▪ True or False: in a TOF analyzer, a fragment of low mass reaches the detector first ▪ In GCMS when we know what analytes we are measuring we use mode. When we do mode. SIM allows greater sensitivity not know what analytes are in the sample we use than scan. ▪ A) Scan; SIM ▪ B)SIM; scan B C) SIM; SIM
Q: Q. In a chemical reaction 2.05 g of salicylic acid was reacted with 5.0 mL of acetic anhydride in…
A: Mass of salicylic acid = 2.05 g Volume of acetic anhydride = 5.0 mL Theoretical yield of aspirin =…
Q: Christian tried to sabotage Hazelle’s experiment by pouring 10 ml of 1M ammonia into Hazelle’s 10 ml…
A: Christian tried to sabotage Hazelle’s experiment by pouring 10 ml of 1M ammonia into Hazelle’s 10 ml…
Q: 1-at atmospheric pressure a sample of Ne gas gas a volume of 155mL at 32C degrees. What volume in…
A: Ideal gas Equation: PV=nRT P= pressure V= Volume R= ideal gas constant T= temperature n= number…
Q: Match the structures to its IUPAC name. 5 OH OH 잇엇 Br ☆ 2,4-dibromo-3,5-dimethylhexane…
A: The naming of an organic compound can be done with help of rules of international union of pure and…
Q: Dibenzalacetone can be classified as a: monomer dimermicelle polymer
A: Three isomers of dibenzalacetone are cis-cis, cis-trans, and trans-trans. It is used as a ligand in…
Q: What is the value based on which heparin dosing is adjusted: O a. Platelet count O b. O C. O d. PTT…
A: •As we know Heparin is an anticoagulant,which increases the risk of bleeding in patients,so to avoid…
Q: Propose suitable reagents and provide plausible mechanisms for the formation of compounds 2 and 4…
A:
Q: the binding constant and the free energy of binding
A: The binding constant for a receptor R and a ligand L is defined as Kbinding=[RL][R]×[L] for the…
Q: Vd increases, t1/2 ______ because____ A. Decrease; t1/2 proportional to 1/Vd B increase; t1/2…
A: Vd is Directly proportion to the half life that is t1/2 So according to this above statement we can…
Q: the lab experiment on Calorimetry?
A: Which of the following is FALSE regarding the lab experiment on Calorimetry – (A) The specific heat…
Q: Model 2: Aldoses are reducing sugars. H. +~C=O H-C-OH I HO-C-H Ī H-C-OH H-C-OH CH₂OH oxidizing agent
A: Reducing Sugar (biology definition): A sugar that serves as a reducing agent due to its free…
Q: A fuel with the following composition in mass fractions is given: wc= 0, 4, wo = 0, 1. WH = 0,05, WN…
A: Given the mass fraction composition of the fuel is; wC = 0.4 wO = 0.1 wH = 0.05 wN = 0.45
Q: Which liquid would have the highest vapor pressure at 25 degrees Celsius? a. CH3-OH b. CH3-O-CH3…
A: Since, Vapour pressure calculate in terms of intermolecular forces. More the intermolecular forces,…
Q: لله - od This B-diketone can be synthesized from cyclohexene and cyclopentanone using an enamine…
A:
Q: even some Selt, in which would each salt produce acidic (A), basic (B) netural (N) an or 97 Ca Cl₂…
A: Base react with acid to produce salt and water. Nature of the salt depends from which type of acid…
Q: Differentiate the following: 1. Absorbed water from occluded water in the sample. 2. Adsorbed…
A: In the given question we have adsorbed water, occluded water, absorbed water, Interstitial water,…
Q: Draw and name the major products that would be formed when isopropyl benzene is treated with 1)…
A:
Q: 0. P. CO₂H DCC سلالة SOCI₂ 1) NaOH 2) CH3COCI Ph NH₂ NaOH Na 1) SOCI2 2) CH3CH₂CH₂NH₂ OH (x.s) CH₂OH…
A:
Q: CI + 2 NH3 a. Draw the structure of the tetrahedral intermediate INITIALLY FORMED in the reaction…
A: The acid chloride is the most reactive acid derivative and it reacts with ammonia to form an amide.…
Q: MISSED THIS? Read Section 18.8. You can click on the Review link o access the section in your e…
A: Given reactions are : Part. A :- N2O4 (g) --------> 2NO2 (g) Part. B :- NH4I (s)…
Q: Using the stock solution concentrations of 0.20 M Fe3+ and 2.0*10^-3 M SCN-, calculate the following…
A: Stock solution concentrations of 0.20 M Fe3+ and 2.0*10-3 M SCN- 2ml of Fe3+ and 0.25 ml SCN-…
Q: Continuing still with the helium example, what is the total partition function for 1000 helium atoms…
A: For an ideal monoatomic gas, the partition function can be given as: Z=2πmkBTh23/2V where m is the…
Q: Synthesis #1 CO₂CH3 from mod H CH3 juvabione skeleton Br H and any other reagents and sources of…
A: Note - Since the given question is a multiple question, hence I solved first question according to…
Q: Express your answers to at least 5 significant figures. The mass of one mole of boron is 10.811 g.…
A:
Q: please give the E° of this equation! Cr(NO3)2 + AgNO3 → Cr(NO3)3 + Ag
A: In electrochemical cell oxidation take place at anode and reduction take place at cathode. Eocell =…
Q: QUESTION 3 a) Magnesium reacts with dilute sulfuric acid according to the following equation: Mg (s)…
A: According to collision theory, only those reactant molecules form products which do effective…
Q: Consider the following reactions and choose the correct structures from the pool of choices below.…
A:
Q: small.unt of sodium chloride (NaCl) is dissolved in a large amount of water. Imagine separating this…
A:
Q: the thermal explosion and branched chain explosion
A: According to the question, explosions occur when the rate of reaction increases dramatically over a…
Q: Imagine there is a bulla, a large blister or sack of gas, in the lungs of a person who is climbing…
A: Introduction : According to Boyle's law the absolute pressure exerted by given mass of ideal gas is…
Q: 2-Carboethoxycyclohexanone (A) can be prepared by condensation reactions as follows. Path 1: Via…
A: Since you have posted a question with multiple sub-parts ,we will solve first three sub-parts for…
Q: y Choose the atom or ion in each pair which best fulfills the given criterion: (i) Greater atomic…
A: As per the bartleby expert guidelines, I am allowed to answer first threw questions at a time.…
Q: On the lowest energy pathway to form the product of the following reaction, which species is a…
A: Given reaction: We have to find the plausible transition state for this reaction.
