31. How many percentage of the radical cation peak of (M +1) will be observed approximately when the- pure compound C6o was detected in the mass spectrometer? [一個純的Co在質譜儀中M+1吸收峰與分子離子的吸收訊號強度比例應為?] B (A)60% (B) 66% (C) 70% (D) 77%

Q: What best decribes the product(s) obtained when the following epoxide is treated with aqueous sodium…

A: -> Epoxide ring can open in two waysIn acidic medium nucleophile can open ring from most hindered…

Q: 1. Which of the following properties pertains to solids only? a. The kinetic energy is enough to…

A: The solutions are given below -

Q: Which of (a)-(d) indicates the correct order of chemical shifts of the four carbons in the 13C-NMR…

A:

Q: 6. Uranium hexafluoride is a solid at room temperature, but it boils at 56°C. Determine the density…

A: Density = 12.85 g/L

Q: 1. Which of the following is the longest bond? 2. Which of the following bonds has the lowest BDE?…

A: In this compund there are bond between two carbon. Bonds are may be single bond or double bond or…

Q: 6. Calculate the percent dissociation of 0.10 M hydrazoic acid (HN3, Ka= 1.9 x 10-5). Recalculate…

A: Answer: Hydrazoic acid is a weak acid and we have to study the common ion effect on its dissociation…

Q: 7. At 25°C, an aqueous solution of AlBr3 will have: (a) pH >7 (b) pH = 7 %3D (c) pH < 7

A:

Q: 1, 2 and 4

A: 1. Total molecular mass of Sb2S3 = 339.7 g  Mass of Sb = 121.76 g Amount of ore = 1kg = 1000 g 2. C…

Q: 1 and 2

A: A polar molecule is a molecule where the polar bonds are asymmetrically arranged (the dipoles do not…

Q: ections: Each set of lettered choices below refers to the numbered statement immediately following…

A:

Q: Write the reaction that takes place when OHa) is added to a basic buffer solution containing…

A: Given: Buffer solution of HONH2 and HONH3+. And OH- is added in the solution.

Q: 6. If there is a direct relationship then k =P/N. If there is an inverse relationship, then k= P x…

A: Boyle's law: At constant temperature, the pressure of given mass of a gas is inversely proportional…

Q: Choose the correct missing reagent/condition for the following reaction. To preview the image click…

A: Choose the missing reagent for the following reaction: Alkyne -&gt; trans - alkeneIn the given…

Q: 6. Identify the reagents in the following reaction scheme: OH Br -CH3 CH3 CH3 CH3 CH3

A: Question no.6 is explained below.

Q: D Question 3 Predict the pH range of a 0.500 M solution of LICIO4 need more information O neutral O…

A: pH range of a salt solution can be figure out from the composition of salt.

Q: Calculate the number of spheres that would be found within a simple cubic, a body-centered cubic,…

A:

Q: 6. Which of the following best describes Boyle's Law? a. The volume of a gas is directly…

A:

Q: 6. What is the frequency of a light source that has a wavelength of 620 nm? What is the energy this…

A: Wavelength of the wave = λ= 620 nm = 620×10–9 m We need to calculate frequency and energy of this…

Q: 1,7,and 8

A: SN1 Reaction: It is a nucleophilic substitution reaction in which the rate determining step depends…

Q: Design syntheses to produce the following compounds starting with any alcohol with 3 or less carbons…

A:

Q: 1. Which of the following statements does not describe the general properties of liquids accurately?…

A: 1.Which one of the following statements does not describe the general properties of liquids…

Q: Based on the number of mature trees and acres of grass in your lawn, determine how many grams of CO₂…

A: #Q.1: Number of matured trees available = 11 Pounds of CO2 a matured tree consume in a year = 148…

Q: 2) For a separate job, you are asked to assemble a number of tricycles by attaching wheels to the…

A: No. Of complete frames=70 No.of rear wheels=123 No. Of front wheels=74 For 1 complete tricycle, no.…

Q: 1₁ -2.02 -loy (2.012) = 2 + x y 2012 2012 201 CH LPH-0.304 6. Sodium azide, NaN3, is sometimes added…

A:

Q: 1,

A:

Q: Air pressure on the top of Mauna Loa, a 13,000-ft mountain in Hawaii, is 460 mm Hg. What are the…

A: Given information is as follows: The total air pressure = 460 mm Hg The composition of O2 = 21%…

Q: FC=0 H- +. H. 0=0 H. H-O Course of Reaction (time) 1) How energetic (H) is the transition state for…

A: Given combustion reaction is :  CH4 + 2O2 ------------&gt; Transition state ----------&gt; CO2 +…

Q: (Answers in proper number of significant figures are given to numerical questions to aid you 1. What…

A: The physical properties of substances are the characteristics of that substances which does not…

Q: 2. Acetic acid and methyl formate are structural isomers. Both are liquids at room temperature. One…

A: A question based on intermolecular H-bond, which is to be accomplished.

Q: How many moles of O2 will be formed from 1.65 moles of KCIO3?

A: According to the given reaction 2 moles of KClO3 on decomposition…

Q: 2. Comment on the differences in conductivity for tap water, distilled water, ethanol, and glacial…

A: Ions present in a particular species conducts electricity. With increase in the number of ions,…

Q: QUESTION 6 What is the hydronium (H3O*) concentration of a solution with a pH of 5.16?

A:

Q: 1. If you had to make a 0.750M solution of Na₂CO3 from 100mL of solution, determine the mass of…

A: Q-1 : A solution of 100 ml of 0.75 M of Na2CO3. We have to calculate the mass of sodium carbonate in…

Q: 6. Tell what type of orbitals (such as 1s, 3d, and so on) is described by each of the following sets…

A: n =1, l=0 n =1 indicate principal quantum number is 1 l = 0 indicate s orbital  so orbital notation…

Q: Question 2 Calculate the pH of a buffer solution that is 0.500 M HA and 0.650 M A. K = 8.85 x 104.…

A: A buffer is a solution which resist any change in pH on adding a small amount of acid or base . it…

Spectroanalytical Methods

Spectroanalytical methods measure the wavelength and intensity of radiations that are either emitted or absorbed by a molecular or atomic species. These methods are useful for evaluating the electronic or atomic arrangement of the molecules of a given analyte.