1.You need to prepare 1L of 1xTBE using your 10xTBE stock solution. How much 10xTBE and how much water do you need? 2.Prepare 3L of 0.5xTBE using a 5x concentrated stock solution?

Q: What is the pH of 0.18 M acetic acid? (Ka = 1.8 x 10-5).

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Q: 1. Which one of the following is an example of week electrolyte? 1. NaOH 2. Naci 3. CH3COOH 4.…

A: here we are required to classify the given compounds as weak and strong electrolyte

Q: Arrange the aqueous solutions from the most acidic to the most basic, at 25 °C. Acidic Basic Answer…

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Q: Substance AHf (kJ/mol) KCIO3(s) -397.7 KCI(s) -436.5 What quantity of heat is released when 1.00 g…

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Q: mass of matter (in grams)

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Q: Written Work: Directions: Identify the Reducing Agent and Oxidizing Agent in the following…

A: Oxidising agent is that species which oxidise the other and reduce itself and reducing agent is that…

Q: liquid and 90.0 g of water has a freezing point of -3.33°C. Given Kf = 1.86 °C/m for water, the…

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Q: A double bond between two carbon atoms in a molecule that contains fatty acids would cause the…

A: When the double bond present in the fatty acid then fatty acid is called unsaturated fatty acid.…

Q: 16. The combustion of cyclopropane is as follows: Known bond strengths (KJ/mole) C-H 413 C=0 799 O-H…

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Q: a) What are the important parameters for the eluent selection in Gel Permeation Chromotography…

A: Gel Permeation Chromatography is a size exclusion chromatography which separates molecules based on…

Q: 16. The combustion of cyclopropane is as follows: Known bond strengths (KJ/mole) C-H 413 C=0 799 O-H…

A: ∆Hrxn can be calculated u sing bond energies.  For this we count number of moles of each bond broken…

Q: 02 The exponential notation of 385,500 to one significant figure is: A. 3.8x 10 B.3.8x 10 C3 10…

A: Scientific notation: Scientific notation or exponential is a way of expressing numbers in decimal…

Q: A sample of CO2 was confined to a container at constant temperature. When the pressure applied to…

A: Given:: Initially, P1=6 atm , V1=5L

Q: Which of the compounds is more soluble in an acidic solution than in pure water? AIPO4 O CSCIO4 Cas…

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Q: How many moles of NH3  would need to be added to 512.9 mL of a 0.25 M solution of NH4Cl to produce a…

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Q: what is the melting point of divanillyl oxalate

A: Divanillyl oxalate can be made by the reaction of triethylamine, vanillin and oxalyl chloride.…

Q: %Transmittance 3462.98 3057.84 3022 51 1489.30 1443.83 1319 48 1155.12 1029.57 1008.82 754.45 693.07…

A: IR Spectroscopy used to determine the functional group. IT measures the vibration of atoms and based…

Q: HCN is a weak acid (K, = 6.20 × 10-10), so the salt, KCN, acts as a weak base. What is the pH of a…

A: Given-> Concentration of KCN = 0.0795 M Ka(HCN) = 6.20 × 10-10

Q: 9. Nitrogen dioxide undergoes a synthesis reaction with fluorine. The proposed mechanism is shown…

A: Answer: This question is based on the understand of rate of reaction and reaction mechanism that…

Q: Ibuprofen, the anti inflamatory ingredient in Advil has the formula C13H18O2 A) How many molecules…

A: We have to predict the molecules  , number of H atoms, mole of ibuprofen, mass of ibuprofen.

Q: 18_u-igNsIkr/18P3]H-IvdWKW_BBZZ16tTytly4Fcfu6zOtOf80MM9ssjVNAaf12UnyqOVi-iJmPnmc371rY... Spotify Web…

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Q: Which one is smaller?    Mg or Sr

A: Atomic number of Mg = 12  Atomic number of Sr = 38

Q: Which of the following reactions will be faster and why? H20 HBr Br Br

A: Both reactions pass through SN1 pathway . Reaction rate can be explained using stability of…

Q: What is the expected shape for the SO3 molecule?