Q: For the reaction: A+B⟺C The concentration of A is 0.96M, the concentration of C is 0.85M, and the…
A:
Q: Compressible is a classification of matter, where its molecules are existing separately from each…
A: A solid cannot be compressed much because its particles are already very closely packed and there…
Q: Chlorine gas (Cl2) can be prepared on a small scale according to the following balanced equation:…
A: The balanced equation for the formation of Cl2(g) is: MnO2(s) + 4HCl(aq) → MnCl2(aq) + 2H2O(l) +…
Q: Which of the following IR frequencies would be expected for acetonitrile? Select all that apply.…
A:
Q: A catalyst is commonly defined as a material which changes (usually increases) the rate of…
A: A) Catalyst does not affect the position of equilibrium, adding a catalyst does not affect the…
Q: A chemistry graduate student is given 250. ml. of a 0.60M methylamine (CH, NH₂) solution.…
A:
Q: What would the hydroxide ion concentration be if the hydrogen ion concentration was 1 x 10-3 M?
A:
Q: me symbol of a simple unprefixed SI unit has been left off of each measurement in the table below.…
A: SI unit for length, height , width , breath is meter ( m ). SI unit for mass is kilogram ( Kg). SI…
Q: 11. REACTIONS A. product/s. HS -CI CH₂CH₂ HC. Draw the structure of the missing reactant/s, reaction…
A: The structure of the major products in the given reactions are show below as ;
Q: To a test tube containing 5.0 ml of 1.00 M NaOH at 27°C in a calorimeter, 5.0 ml of 2.00 M HNO3 at…
A: To a test tube containing 5.0 ml of 1.00 M NaOH at 27°C in a calorimeter, 5.0 ml of 2.00 M HNO3 at…
Q: At a certain temperature, Kc equals 4.0 × 102 for the reaction: CO(g) + O2(g) ⇌…
A: Chemical equilibrium is defined as the stage at which time both reactant and product are in…
Q: [4.05819 Mass of Urea (g): Buret Initial Volume (mL): water Part 2 Calculation: Final Temperature of…
A:
Q: Match the descriptions to the structures. OH OH ABA AHA ACA OH AIA H₂N less acidic substituted…
A:
Q: (b) At 80 °C, ethylene dibromide and propylene dibromide mixture forms an ideal solution. Given that…
A:
Q: 3: In the second part of the experiment, a solution containing 1.60x10-³ M Fe³+ and 4.00x10-4 M SCN…
A: Plot the calibration curve using the data in given table. Initial concentration of SCN- in the…
Q: Rank the following dienophiles (from least reactive to most reactive) in terms of reactivity in a…
A:
Q: HCI (excess)
A:
Step by step
Solved in 3 steps with 3 images
- M 23 (H) Inorganic Analytical Chemistry pard My courses CHEM 23 (H) FS-AY:20-21 Week 4-5: Quantitative Analysis by Gravimetry and Titration Quiz 4 Qu 10 The 500.0-mg sample of impure Na2 CO3 (FM: 105.96) required 22.00 mL of the HCI standard solution (the obtained concentration of HCI from the previous question, problem 5: Titrimetry short answer type) for complete neutralization. ut of 1. Give the balanced chemical equation between the sample, Na2CO3 and the standard, HCI. 2. What is the mass (g) of Na, CO3 in the sample? 3. Calculate the % (w/w) purity of a 500.0-mg sample of impure Na2 CO3 Note: Type your solution here or upload its pic in Jpeg or pdf format. Another option is to send it to me via email (subject: Fam name-Quiz 4) or messenger, privately. Do not forget to box the final answer and write your name. В I 1.I did an experiment: Molar concentration of Fe (NO3)3=.002 Molar concentration of NaSCN= .002 On my 1st trial: Volume of Fe(NO3)3 = 5 mL Moles of Fe3+, initial (mol) = 1 x 10-5 Volume of NaSCN (mL)= 1 mL Moles of SCN-,initial (mol)= 2 x 10-6 Absorbance was .08 Now trying to find Calculation of Kc I already found [FeNCS2+] equilibrium, from calibration curve (mol/L)= 2.25 x 10-5 Now I need to know: 1. moles FeNCS2+ at equilibrium (10mL) (mol) 2. moles