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- Potassium dichromate and potassium permanganate have overlapping absorptionspectra in 1M H2SO4 . K2Cr2O7 has an absorption maxima at 440 nm, and KMnO 4 has a band at 545nm (the maximum is actually at 525 nm, but the longer wavelength is generally used whereinterference from K2C2O7 is less). A mixture is analyzed by measuring the absorbance at these twowavelengths with the following results: A 440 =0.405, A 545 =0.712 in a 1-cm cell. The absorbances ofpure solutions of K2Cr2O7 (1x10 -3 M) and KMnO 4 (2.00x10 -4 M) in 1 M H 2 SO 4 , using the same cell gavethe following results: A Cr,440 = 0.374, A Cr,545 = 0.009, A Mn,440 =0.019, A Mn,545 = 0.475. Calculate theconcentrations of dichromate and permanganate in the sample solution.|E Doublet Doublet Triplet Integration = 1 Integration = 6 Integration =1 Нeptet Doublet Integration = 1 Integration = 1 вс 8. PPMUse the data in Figure 4.8 to estimate the ratio of radiation intensity at 10,000 Å (infrared) to that at 5000 Å (visible) from a blackbody at 5000 K. How will this ratio change with increasing temperature? Explain how this change occurs.
- proposedmultiplication or division Is thispossible? result =⋅3.0g20.082kg? yes no =⋅7.0cm4.0cm? yes no =45.cm9.0s? yes noa laccd sign i X C tab McGraw-Hil X A ALEKS-Shu X https://www-awu.aleks.com/alekscgi/x/Isl.exe/1o_u-lgNslkr7j8P3jH-IvUrTNdLZh5A8CnG03PBGuXr8iCPa7ZMmym9HtY-pEBmXkvCfq... O CHEMICAL REACTIONS Calculating ion molarity using solute mass shift ↑ Calculate the molarity of Cl anions in the chemist's solution. Be sure your answer is rounded to the correct number of significant digits. caps lock esc Explanation ALEKS A chemist prepares a solution of vanadium(III) chloride (VC13) by measuring out 1.50 g of VCl₂ into a 300. mL volumetric flask and filling to the mark with distilled water. ILION K →1 E mol L ? Type here to search A Graw X HI Check 12 (8) 2 Z W S # 3 X alt $ D 4 C x10 f5 % X 100 LO 5 V f6 4- (0) 6 ALEKS G 14.1 f7 4+ & Y B hp 7 X H McGraw-Hi x A ALEKS-Shix Sign In 시기 fg IAA * © 2022 McGraw Hill LLC. All Rights Reserved. Terms of Use Privacy Center Accessibilit # a @ 76°F ㅅ 11:03 7/25/2 00 8 N 19 DII 9 fo K M DDI 2/5 0 P 12 insert [ = X + alt prt sc 46 Shusha 0 1 A backs paus cteAnswer choices for each blank (there is only one correct answer for each blank): ○ A ○ B ○ C ○ D ○ E ○ F ○ G ○ H ○ J
- Spectra Toluene: v 3077, 3030, 2932, 2865, 1610, 1494, 1560, 1377, 1877, 1081, 1931, 725,695 cm 8 (CDC13) 7.20 (s. 5H), 2.35 (s, 3H) ppm. bc (CDCl3) 138.4 (C), 129.0 (2 x CH), 128.6 (2 x CH), 125.7 (CH), 21.3 (CH)) ppm.AE = - 2 IS XIOM क np = 2, 7=6sa ->5116*3, En[(2.26 x 106) = 44.343] + 130.14 VG ΑΣΦΑΦ Submit hel CO micr HTC ΚΑΛΗΣΠΕΡ Εγκατ ACTI Birtugus Answer ?
- A ALEKS - Andrea Rose - Learn Here Is The Ground-state Electro X + -> A https://www-awn.aleks.com/alekscgi/x/Isl.exe/1o_u-IgNslkr7j8P3jH-IBjMWFuDsfi3JP6W5AVwuszJJ4aM2dS1d1Gb3hQ7nFmqC-1is_cBiKNhc7HFlvh_kW5pvbwwKDkKy.. * O THE TRANSITION METALS Andrea V Determining the oxidation state of the metal in a coordination... Determine the oxidation state of the transition metal in each of these coordination compounds. compound oxidation state of the transition metal K, FeCl, (NH olo Na CrBr, [vcL(co), ]B: ? Explanation Check © 2021 McGraw-Hill Education. All Rights Reserved. Terms of Use Privacy Accessibility ...This compound has a molecular formula of CgH100. Given its molecular weight and this spectral data, what is it? -1 IR: Short, messy peak between 3000 to 3100 cm, stronger, rough peak below 3000 cm1, strong peak at approx 1690 cm NMR: 7.9 ppm, multiplet, ratio of 2; 7.3 ppm, multiplet, ratio of 1; 7.1 ppm, multiplet, ratio of 2; 3.0 ppm, quartet, ratio of 2; 1.2 ppm, triplet, ratio of 3 3 8 (ppm) froquency-10 (number in bracket) The bond length of the CN molecule is 1.3 x 10 m. Given RAM:C = 12.0, N = 14.0, calculate (to 3 sig. fig.): (NOTE: exp = x 10 2 1. The moment of inertia, I 1.81 exp(-45) v kg m 2. The rotational constant B -1 m -1 3. The position (in m ') of the 2.62 exp(-18) tional spectrum of this molecule. 155 1.55 3.28 exp(-10)
