htProblemID=D143793425&offset%3Dnext CHE154-H Gen Chem I Bronikowski S20 ints Part A a solution that is 0.195 M in HC2 H3O2 and 0.100 M in KC2H3 O2 Express your answer to two decimal places. • View Available Hint(s) AZ¢ pH = %3D
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- The absorbance of an iron() thiocyanate, Fe(SCN) 3 (MM=230.09 g/mol) , solution containing 0.00955mg / m * L is reported as 0.376 at 540 nm. Calculate the specific absortivity of iron() thyocyanate with units c * m ^ - 1 * (mg / m * L) ^ - 1 A 0.58 cm sample cuvette is used. Report your answer to 3 significant figures.a solution of 5.47 ppm kmno4 has a transmittance of 0.409 in a 1 cm at 520nm. Calcualate the molar absorptivity of KMnO4 Express in 5 SFPlease please please show all the work Alive the neutralization prom lens below using the equation Ma Va=Mb Vb.
- Pls help me with the following and make sure its 100% its important asap, thank you smHow do I find Concentration? flask Calculate solution Concentration (M) Volume stock of 0.40 M CuSO4 (ml) Volume of flask (ml) Absorbance at 635 nm(a.u.) 1 2.0 10 .185 2 4.0 10 .362 3 6.0 10 .510 4 8.0 10 .674 5 10.0 10 .843Mass of aspirin used is .090 g the absorbance for the final solution was .304 nm Slope is 1708 and y-intercept is -0.03397 what is the molarity of the final unknown solution and the molarity of the original solution made from aspirin in the 250.0 ml flask
- Using a 10mL pipette, you prepare a standard solution by pipetting 10.00mL of the standard iron solution [0.25g/L] into a 100mL volumetric flask. Then, using a 25mL pipette you transfer a 25mL aliquot of this solution into a 250mL volumetric flask and dilute up to the mark. Calculate the % uncertaintyUsing a 25mL pipette, you prepare a standard solution by pipetting 25.00mL of the standard iron solution[0.25g/L] into a 500mL volumetric flask. Then, using a 10mL pipette you transfer a 4mL aliquot of this solution into a 50mL volumetric flask and dilute up to the mark. Calculate the % uncertainty.Describe the following as used in analytical chemistry a) semiqualitative analysis b)Assay c) derivatisation