Help please

A 55-kg woman has 7.5 x10 ^-3mol of hemoglobin ( molar mass= 64,456g/mol) in her blood. How many hemoglobin molecules is this? What is this quantity in grams? 

Please show how work step by step 

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Laboratory Assignment for Module 4: Equilibrium Constants

Name:

College ID:

Thomas Edison State College

General Chemistry II with Labs (CHE-122)

Section no.:

Semester and year:

 

 LABORATORY REPORT

Laboratory Assignment for Module 4: Equilibrium Constants
(eScience Lab 5 [17])

 

 

 I.       PURPOSE (10 POINTS)

 

 

 

 

 

 II.    TEST DATA (15 POINTS)

Table 1. Equilibrium Constants Data

Syringe Reading, mL

pH after each 0.5 mL increment

Color Observations

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

III.   CALCULATIONS (15 POINTS)

 

Volume of NaOH when solution turns dark pink/orange:

 

Volume of NaOH at the equivalence point (the point on the graph midway between the vertical rise; see Lab 7 [19], Figure 2):

 

pH at the equivalence point (should be approximately 8–9):

 

Volume of NaOH at equivalence point:

 

Volume at half-equivalence point:

           

pH at the half-equivalence point:

pH = pKa  at this point

 

Ka (equilibrium constant):

pKa = –log Ka                                    

 

 

Show calculations

 

 

 

 

 

 

IV.  RESULTS (20 POINTS)

 

Experimental Ka of acetic acid:

 

 

Theoretical Ka of acetic acid:

 

 

 IV.  CONCLUSION (10 POINTS)

 

 

 

 

 V.     QUESTIONS (30 POINTS)

 

1.      Compare your experimental value for the equilibrium constant to the theoretical value. Do you notice any variation? If so, why? (10 points)

 

2.      Write the dissociation of acetic acid, HC2H3O2.(10 points)

 

 

 

3.      Write the equilibrium expression for acetic acid. (10 points)

 

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Chemistry essay

Can someone write an essay that would need to be 3 pages double spaced. It would be about pesticides and their chemical influence, needs to be done by Wednesday and will pay person. Thank you. 

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Chemistry 2.15 Unit Assessment

Chemistry

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Question

What is the energy of light associated with a transition from n=3 to n=8 in a hydrogen atom? Does this represent absorption or emission of a photon?

 

4.54 × 10-19 J, emission

2.08 × 10-19 J, emission

4.54 × 10-19 J, absorption

6.81 × 10-20 J, absorption

2.08 × 10-19 J, absorption               

 

 

Give the numbers for ml for a p orbital.

 

1,2

0,1

-2,-1,0,1,2

-1,0,1

 
Particles exhibit diffraction while waves do not.Particles interfere constructively and destructively whereas waves do not.A wave travels straight through a slit.Interference patterns are observed when a wave passes through a barrier with two slits.

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Ca(H2PO4)2 Express your answer using one decimal place and include the appropriate units.

C a ( H 2 P O 4 ) 2

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determine the pH of the solution resulting when 100cm^3 of 0.50mol dm^-3 hydrochloric acid is mixed with 200cm^3 of 0.1mol…

determine the pH of the solution resulting when 100cm^3 of 0.50mol dm^-3 hydrochloric acid is mixed with 200cm^3 of 0.1mol dm^-3 NaOH

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CHEM HOMEWORK

1) ANSWER ALL QUESTIONS HIGHLIGHTED IN YELLOW INSIDE PDF FILE TO SEPERATE WORD.

 

2) INSIDE WORD DOCUMENTS ANSWER QUESTIONS 22 TO 40.

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Quantitative Spectroscope and Visible Light lab

  

1. Indicate the colored lines you observe in fluorescent light, street lights, car headlight, and an additional light source of your choice by creating an illustration similar to that of figure 15 in your lab. (10 points)

  

Data Table 1

 

Fluorescent   Light Image

Car   Headlight Image

Street   Light Image

Additional   Light Source

 

2. Calculate the frequency, wavelength, and energy for each wavelength you observed in the fluorescent and street light. (10 points)

Click or tap here to enter text.

3. Try narrowing and widening the light inlet slit. How does this affect the spectra? Compare the thickness, resolution, and shape of the lines. (10 points)

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4. Imagine you are writing a lab report. In your own words, provide an introduction for a lab report. Include the purpose of the lab and use the background section of the experiment to help you. Feel free to find outside resources for additional information. (10 points)

Click or tap here to enter text.

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Place the following substances in order of decreasing volatility. Rank the substances from most volatile to least volatile. To rank…

Place the following substances in order of decreasing volatility. Rank the substances from most volatile to least volatile. To rank them as equivalent, overlap them.

The substances are: CBr4, CH4, CH2Br2, CH3Cl,CH2Cl2, and CHBr3

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