1. Which of the following is the best option for transferring 20 mL of a solution? a.Use a 5mL serological pipette 4 times b. Use a 10 mL Mohr pipette twice c. Use a 20 mL Mohr pipette once d. Use a 10 mL volumetric pipette twice   2. Which glassware is NOT used in preparing a solution from a solid sample? a. Funnel b. Beaker c. Volumetric pipette

Q: What reagents are used to make the following molecule?

A:   Esterification :  Carboxylic acid reacts with alcohol in acidic medium gives ester , where acid a...

Q: II *公日。 Ce The correct arrangement of figure I is: light source → photomultiplier tube sample → mono...

A:

Q: For the following reaction, 0.288 moles of hydrochloric acid are mixed with 0.335 moles of barium hy...

A:

Q: What is the total molar concentration of ions in each of the following solutions? A 0.19 M solution...

A: We have to predict the total molar concentration of ions .  

Q: 1.) How many grams of a 75% v/v hydroalcoholic solution should be used in preparing 16 fl.oz. of a 1...

A: Since you have posted multiple questions, we are entitled to answer the first only. Given: Concentra...

Q: All of the following are classified as an instrumental method of analysis EXCEPT:   A. electroanal...

A:                                 Answer  The major categories of instrumental methods are the spectra...

Q: II в D Which part in the figure can be a photovoltaic cell, phototube or photomultiplier tube? O A B

A: Photomultiplier tube- These are the sensitive detectors of light used for multiplication of electron...

Q: 21. Which of the folowng ie the comect chemcal formue tor this moiecule? S-NH2 mage proviey Sna an a...

A: Sorry !!! Picture is not much clear but still I managed to give the solution. 

Q: What is  could be the calculated  lambda max of this compound?         285     280     275 ...

A: These rules provide a theoritical basis of determining the absorption wavelength (λmax) given by UV ...

Q: For the reaction 2NOCI→ 2NO + Cl, the rate constant k equals 0.020 L mol 1 s1 at a certain temperatu...

A: Given,  rate constant, k  = 0.020 L mol-1 s-1   L mol-1 s-1 is the unit of second order reaction.   ...

Q: O A 466-g sample of water is heated from 8.50 °C to 74.60 °C. Calculate the amount of heat absorbed ...

A: NOTE: Since you have asked multiple questions, we will solve the first question for you. If you want...

Q: A spot of black ink was placed on a strip of filter paper. The chromatogram was developed using an a...

A: The fastest moving spot has the highest Rf value. here we see C covered a long distance so it has h...

Q: For the following reaction, 29.0 grams of calcium hydroxide are allowed to react with 24.6 grams of ...

A:

Q: Which of the following statements are true for chemical interference? I. Releasing agents are added ...

A: Chemical Interference : It is occurs when the analyte is not totally decomposed in a flame. These ar...

Q: For the following reaction, 4.70 grams of benzene (C6H6) are allowed to react with 18.1 grams of oxy...

A:

Q: What is the most proper major product for this reaction scheme? 2. 2. 1. 2CH,MgBr, THF 2. H D O A

A: Acid chlorides react with two equivalent of Grignard reagents to produce tertiary alcohols. Because ...

Q: Write structural formulas for the following compounds: a. 2-chlorobutane 2,3-dimethylbutane 1,3-dich...

A: (a)   

Q: Enumerate 5 importance of COORDINATION COMPLEXES

A: Coordination compounds are the compound that are made from transition elements.

Q: Provide the proper IUPAC or common name for the following compound. yoe HO OH

A:

Q: Question 12 All of the following are TRUE about molecular fluorescence spectroscopy, except: O A. th...

A:

Q: the activity below. Directions: Mark check (/) on the box if the substance is polar/nonpolar, has Io...

A:

Q: Why do chemist use models of atoms and molecules?

A: We are to discuss why models of atoms and molecules are used by chemists.

Q: Calculate [HgCI4^2-] in a solution prepared by adding 0.0200 mol of NaCI to 0.250 L of a 0.100-M HgC...

A: Answer: In any reaction limiting reagent is the reactant which gets exhausted first decide the yield...

