(EVAN 101) #1 Witnessing Report copy

The representations 14N or 15N give more information than simply the chemical symbolN. Explain?

Ff.238.

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A sample is dissolved in water and analyzed using spectrophotometry. The sample shows an absorbance peak at a wavelength of 486 nm. Which one of the following adjustments would increase the absorption at that wavelength? O Diluting the sample with additional water. O Evaporating some of the water from the sample. Decreasing the path length, b. the light takes through the sample. Re-measuring the absorbance of the blank (water).

Can someone help me interpret this data to be put on my research paper? This is the absorbance spectrum fo Sulfamethoxazole (sulfonamide antibiotic). Thank you so much!

What is a possible testable question (in correct format) that Marisa might ask for this Sanrio?

MCPBA CH2N2, hv Br2, CC14

How did you decide on the wavelength at which you will read the absorbance of the diluted solutions? What is the importance of reading the absorbance of diluted solutions at λmax? What will vary if you chose a wavelength 20 nm lower or higher than your chosen wavelength? (Minimum of 8 sentences)

Be sure to answer all parts. Covalent bonds in a molecule abso rb radiation in the IR region and vibrate at characteristic frequencies. (a) A molecular vibration absorbs radiation of wavelength 176 µm. What frequency (in s) corresponds to that wavelength? Enter your answer in scientific notatio n. X 10 -1 (b) A molecular vibration has a frequency of vibration of 6.753 x 10 m) corresponds to that frequency? 13 Hz. What wavelength (in p IIO $4 %23 2 4 3. 7. e p

Answer the following if True or False. (11-20)   11. UHF radiowaves are ionizing form of radiation. *   True   False   12. Gray is the unit of the absorbed dose of radiation. *   True False   13. Spent fuel, uranium dioxide, from nuclear power plant can be disposed as ordinary solid waste. *   True   False   14. Sievert is a unit of the amount of energy that has been absorbed by the living tissue. *   True   False   15. The earth is constantly bombarded by background radiation like cosmic rays. *       True   False   16. Half-life of radioactive nuclides decreases by half every time they emit radiation. *   True False   17. Alpha particles are the most ionizing radiations. *       True   False   18. Irradiated…

Do question 2 pleas, don’t return the question please

You are a forensic scientist. You are investigating a murder involving poison. The victim was poisoned with a compound called di-chlorobenzene, whose formula is C6H4Cl2. Autopsy results show that the victim’s body contained about 27.5 g of the poison, but the actual amount could have been slightly higher due to tissue absorption. The main suspect is his wife, Suzanne, who works as a chemistry professor. Records show that she purchased 15 g of benzene (C6H6) two days before the murder. Benzene is one of the compounds used to make the poison. She claims she was using it to make methyl benzene (C6H5CH3), an innocuous compound, for use in her lab. She shows you the bottle of methyl benzene she claims to have made. It contains 25 g of methyl benzene. To produce di-chlorobenzene, the reaction is:       Cl2(g)  +  C6H6(l) ⟶⟶ C6H4Cl2(l) + H2(g) To produce methyl benzene, the reaction is:          CH4(g) + C6H6(l) ⟶⟶ C6H5CH3(l) + H2(g)   Use stoichiometry to solve this case. Be sure to show…

You are a forensic scientist. You are investigating a murder involving poison. The victim was poisoned with a compound called di-chlorobenzene, whose formula is C6H4Cl2. Autopsy results show that the victim’s body contained about 27.5 g of the poison, but the actual amount could have been slightly higher due to tissue absorption. The main suspect is his wife, Suzanne, who works as a chemistry professor. Records show that she purchased 15 g of benzene (C6H6) two days before the murder. Benzene is one of the compounds use to make the poison. She claims she was using it to make methyl benzene (C6H5CH3), an innocuous compound, for use in her lab. She shows you the bottle of methyl benzene she claims to have made. It contains 25 g of methyl benzene. To produce di-chlorobenzene, the reaction is:       Cl2(g)  +  C6H6(l) ⟶⟶ C6H4Cl2(l) + H2(g) To produce methyl benzene, the reaction is:          CH4(g) + C6H6(l) ⟶⟶ C6H5CH3(l) + H2(g)   Use stoichiometry to solve this case. Be sure to show all…

Answer the questions in the table below about this molecule:

Please answer the following question:

clete ال Me o + e A + Co₂ Et ||| CHO cHo - دو ۸۸۰۸+vi -

Name the following organic compounds

Write the chemical formula for this molecule: H H CH | H 1

Table II Cuvette # Concentration Absorbance 0.50 M 1 1.049 2 0.40 M 0.926 3 0.20 M 0.740 0.298 4 0.10 M 5 0.05 M 0.202 Unknown # 9 0.427 Unknown # 10 7 0.646 Blank (DI water) 0 1. If Beer's Law is valid, the value of "E" should be constant. Use A = E*C*L or E= A/(E*L) and the data from Table II to calculate values of E for the five solutions below The value of L is normally 1 cm so E = A/C in this experiment. Table III Solution # Calculated Values of E 1 2 3 4 5

5) 2 PbS04 → IN PbSO3 + 02 Type 6) _ Al + Fe2O3 → Fe + _Al2O3 5 Type 7) SF6 → S + F2 Typ 51 D 032 8) _ C2H4 + 02 → CO₂ + _ H₂O 9) _ KClO3 → KCl + _ 02 Typ 31392 Тур 10) - Pb(NO3)2 + NaCl → NaNO3 + PbCl2 Ty 10 +8=80 = Oxygen 11) What type of = Carbon 12) Using the key provided, write the complete chemical formula show

Identify the monomer(s) for the following polymer. Select all that apply.

Which one is it?

Please help answer this

Plz help me to solve this

Answer the questions in the table below about the shape of the carbon dioxide (CO₂) molecule. How many electron groups are around the central carbon atom? Note: one "electron group" means one lone pair, one single bond, one double bond, or one triple bond. What phrase best describes the arrangement of these electron groups around the central carbon atom? (You may need to use the scrollbar to see all the choices.) 0 (choose one) × S î

Which one is it?