What is the pH of a 0.250 M sulfurous acid solution? H₂SO3 + H₂O H3O+ + HSO3 K₁₁ A. 1.21 B. 0.054 C. 1.07 D. 1.27 = 1.5 x 10-² Kaz K₂₂ = 1.0 x 10-7 4

Please explain the process including the ppm of each peak, thanks!

Fill out the IR spectra of the compound

Which of the five dyes tested in this experiment has the strongest ability to absorb light? How do you know?

After creating her standard curve for absorption versus the concentration (M) of FD&C Red 40, a student found that her best fit linear line for FD&C Red 40 was y = 2,962x + 0.005. Her Kool-Aid sample had an absorbance of 0.685. If 0.543 grams of Kool-Aid powder was used to prepare an 8-fl oz cup of her assigned flavor, what is the percent by mass of FD&C Red 40 in her 8-fl oz cup?

2) In a laboratory study, a calibration was performed using NH4C1 to analyze ammonium spectrophotometrically. The results of the study are given below. According to this, when the 5.0 mL sample containing ammonium is completed to 50 mL with pure water, find the amount of NH4 in the sample whose absorbance was found as 0.12 according to the table. (N: 14 g / mol, H: 1 g / mol, Cl: 35.5 g / mol). Concentration (mg/L) Absorbance 0.01 5 0.05 7.5 0.1 10 0.15 12 0.18

SPECTRA FOR HOMEWORK 11, CHE 230 002 This page is not to be submitted to Gradescope. Use these spectra as you answer questions on the Homework 11 document. Spectra for Problem 1 100 %T 80 60 40 20 Relative Intensity 4000 100- 80 8 60- 40- 20- 0 20 2H 2H 3000 m/z 50.0 75.0 76.0 155.0 157.0 183.0 185.0 212.0 214.0 100.0 97.5 11.8 11.7 1686 cm 40 60 80 2000 rel, intensity 11.9 16.9 17.6 28.8 27.8 Wavenumber[cm-1] 100 120 m/z 1500 7.90 7.85 7.80 7.75 7.70 7.65 7.60 7.55 1588 cm² 20 20 ₂ مسلسل..............للمسلسل ppm 140 160 180 200 220 2H 1000 3.12 3.00 2.95 2.90 3H 500 400 A. Propose a molecular formula for this compound B. Propuse. a structure selected 1.25 1.20 1.15 201

With a resolution of 500 a peak will an m/z value of 297.000 from which of the following peaks?   297.439 297.603 297.356 298.000 297.232

I wanna know how to make V = abc(1 − cos2α − cos2β − cos2γ + 2 cos α cos β cos γ)1/2 (the volume of triclinic). When a≠b≠c, α≠β≠γ ≠90°

what is the reading of this buret?