Many television crime shows depict forensic investigators using spectroscopy to detect the residue of bodily fluids at crime scenes. How does spectroscopy detect this residue?

Q: lase. g/mol

A: Molarity of solution is defined as number of moles of solute dissolved per liter of solution.

Q: 1. When comparing two compounds, the compound with smaller pka value means that it is

A: pKa = -log Ka  log Ka = -pKa  Ka = 10-pKa

Q: In charts the pKa of acids are often given instead of the Ka values. For the 5 acids below predict…

A: There are two types of bases/acids. One is strong base/acid which is completely dissociable in into…

Q: 400 450 500 550 600 650 700 wavelength (nm) : Wavclength of maximum absorbance for base form ph…

A:

Q: Explain how the DEPT spectrum can aid structure determination

A: DEPT is known as Distortionless Enhancement by Polarization Transfer is a modern NMR technique used…

Q: How many total electrons are in Ne22+?

A: The atomic number of Neon = 10

Q: Eyplain the tremendous difference in pKa values for the following two apparently similar compounds.…

A:

Q: Use the imaginary replacement technique to show that protons Hcand Hdin cyclobutanolare…

A: The proton Hc, and Hd in cyclobutanol are shown as diasterotopic in the below structure,

Q: B AICI, _ 1. (CH,CO),0 2. LIAIDĄ Isotopic sequences 1. HNO3, H₂SO 1. CH₂¹3³COCI 2. Fe, HCI 3. NaOH…

A:

Q: Explain the difference in the pKa values of the piperidinium and aziridinium ions

A: Given,

Q: Which of the following explains why a more concentrated dye solution has a higher absorbance? A.…

A: The law relating the concentration of dye with absorbance is Beer's law. According to which the…

Q: A. Radiometric datin B. If daughter atoms C If parent atoms h

A: We know that radioactive dating is possible when daughter and parent minerals are not disturbed as…

Q: H D DH meso only 1| D, Pa Caco, Phco,, quinoline ROH 21 Na. NH, lkal, OH 1| NANH, NH, THE 21 D,.…

A: 1 . Lindlar catalyst - heterogeneous catalyst comprising of Pd deposited on Calcium carbonate or…

Q: 16. Determine if the protons are on or off at a pH = 6.0 and then draw the predominant form. pKa =…

A: Every amino acid has a carbonyl group and an amino group, and each group can exist in an acidic form…

Q: Molar concentration of the dye stock solution: 2.52e-5 mol/L Solutions(Dilutions) Absorbance…

A: The concentration of the initial stock solution is 2.52×10-5 mol/L. The final volume of solution is…

Q: What is the structure and its peaks?

A: 2-Methoxynapthalene will show majorly peaks for methoxy group and and the aromatic part. So, first…

Q: Which ion will be attracted to a magnetic field? A) C²⁺ B) O²⁻ C) F⁺ D) Be E) All of the above

A: Paramagnetic substance are those substances which are attracted by the magnetic field and…

Q: HCl(g) deltaG=-95.3O2(g) deltaG=0 H2O(g) deltaG=-228.6Cl2(g) deltaG=0

A: Finding equilibrium constant.

Q: What is the application of NMR in medical field? a. Imaging of organic molecules in soft tissues b.…

A: Nuclear Magnetic Resonance (NMR) spectroscopy is the technique used for the study of the physical,…

Q: Chemistry H NMR AND C13NMR ??? IN 3 CI 5 A 20= B CI 7 9

A:

Q: Consider the dissociation of calcium phosphate show below: Ca3(PO4)2 (s)   ⇋⇋   3 Ca+2 (aq)   +   2…

A: According to law of chemical equilibrium,the product of molar concentration of products each raised…

Q: A. Distinguish the amine component from the coupling component in the given azo dye. B. Sketch the…

A:

Q: Which ion will be attracted to a magnetic field? A) C2* B) 02- C) F* D) Be E) All of the above

A: The ion which has unpaired electron in the orbital then it is called as paramagnetic substance.  The…

Q: Calculate the pH of a 0.12 M solution of hydrocyanic acid (HCN), which has a pKa of 9.31.

A:

Q: What is the Ka of an acid that has a pKa value equal to 3.93?