Q: The rate constant for this first-order reaction is 0.770 s- at 400 °C. A → products How long, in sec...

A:  

Q: Question 2 What is the molar extinction coefficient if the pathlength of the sample cell is 5.6mm an...

A:

Q: PART 1: Write the half - reaction of each redox reaction and determine the oxidizing and reducing ag...

A: Redox reaction is defined as the reaction in which oxidation reduction take place or which involves ...

Q: Which of the following statements are true of atomic emission spectroscopy (AES)? I. Atoms are promo...

A:

Q: Determine the reaction-rate law and the value of the rate constant. 2 NO(g) + Br2(g) → 2 NOBr(g)  ...

A: We have to predict the rate law and the rate constant value.  

Q: Predict the direction for the reaction and explain. [CuI4] (aq) −2 + [CuCl4] (aq) −3 ⇌ [CuCI4] (aq) ...

A:

Q: Which of the following is FALSE about the absorbance of a compound? O A. Organic solvents have effec...

A: Ans. (A). In organic chemistry, solvents can have an effect on solubility, stability and reaction ra...

Q: An environmental engineer analyzes a sample of air contaminated with sulfur dioxide. To a 500.-mL sa...

A: Answer: By the use of stoichiometry, we will calculate the number of moles of SO2 and then by the us...

Q: The rigid rotor model is often used to study the rotation of diatomic molecules. In this case, there...

A:

Q: Here is a schematic of the Joule- Thomson experiment: a) Is Pi= P2, P,< P2, or Pi P2? P,V.T Porous p...

A: In the Joule-Thomson experiment, the gas is allowed to pass through the porous plug under adiabatic ...

Q: A 500.0 ml adrenaline (Mw =183.2 g/ mol) solution in water with a concentration of 1,00 mg/ml must b...

A: Calculation of molarity from concentration given concentration(mg/ml)molecular weight(mg/mmol)

Q: An instrument designed to measure the wavelength/wavenumber with great accuracy is called alan O tra...

A: Instrument designed to measure the wavelength/wavenumber with great accuracy is called:

Q: CI Br

A:

Q: Refer to the given pair of structure, the structures are functional isomers B) positional isomers co...

A:

Q: The standard addition method is used to analyze a sample of a river water for mercury. Solution A is...

A: A question based on tools in analytical chemistry that is to be accomplished.

Q: 2 If a pharmacist added 12 g of azelaic acid to 50 g of an ointment containing 15% azelaic acid, wha...

A:

Q: II B C D What is the design of figure Il? double beam spectrophotometer diode array spectrophotomete...

A:

Q: Attached is the H NMR for an unknown aldehyde reacted with acetophenone (in an aldol reaction) The ...

A: The structure of the unknown molecule can be derived by analyzing the results obtained from proton N...

Q: In an experiment to determine the riboflavin by fluorescence spectrometry, a series of riboflavin st...

A:

Q: Question 35 Which of the following will cause an instrumental deviation in Beers Law? I. stray light...

A:

Q: Balance the following equation with the smallest whole number coefficients. What is the coefficient ...

A: Reaction is :-  LiBF4 + H2O ------&gt; H3BO3 + LiF + HF

Q: what is the product?

A:

Q: estion 8 Which process in the diagram below shows fluorescence? Singlet excited statos 2 Triplet exc...

A: Fluorescence is the process in which radiation are emitted by the the molecule and it pass into the ...

Q: 0.003 - 0.00218 0.002- M 0.001- 10 15 20 25 30 seconds created Is H2O2 being created or destroyed by...

A: The concentration v/s time curve of H2O2 is given as,

Q: 20. Which of the following pressures is equal to 0.80 atm? a. 9.5 x 10 torr b. 1.3 bar c. 24 in. Hg ...

A: Given : We have to calculate the which pressure is equal to 0.80 atm

Q: Which of the following statements are true for chemical interference? I. Releasing agents are added ...

A: Solution is given below in next step

Q: You have 354 mL of chlorine trifluoride gas at 762 mmHg and 48°C. What is the mass (in g) of the sam...

A: 1 atm is equal to 760 mmHg