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(#2) which compound is most consistent with the following mass spectrum? (choose the best from the figures below)
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- Relative Intensity 100 M+ = 132 80 60 40- 20- 0- 25 50 75 m/z 100 T 125auDUIUance UI U.I JU ai 4JJ IIII III 1. UU CIII cuvclic. Calculate the molar absorptivity of the pigment at 453 nm? Q5) A student is tasked to determine the number of moles of H2SO4 (aq) in a 200 ml of an unknown solution. The student prepares a series of solutions with known concentrations of H2SO4 (ag) and measures the absorbance of each at an appropriate wavelength. These data are used to construct the calibration plot shown below. 1.00 0.80- 0.60 - 0.40- 0.20- 0.00- 3 x 10-4 6 x 10-4 Concentration (mol/L) If the absorbance of the unknown solution is 0.70, how many moles of H2SO4 (aq) does the 200 ml sample contain? AbsorbanceDescribe the origin of shot noise in a spectrophotometer. How does the relativeuncertainty vary with concentration if shot noise is the major noise source?
- 18P3JH-IQs_dp5pR4EN YC-70kXyvIz36BqJhw3sVPjBM1Gk45mlzq1R2r1PxBPnLctsC-Txx7dUax4sp-1P6W9HQV7MFFXM-1wpl2?1oBw7QYjlbavbSPXtx- Login | Student Veri. H Logout MyProgramming ab Imported From IE ITEC2110:Summer2... TunesToTube - Upl... Web Development.. O CHEMICAL REACTIONS Clap Using molarity to find solute mass and solution volume A chemist adds 0.35 L of a 0.21M potassium dichromate (K, Cr, O,) solution to a reaction flask. Calculate the mass in grams of potassium dichromate the chemist has added to the flask. Be sure your answer has the correct number of significant digits. II1) Formula: C4H10O2 PPM Broad singlet (2H) Multiplet (2H) Integration 1.114 6H 3.764 2H 3.998 2H ma PPM Doublet (6H)Is the product pure? how do you know? here is the results: Starting mass of benzyl 1.0883g Collected mass of product 0.8957g Product melting point 135˚C Mixture melting point (product mixed with benzoin) 114˚C Mixture melting point (product mixed with meso-hydrobenzoin) 135˚C
- not use ai pleaseYou are trying to come up with a drug to inhibit the activity of an enzyme thought to have a role in liver disease. In the laboratory the enzyme was shown to have a Km of 1.0 x 10-6 M and Vmax of 0.1 micromoles/min.mg measured at room temperature. You developed an uncompetitive inhibitor. In the presence of 5.0 x 10-5 M inhibitor, the apparent Vmax was determined to be 0.02 micromoles/min.mg. What is the Ki of the inhibitor?Relative Intensity 20- 0- 100- 80 60- 3- 50 m/z 100 125 150 175 III CH YY YY IV