Werecertainionstypicallyalwayssolubleoralwaysinsoluble?Howcouldyoutell?Includespecificexamples.

Describe in your own words how any two types of the following types of chromatography work: adsorption, partition, ion exchange, molecular exclusion, or affinity.

What volume, in liters, of O2 measured at 760 torr and 25o C is needed to completely react with 18.47 g of iron to give Fe2O3?

Describe the major properties, methods of analysis, and clinical use of:

AFP

CA-125

CEA

Beta-hCG

PSA

a. what is the difference between a flourescence excitation spectrum and a fluorescence emission spectrum?. which resembles an absorption spectrum.

b. consider a molecule that can fluoresce from the s1 state and phosphoresce from the t1state. which is emitted at longer wavelength?make a sketch showing absorption fluorescence and phosphorescence on a single spectrum.

Azulene is a beautiful blue hydrocarbon consisting of only C and H atoms. If 0.106 g of the compound is burned in oxygen, 0.364 g of CO₂ and 0.0596 g of H₂O are made. Determine the empirical formula of azulene from this data. [ Hint: First convert the masses of CO₂ and H₂O to moles, then convert the moles found to moles of C to H. ]

Provide a brief introduction/background of the molecule Oseltamivir (Tamiflu) and include a brief description of what the molecule is and how the molecule is used. Discuss how does the structure plays a role in its function and why is the shape of the molecule important to its function?

Part 1:

Trial	Initial pH	Final pH	Final volume after titration	Initial Buret Reading	Total Volume Titrated
#1	3.34 pH	4.35 pH	47.50 mL	50 mL	2.50 mL
#2	3.39 pH	4.20 pH	47.90 mL	50 mL	2.10 mL
#3	3.39 pH	4.40 pH	47.00 mL	50 mL	3.00 mL

Part 2:

Trial	Initial pH	Final pH	Final volume after titration	Initial Buret Reading	Total Volume Titrated
#1	5.01 pH	5.03 pH	48.00 mL	50 mL	2.00 mL
#2	5.01 pH	5.04 pH	47.00 mL	50 mL	3.00 mL
#3	5.01 pH	5.04 pH	47.50 mL	50 mL	2.50 mL

Part 3:

Trial	Initial pH	Final pH	Final volume after titration	Initial Buret Reading	Total Volume Titrated
#1	5.01 pH	4.99 pH	47.00 mL	50 mL	3.00 mL
#2	5.01 pH	4.98 pH	46.80 mL	50 mL	3.20 mL
#3	5.01 pH	5.00 pH	47.50 mL	50 mL	2.50 mL

1.According to your observations, in Part 2 and Part 3, did your buret values agree with one another? If not, how would you explain the difference?

2. What conclusions can you draw when you compare Part 1 to Part 2? What about when comparing Part 1 to Part 3? Explain your reasoning.

3. Given the following, determine which set(s) correctly represents a buffer system. Explain your reasoning.

1. NaNO₃

HF and KF

HCl and NaOH

HC₂H₃O₂ and NaC₂H₃O₂

4. What is the pH of a solution prepared by dissolving 1.00 g of Ca(OH)₂ in water to make 875 mL of the solution? Show your calculations.

5. Given the following pair, determine which one is more basic. Explain your reasoning.

Photo developer with a pH of 12.0 or a solution of borax with a pH of 9.2

Chlorine gas reacts with ammonia to form nitrogen gas and ammonium chloride. If 70 g of chlorine and 50 g of ammonia form 6.2 grams of nitrogen, what is the percent yield of this reaction? What is oxidized? What is reduced?

define a buffer and give two examples of buffer solutions?

Aqueous hydrochloric acid (HCl) reacts with solid sodium hydroxide (NaOH) to produce aqueous sodium chloride (NaCl) and liquid water (H2O). If 12.9 g of sodium chloride is produced from the reaction of 19.7 g of hydrochloric acid and 40.8 g of sodium hydroxide, calculate the percent yield of sodium chloride. Round your answer to 3 significant figures.

what is the difference between chemistry and chemical engineering ??
is it both are same ??
howmuch syllabus is same as for both ??
what exactly chemist do and what exactly chemical engineer do ??

A galvanic cell consists of a iron electrode in 1 M Fe(NO3)2 and a copper electrode in 1 M Cu(NO3)2. What is the equilibrium constant for this reaction at 25oC? Enter you answer with 2 significant digits, using the syntax of "1.0x10(22)" for "1.0x1022

What is the cell potential (emf, in V) of this cell at 25^oC?

Cu |Cu²⁺ (0.0510 M) ‖ Br₂ |Br^- (0.363 M)

What mass (in g) of aluminum can be electroplated when 0.855 amps are used for 1.029 hours using a solution of aluminum nitrate?

What mass (in g) of silver can be electroplated when 0.781 amps are used for 1.281 hours using a solution of silver nitrate?

Calculate the wavelengths of the following objects:

a muon (a subatomic particle with a mass of 1.884 × 10–25 g) traveling at 320.0 m/s

an electron (me = 9.10939 × 10–28 g) moving at 4.20 × 106 m/s in an electron microscope

a 77.0 kg athlete running a "4-minute mile" (i.e. 4.00 min/mile)

Earth (mass = 5.80 × 1027 g) moving through space at 2.90 × 104 m/s