Fe3+, reacted (mol) 3. moles Fe3+, equilibrium (mol) 4. [Fe3+] equilibrium, unreacted, 10 mL (mol/L) 5. moles SCN-, reacted (mol) 6. Moles SCN-, equilibrium (mol) 7. [SCN-] equilibrium (unreacted) 10 mL (mol/L) Feel free to just give me the formula to find these. Or to charge me 2 or 3 questions if I asked too much. Thank you!!!!!!MAX OF 15 MINUTES A solution contains NaOH (FM = 40), NaHCO3 (FM = 84), and NazCO; (FM = 106), either alone or in a permissible combination. Titration of a 50 mL portion to a phenolphthalein end point requires 16.3 mL of 0.100 M HCI. A second 50.0-mL aliquot requires 38.2 mL of the HCI when titrated to a bromocresol green end point. %3D %3D What is the % w/w composition of the following? Express answers in two decimal places. If the component is not present, write 0.00 in the answer box. NAOH: NazCO3: NaHCO3: 96
- 20 ml of 0.1 N Ammonia diluted to 60 ml with water. (kb = 1.8 x 10-5) pH = pKw –pKb +;logC What is the p'H of the analyte?3. Titration: Strong Acid / Weak Base. (I warned you to be ready!) Here's the cool chart! Analyte: 20.00 mL 0.100 M Hydrazine (N₂H4) Hd A: initial Vertical (Value) Axis Title 0 B: half equivalence C: equivalence 5 10 15 20 Titrant: mL of 0.100 M HCI added 25 20.00 mL of 0.100 M hydrazine (N₂H4, pKb = 5.77) is titrated with 0.100 M HCl. a) Find the initial pH (point A) and the pH at the equivalence point (point C). b) Find the pH at the half equivalence point (point B).Help me
- Ex1 Pchem. thank you. The answer should be 0.02, 1.13 M and 1.14 m respectively.6) Bu analyst in a solution uning two dierent indicators. lis results were an /lowes : meanired the con cen tration n aid Mean [HCI]+ Stand Dev. 002467テ 0.0045 Indi cator A: 18 12 Indicator B: 0-02407 チ0.0032 Is the difference between te tueo indican Ys figniticand at he 95%. confiden ce loue/?A solution of Ba(OH)2 was standardized against0.1215 g of primary-standard-grade benzoic acid, C6H5COOH (122.12 g/mol). An end point was observedafter addition of 43.25 mL of base. (a) Calculate the molar concentration of the base. (b) Calculate the standard deviation of the molarconcentration if the standard deviation for themass measurement was ±0.3 mg and that for thevolume measurement was ±0.02 mL. (c) Assuming an error of ±0.3 mg in the mass measurement,calculate the absolute and relative systematicerror in the molar concentration.
- A drug is ordered to be administered IV at the initial rate of 4 mU/min, and may increase by 2 mu/min q 15 min to a max of 10 mU/min. The IV strength is 5 mU/mL. Construct the first two lines of the titration table for this order. O A. Dose Rate (mU/min) IV rate (mL/h) 4 mU/min (initial) 8 mU/min 36 mL/h 48 mL/h O B. Dose Rate (mU/min) 4 mU/min (initial) 6 mU/min Oc. Dose Rate (mU/min) 4 mU/min (initial) 6 mU/min O D. Dose Rate (mu/min) 4 mU/min (initial) 6 mu/min IV rate (mL/h) 24 mL/h 48 mL/h IV rate (mL/h) 48 mL/h 72 mL/h IV rate (mL/h) 36 mL/h 36 mL/hPreparation and Standardization of KMnO4 solution Experimental data Complete the table below. Trial 1 0.2001 g Trial 2 0.2065 g Trial 3 Weight of sodium oxalate (Na2C2O4, MM= 134 g/mol) Titration data 0.2050 g Final reading Initial reading 29.86 mL 0.00 mL 30.66 mL 30.52 mL 0.00 mL 0.00 mL Total vol. of KMNO4 used Computed Molarity of KMNO4 solution Mean Molarity Computed Normality of KMNO4 Mean Normality of KMNO4 solution Reaction Involved: Calculations:In this double titration experiment determining composition of soda ash, you are given the following data: M HCl titrant: 0.0501 M +/- 0.0507 Mass of soda ash sample, g: 0.2505 ± 2.0e-4 (Analytical Balance) Total volume of Sample Stock, mL: 75 ± 0.05 (100mL graduated cylinder) Volume of Sample Stock Aliquot, mL: 25 ± 0.3 Find the missing information. Show solutions