What is the final temperature when 76.8 g of water at 73.1°C is mixed with 21.5 g of water at 29.5°C? (The specific heat of water is 4.184 J/g·°C.)

Now consider the reaction when 45.0 g NaOH have been added. What amount of NaOH is this, and what amount of FeCl₃ can be consumed by it?

___________mol NaOH available

__________mol FeCl₃ that can react

Prelab question for Determination of the Universal Gas Constant, R:

How does collecting the oxygen over water affect the volume of gas collected? Why does this happen?

Please be specific and answer this question directly. I've already asked once and received a general answer not specifically regarding how this affects the Volume and Why it happens.

Write balanced molecular, ionic, and net ionic equations with states of matter.

1.) sodium carbonate + ammonium iodide

2.) iron (iii) chloride + ammonium iodide

3.) iron (iii) chloride + copper (ii) sulfate

4.) ammonium iodide + sodium hydroxide

5.) ammonium iodide + copper (ii) sulfate

IN MICHAELIS MENTEN GRAPH, HOW WOULD YOU INCREASE VELOCITY BEYOND Vmax?

Titrate 40.0 mL of 0.0350 M benzoic acid (C6H5COOH, Ka = 6.3 × 10–5) with 0.0700 M NaOH Calculate the pH in the solution after addition of 25.0 mL of 0.0700 M NaOH.
a) 2.269
b) 8.284
c) 9.845
d) 11.731
e) 5.628

Concentration of NaOH solution= 0.02803 M

Concentration of Crystal Violet dye solution=0.001 M

Room Temperature =25 degree celcius

Absorbance from the device- spectrovis(spectrophotometer)

The data in the trials are the absorbance.

-Its not Organic chemistry. Its an experiment about the crystal violet dye. Mainly they want to know how we get the rate law using these numbers.  It's asking for the rate law through these 2 trails and its asking to use some numbers to show how its solved . I also provided the procedure of the experiment.

1. Make sure the SpectroVis is plugged in to the LabQuest and the Labquest is plugged into a power outlet. 2. Turn on the Vernier by pressing the power button on the top 3. If it ask to Auto Recover, press no. 4. Tap Mode at the top right 5. Change the mode from Full Spectrum to Time Based. 6. Change the Interval to 30 seconds per sample 7. Make the Duration 450 seconds. 8. Tap OK 9. Tap Red USB: Abs 10. Tap Change Wavelength to 540 nm 11. Press Play in the bottom left, and allow Warm up for 90 seconds 12. Place Blank cuvette (NaOH) in SpectroVis. Ensure clear side is facing the arrow 13. Tap Finish Calibration 14. Add Crystal violet dye and immediately replace cuvette in SpectroVis and press ok. 15. Allow running for 450 seconds. 16. Press the file cabinet to ready a second trial 17. Repeat steps 11 and 12. 18. Get a fresh aliquot of NaOH of the second concentration. 19. Do two more trials with a second concentration of NaOH.

Time

Time: Trial 1 Trial 2

0 0.335 0.435

90 0.279 0.363

120 0.188 0.248

150 0.158 0.206

180 0.095 0.135

210 0.075 0.106

240 0.055 0.083

270 0.037 0.063

300 0.023 0.046

330 0.013 0.030

360 0.000 0.018

390 -0.007 0.006

420 -0.014 -0.002

450 -0.020 -0.009

The following calculations must be handwritten in your notebook. – Conversion of %Transmittance to Absorbance ■ Only one handwritten sample is necessary ■ However, all of your %Transmittance values must be converted to Absorbance in your Data Table

–The steps you took to determine the order with respect to the Crystal Violet Dye (X in the example)

– The steps you took to determine the order with respect to the NaOH (Y in the example)

– The steps you took to determine k – The overall, Modified Rate Law ■ With your values for X, Y, and k inserted into the equation

– Solve the Rate Law ■ Insert in all values necessary Result

Answer in steps please and in detail in order for me to understand it. I will appreciate your help thank you.

Discuss the use of Lanthanide shift reagents (LSR) in NMR spectroscopy, both how it works and why it is important.

What is the expected alkyl bromide product from reaction: 3-methyl-1-butanol with HBr

Consider the octahedral crystal fields below:

Cr³⁺ High-spin Cr²⁺ Cu²⁺ Low spin Co³⁺

a) determine which metal ions would be expected to undergo Jahn-Teller distortion (maybe more than 1 answer)

b) determine which metal ions from part a will be diamagnetic (maybe more than 1 answer)

c) [Cr(NH₃)₆]³⁺ is orange and [Cr(NH₃)₅Cl]³⁺ is violet. Using a color wheel with nm values, explain what this observation tells you about the octahedral splitting of these complexes

A student performs a spectrophotometric analysis using standard addition calibration and obtains a linear relationship with a slope of 1.00 a.u./ppm and a y-intercept of 0.960 a.u. What is the x-intercept of the regression?

How many grams of ATP are needed to prepare 0.34 L of a 85.0 mM solution? The anhydrous molecular weight of ATP is 478.2 g/mole, the ATP powder being used has 3.0 moles of water and 2.0 moles of Na⁺ per mole.

chemistry textbook reports that the activity coefficient for hydronium ion H₃O⁺ is 0.933 at 0.005 ionic strength. What would be the activity coefficient of a hydronium ion at an ionic strength of 0.015?

A 5mL blood sample is treated with trichloroacetic acid for protein precipitation. After centrifugation, the remaining solution is taken to pH 3 and extracted with two portions of 5.00 mL methyl isobutyl ketone, containing APCD. The extract is aspirated directly into a air/acetylene flame and an absorbance of 0.502 at 283.3 nm is obtained. 5.00 mL aliquots of primary standard containing 0.400 y 0.600 ppm of lead are treated the same way, and absorbances of 0.396 y 0.599, respectively, are obtained. Determine the concentration of lead in the sample (in ppm) assuming it follows Beer's law.

For a 0.0301 M aqueous solution of aniline, C₆H₅NH₂ (K_b = 7.4E-10), determine the following. K_w = 1.0E-14.

What are the major and minor species present? Include phase.

What is the major species (other than water)?

What is the minor species (other than H3O+ and OH-)?

What is the concentration of the minor species in the solution? (M)

What is the concentration of the major species in the solution? (M)

What is the concentration of H₃O⁺ in the solution? (M)

What is the concentration of OH^- in the solution? (M)

Find the pH.

Methane (CH4) gas flows into a combustion chamber at a rate of 200 L/min at 1.50 atm and ambient temperature. Air is added to the chamber at 1.00 atm and the same temperature, and the gases are ignited.

a. To ensure complete combustion of CH4 to CO2(g) and H2O(g), three times as much oxygen as is necessary is reacted. Assuming air is 21 mole percent O2 and 79 mole percent N2, calculate the flow rate of air necessary to deliver the required amount of oxygen.

b. Under the conditions in part a, combustion of methane was not complete as a mixture of CO2(g) and CO(g) was produced. It was determined that 95.0% of the carbon in the exhaust gas was present in CO2. The remained was present as carbon in CO. Calculate the composition of the exhaust gas in terms of mole fraction of CO, CO2, O2, N2 and H2O. Assume CH4 is completely reacted and N2 is unreacted.

21. Assume that spherical particles with diameter=100 μm and density=1.1 g/cm3 have sedimentation velocity of 1 cm/min in a solution with density=1 g/cm3. What is the sedimentation velocity of spherical particles with diameter=50 μm and density=1.3 g/cm3 in the same conditions?