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A solution (S1) of yellow # 5 has an absorbance far outside the linear region of Beer's law. In order to determine the concentration of this solution, a serial dilution is performed. To make so elution S2, 20 mL of S1 is diluted to 50 mL. To make solutionS3, 25 Ml od S2 is diluted to 100 mL. The absorbance of S3 is measured to be 0.714 at 430 nm using a 1 cm curvette. Use the true value of e and calculate the concentration of solution S1.
A compound is found to be 26.95% sulfur, 13.43% oxygen, and 59.61% chlorine by mass. What is the simplest formula of the compound?
calculate the volume that a 0.323 -mol sample of a gas will occupy at 265k and a pressure of 0.900atm
Considering the given equation Fe2O3 (s) + 3 CO (g) ? 2 Fe (s) + 3 CO2 (g) this is The overall reaction for the production of iron from iron ore (Iron (III) oxide) determine How many kilograms of iron are required to form 10,000 kilograms of Fe?
10.00 mL of a solution containing 0.17 M NaCl and 0.23 M AlCl3 is introduced into a fully charged cation exchange column. How many moles of hydronium ions will be released by the column?
Calculate the pressure of 4 g of nitrogen gas in a 1 L container at 20.0 ?C.
The most probable mechanism of reactivity for the solvolysis of tertiary butyl chloride is a)Sn1 b)Sn2 c)E1 d)E2. I performed the experiment and benzyl chloride (primary) and teriaty butyl chloride (tertiary) ran the same amount of time. 2-chloro-..
Pure gold can be made into extremely thin sheets called gold leaf. Suppose that 5.0 x 102 kg of gold is made into gold leaf having an area of 3620 m2.
one mole of silicon si has a mass of 28.086 g, and one mole of carbon has a mass of 12.011 g. what is the mass of one mole of silicon carbide ?
Compute A current is drawn from the cell until 1.20 grams of Ag have been deposited at the Ag electrode. Determine the value of E for the cell at that stage of operation.
Use the observations and arrange the following five reduction half-cell reactions in order, the one with the largest positive reduction potential listed first.
The radius of a gold atom is 144 pm. How many gold atoms would have to be laid side by side to span a distance of 2.63 mm?
Calculate the molar concentration of OH- ions in a 0.550 M solution of hypobromite ion (BrO-; Kb=4.0 x 10^-6). What is the pH of this solution?
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