A: The pKa value as the negative logarithm of the Ka value: pKa = -log Ka. If we already know the pKa…

Q: A solution of RNA with a concentration of 40 ugmL-1 has an absorbance at A260 of 1.0. What is the…

A: Given: When absorbance is 1, concentration is 40 ug/ml. 1. When absorbance is 0.65, concentration…

Q: CH0 71 114 2965- 2875 1715 6H, triplet 4H, triplet 4H, sextet 10 ppm m/z Structure of Charged…

A: “Since you have asked multiple question, we will solve the first question for you as per our…

Q: What type of organic compounds can be detected using GC-MS?

A:

Q: TCDD is 44.77% carbon, 1.25% hydrogen, 9.94% oxygen, and 44.04% chlorine and has a molecular mass of…

A: Given that, TCDD molecule contains; Percentage amount of Carbon  = 44.77% Percentage amount of…

Q: Name the bio instrument that performs the following function and or functions a. Carbon dioxide…

A: Bio instrument mostly uses sensors to detect and measure recording and transmitting physiological…

Q: TM Br a b -11 CI SM

A: Retrosynthesis is a technique in which a probable route for the synthesis of an organic molecule.…

Q: If the concentration of a food coloring solution is increased by a factor of 3, how will the…

A: According to Beer Lambert law, the absorbance of any solution is directly proportional to the…

Q: Why does methyl orange have a lower pKa value (pKa~3.5) than methyl red (pKa ~5.1)?

A: We are to discuss why pKa value of methyl orange is lower than that of methyl red.

Q: A certain protein was found to contain 0.122%0.122% cobalt by mass. Determine the minimum molecular…

A: Mass percent can be expressed by the equation,

Q: A solution with 5 mg/mL of a colored protein has an absorbance of 0.250. What is the concentration…

A:

Q: When an external magnetic field is applied, what happens to the protons in a sample? a. All protons…

A: When an external magnetic field is applied, what happens to the protons in a sample, some protons…

Q: How would you confirm the presence of the [BF4]- ion?

A: presence of [BF4]-  is confirmed by:

Q: Predict and draw the major fragment structures and associated mass of each fragment for the…

A: Major fragments For fragmentation of bonds, they break in a homolytic manner and give free radicals.…

Q: How many protons electrons and neurons does 56fe2+ have?

A: The atomic number of an atom is equal to the number of electrons and protons of an element.

Q: 26. Are the two one-proton multiplets below coupled to each other? What criteria are you using? 8.10…

A: Interpretation: To find out whether the given two one-proton multiplets are coupled to each other.

Q: The magnitude or lonization ehergy depends upon A. number of positive charges B. shielding effect…

A: Ionisation energy is energy required to remove the electron from atom outer shell

Q: Choose the structure below that must have given rise to the FTIR scan pictured below. Note that this…

A: IR Spectroscopy is used to identify the functional groups present in an organic compound.

Q: H H-C-COOH pKa 2.34 NH3 pka = 9.60 A) 7.50 В) 3.63 C) 5.97 D) 7.26 E) 11.94

A: NOTE: There is a typo error in the question. It will be Pi of glycine and not pain. Pi means the…

Q: Why does Cytochrome C have a peak absorbance of 409nm? When proteins usually have a peak absorbance…

A: The cytochrome C is a small heme-protein which is found loosely with the inner membrane of the…

Q: 1. DMAP (cat.) THF, rt R. ОМОМ HO 2. Ai203, 60 °C R = (CH2)3OBN

A: The mechanism of the reactions are given below

Q: What is NMR

A: In this question we have to give brief description of NMR. NMR is nuclear magnetic resonance…

Q: Describe why some nuclei are NMR active and some of them are not active for NMR spectroscopy

A: There are two types of NMR nuclei with nuclear spin quantum number: I not equal to zeroI=0

Q: 34 CallBr Ial Lollullvi 35 NO NO Bir Br J 18 an basd n the enerus

A: Electrophilic addition is characteristic reaction of Alkenes  while aromatic compounds mainly shows…

Analyzing and Predicting Spectroscopic Data

The interaction of electromagnetic radiation with the structure of molecules in the sample and their study is referred spectroscopy. Several spectroscopic methods are used to acquire sample information, and these methods are proved to be accurate, fast, and non-destructive. The information obtained about the content and composition of molecules from these spectroscopic methods is called spectroscopic data.