Spring22 Simple Harmonic Motion Lab Online

Using the thermodynamic information in the ALEKS Data tab, calculate the standard reaction free energy of the following chemical reaction: 4Fe (s)+30, (g)→ 2Fe,0, (s) Round your answer to zero decimal places. kJ x10 Continue O2021 McGraw Hill LLC. All Rights Reserved. Terms

7:27 Done Photo Dimensional Analysis Worksheet NAME: madsoo mcucker 1. 261 J» kJ 11. 22.4 kg/L to dag/mL 2. 3.0 x 1022 molecules → mol 12. 0.74 miles/min to dm/sec 3. 9,474 mm cm 13. 1.42 g/cm? to mg/mm? 4. 0.73 mol → L 14. 10095 ft/s to miles/s 5. 5.93 cm m2 15. 9.81 mg/L to lbs/cm 6. 498.82 L - molecules 16. 8.41 kJ/mol to cal/L 7. 1.00 ft hm 17. 3.8 Mg → Ibs 8. 1.0 year - minutes 18. 7.68 g/mol → ng/molecules 9. 175 lbs cg 19. 8.24 atm/cm to torr/ft 10. 4.65 km - in 20. 25 m/s to miles hr

In the technique of high performance liquid chromatography (HPLC) the peak area response for a particular analyte is directly proportional to concentration Analgesic tablets typically consist of aspirin and caffeine as the active ingredients, the remainder made up of inert binding material. The concentrations of aspirin and caffeine may be routinely monitored using HPLC, whereby the peak areas obtained from a solution of the tablet are compared with those obtained from standard solutions of the analytes. In an analysis to determine the concentration of caffeine in such a tablet, the following data were recorded: Solutions Analysed: Tablet Sample: Mass of tablet (dissolved in 250 cm methano): 0.523 g Caffeine Standard: Mass of caffeine (diessolved in 500 cm methanol) 0.105 g HPLC results: Solution Peak Area (catfeine) 1. Tablet Sample 325 2. Caffeine Std. 865 The concentration of caffeine in the tablet (expressed as a mass (w/wl percentage) was Oa 1.89 Ob 13.4 O 3.77 Od. 267 Oe 7.54 You…

on the last part of the problem where it is x=( 10-10 x 0.25)1/2=5x10-6 M When I plug that into my calculator I get 1.25 an not 5x10-6 what am I doing wrong

Question: Using a method for the determination of % CaO in limestone the following results were obtained for a NIST Certified Reference Sample (CRM): % Cao 50.38, 50.20, 50.31, 50.22 50.41 Five samples were obtained from a railcar of limestone. The analysis of the samples gave the following results: % CaO 55.01, 59.61, 58.82, 64.39, 62.49 a) Determine the variance due to sampling. b) If the samples taken from the railcar had a mass of 0.500 g, what mass

B NA BH2 bh3 S = 6 6H Calculator: NA indicates neutral axis Section Modulus I Beam Universal Calculator For the next four questions (including this one) ignore k and k1 in your calculations. Using the same table, enter the value for B in inches. (three sig figs)

Icalate Hi BeHot)+6el2( +2Bels() +oHel(②) using Hess Law Bel310+3H2O→H2B/23(g) +3=-122.5K) B2H6(+6H2O(P)→2HB+6H2(火) →トニ-4734人) Male B₂ HO H2(+244145) Siven +3HP Im Belz

Perform the calculations and determine the absolute and percent relative uncertainty. Express each answer with the correct number of significant figures. To avoid rounding errors, do not round your answers until the very end of your calculations.

The density of water varies with temperature.       T / oC            Density / g mL–1       19.00             0.998405       20.00             0.998203 What is the density of water at 19.75ºC found by linear interpolation?   Question 4 options:   0.998304 g mL–1   0.998254 g mL–1   0.998355 g mL–1

What is the slope of the calibration curve (first four options), the Y-intercept of the calibration curve (second four options), and the R² value of the calibration curve (final four options) to four significant figures on each?

Y Submit Part C [OH-] = 5.4 x 10-4 M Express your answer using two decimal places. pH = Request Answer Part D [VD| ΑΣΦ VO Submit Request Answer [OH-] = 0.004 M Express your answer using one decimal place. pH = ΠΕ ΑΣΦ ha ? Address

8:45 Convert 7.6 cm³ to m³ STARTING AMOUNT ADD FACTOR x( ) (1000) ³ 0.01 (0.1) ³ (0.01) ³ 0.076 (1) ³ 0.1 1 100 1000 Question 29 of 40 (100) ³ 7.6 x 10-4 7.6 7.6 x 10-6 X ANSWER m³ cm³ m cm Tap here or pull up for additional resources ..lLTE Submit RESET 5

Please correct answer and don't use hand raiting

i cant seem to get the right answer for this, could you please explain how i use the constant? like how do i enter it in the calculator

Please answer as soon as possibly and I will leave a like.

For the numbers 116.0, 97.9, 114.2, 106.8 and 108.3, use the Q-test, decide whether the number 97.9 should be discarded.

Please complete the rest of the chart below using the data given   formual that maybe useful: q = m c delta T

TRial 1 Trial 2 Trial 3   0.1 N HCl 0.1 N NaOH 0.1 N HCl 0.1 N NaOH 0.1 N HCl 0.1 N NaOH Final reading (ml) of the buret 20.00 19.90 40.00 39.70 20.00 45.30 Initial reading (ml) of the buret 0.00 0.00 20.00 19.90 0.00 25.50 Volume Used (ml) for the trial              Compute for 1.00 ml HCl in terms of ml. NaOH for  EACH Trial. Compute for 1.00 ml NaOH in terms of ml. HCl for  EACH Trial.

Fill in the remaining columns except kj/mole

Calculate the mean and 90% confidence interval for the data set. Sample Value 1 8.0626 8.0650 3 8.0583 4 8.0564 8.0571 6. 8.0600 mean: étv A A hulu 2. 5.