A: Answer: In this question we have to predict the shape of the molecule on the basis of bonds formed…

Q: How is a total cholesterol test different from an HDL test? How is a total cholesterol test…

A: (2) The difference between TOTEL HDL and LDL Cholesterol Cholesterol is a fatty substance that…

Q: How many unique protons are present in each of the following compounds? НО. CI 03:58:43 II III еВook…

A: The concept of equivalent or unique protons is generally used in spectroscopic studies of any…

Q: 1-Find the reduction potential for the couple (Cl/Cl) at pH =14? 2. Which specie(s) can go…

A: Latimer diagram of Chlorine at pH =0

Q: Provide the correct IUPAC name for As2S5

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Q: Substance AHf (kJ/mol) KCIO3(s) -397.7 KCI(s) -436.5 What quantity of heat is released when 1.00 g…

A: The reaction given is, => 2 KClO3 (s) → 2 KCl (s) + 3 O2 (g)  Given: ΔHof{KClO3 (s)} = -397.7…

Q: Which one is larger?  K or  K+

A: K is the symbol of potassium  Atomic no. of K = 19

Q: Q3: For BCC iron, compute (a) the interplanar spacing and (b) the diffraction angle for the (220)…

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Q: specific heat of water, 4.18 J/g°C, determine the specific heat of the metal from equation 3. g of…

A: When the hot metal is dunked into the water, the heat is released by the metal and the equal heat is…

Q: What is the ΔHRXN for the following reaction?         N2(g) + 2O2(g) ⟶ 2NO2(g) Enthalpies for these…

A: • The required equation is,  N2(g) + 2O2(g) ⟶ 2NO2(g) ; ∆H= ??    • The given thermochemical…

Q: A student says :- "A solution with [OH^-] = 0.010 M must contain an acid that is stronger than the…

A: Given,  Statement is :  A solution with [OH-] = 0.010 M must contain an acid that is stronger than…

Q: A chemist titrates 110.0 mL of a 0.7452M aniline (C,H,NH,) solution with 0.5088M HCl solution at 25…

A: Given: The volume of aniline is 110.0 mL The molarity of aniline is 0.7452 M The molarity of HCl is…

Q: product of the compound in 2.a) with the following reagents. Include stereochemistry where relevant.…

A: 1. 2-butyne reacts with hydrogen and Pd/C gives n-butane. 2. 2-butyne reacts with Na and liq NH3…

Q: 3. A solution containing 10 g of NH3 at 90°C can be described as- ib e tuloa insoluble…

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Q: A solution was found to have a pH of 13.33 at 25 °C. What is the concentration of OH? O a. 0.21 M O…

A: To find the OH- concentration, first find out the pOH and using that pOH, find out concentration of…

Q: Prove X= h/p ac Einstein and Planck

A: Einstein equation,  E = mc2 ----(i)  Where,  E = energy  m = mass c = speed of light  Planck's…

Q: Indicate whether each process produces an increase or decrease in the entropy in the system. Please…

A: We have to predict whether we have increase or decrease in the entropy of the system.

Q: Please list four properties that describe a gas

A: Since you have asked multiple question, we will solve the first question for you. If youwant any…

Q: ) For the following reaction, after you balanced the redox reaction, please calulate ΔS, ΔH, and ΔG.…

A: 1) Given that unbalanced Chemical equation -  SO2(g) + O2(g) + H2O(l) yields H2SO4 (aq) (unbalanced…

Q: Suppose a 500. mL flask is filled with 1.2 mol of CO, 2.0 mol of H,0 and 0.90 mol of CO,. The…

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Q: What is the major product of the following reaction? Br2, -78°C С. Br Br- Br A. Br Br Br Br Br OA.…

A: At low temperature kinetic product is formed the product which form from most stable intermediate.

Q: 3D %3D 3D Draw one of the two enantiomers of the major product from this reaction. Use wedge and…

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Q: Among the following .is an example of precipitate in a solution. 1. КСI 2. KNO3 3. AgNO3 4. A9CI а.…

A: A compound will be soluble if it forms a solution in the given solvent. The solute will be dissolved…

Q: Calculate the pH at 25 °C of a 0.23M solution of sodium hypochlorite (NaClO). Note that hypochlorous…

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Q: a. Determine the [OH−][OH−] , pH, and pOH of a solution with a [H+][H+] of 8.8×10−9 M8.8×10−9 M at…

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Q: 4. a. Which of the following would be more reactive in an electrophilic aromatic substitution ?…

A: 4 a. Electron donating groups increases the reactivity of benzene ring towards electrophiles.…

Q: Calculate the Enthalpy of change in Kj/mol and % difference in the neutralization reaction below:…

A: The balanced neutralization reaction is: HNO2(aq) + NH3(aq)  ----> N2(g) + 2H2O(l) ; ∆Hrxn = -…