogen gas at a temperature of 105K.
Determine the reaction, Fe2O3 + 6 HCl => 2 FeCl3 + 3 H2O. Explain how many moles of H2O will be made from 42.9 grams of HCl
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