18-18. A compound with molecular mass 292.16 g/mol was dissolved in a 5-mL volumetric flask. A 1.00-mL aliquot was withdrawn, placed in a 10-mL volumetric flask, and diluted to the mark. The absorbance at 340 nm was 0.427 in a 1.000- cm cuvet. The molar absorptivity at 340 nm is E340= 6 130 M em1 (a) Calculate the concentration of compound in the cuvette. (b) What was the concentration of com
18-12. The absorbance of a 2.31 x 105 M solution of a compound is 0.822 at a wavelength of 266 nm in a 1.00-cm cell. Calculate the molar absorptivity at 266 nm.
85 %- 4:26 PM Sat Jun 8 < BB Q group project w.. Untitled Notebook group project Group Project 1 Problem Statement in) is filled with wate an initial height of 21 in. At time t 0 the plug is removed and the water is allowed to drain through the sharp-edged orifice (D=0.25 in) Determine the length of time it will take to drain the tank Plot the water depth and flow rate as a function of time. S
Help with 4-8. All data information is here. What information do you need? Part C: Specific Gravity 4. Complete the following table by calculating the concentration in % (w/v) of standard sugar solutions. The values of specific gravity are transferred from Data Sheet. Show all your calculations. Specific Gravity Concentration % (w/v) Standard Sugar Solution #1 #2 # 3 Calculations: 5. Plot dat
1. The Colorado River is famous for the solids load it carries. Based on historical averages, assume the flow is 22,500 cfs (cubic feet per second) and the suspended solids concentration is 4200 mg/L at the upstream end of Lake Powell (the reservoir behind Glen Canyon Dam). What is the solids loading rate to the lake? Express your answer in US (or "short") tons/day. 2. You have an e