why does the change in internal energy decreases as the volume of ethanol increases? For 25ml ethanol/ 75ml water   For 50ml ethanol/50ml water   For 75ml ethanol/25ml

Q: A diprotic acid (H,A) has Ka1 = 4.27 × 10-7 and K42 = 5.98 × 10-1!. What is the pH of a 0.437 M H, A…

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Q: Heavy nuclides with too few neutrons to be in the band (zone) of stability are most likely to decay…

A: The correct answer about the stability of Heavy nuclides is given below

Q: Calculate [H,O*] for a 5.04 x 10-3 M HBr solution. [H,O*] = M Calculate [H,O*] for a 1.60 × 10-2 M…

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Q: 0.8844 g of cyclooctan-1,3-diol is burned in a bomb calorimeter with heat capacity of 11.63 kJ C^-1.…

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Q: A sample of gas (24.2 g) initially at 4.00 atm was compressed from 8.00 L to 2.00 L at constant…

A: Given, Initially Pressure of a gas (P1) = 4.00 atm Volume of a gas (V1) = 8.00 L Later: (after…

Q: 6. What are the possible values of the angular momentum quantum number (€) when n= 3 ? 7. What are…

A: There are four types of quantum numbers :-  Principle quantum number  Angular momentum quantum…

Q: What is the value of [H 3 O^ + ] in a solution with DH = 10.82 ?

A: pH = 10.82  The value of [H3O+] = ?

Q: What mass of propane, C3H8, must be burned in order to produce 76,000 kJ of energy? Is this reaction…

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

A: ∆H = (B.E)reactant - (B.E)product

Q: 15. A solute was added to a solvent and mixed well. Some of the solute settled to the bottom of the…

A: Given statement is :  A solute was added to a solvent and mixed well. Some of the solute settled to…

Q: Suppose a 500. mL flask is filled with 1.0 mol of I, and 1.6 mol of HI. The following reaction…

A: We have to predict the equilibrium concentration of iodine gas.

Q: The blue color in fireworks is often achieved by heating copper (I) chloride, CuCl, to about 1200°…

A: Energy of Photon:  E = hv  Where  E = energy  h = plank constant  v = frequency As we know that  v =…

Q: When a 24.4 mL sample of a 0.357 M aqueous hydrocyanic acid solution is titrated with a 0.322 M…

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Q: ce Ke

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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: The following reactions all have K>1. 1) CH3CO0 (aq) + HF (aq) F (aq) + CH3COOH (aq) 2) CH3CO0 (aq)…

A: Bronsted -Lowery acid-base theory:  Bronsted acid: Proton donar is called Bronsted acid  Bronsted…

Q: A mixture of gaseous reactants is put into a cylinder, where a chemical reaction turns them into…

A: Given: 154 KJ amount of heat flows into the system during the reaction. And the position does 364 KJ…

Q: Question 2 The vapor pressure of butane at 300 K is 2.2 bar and the density is 0.5788 g/ml. What is…

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Q: Decide what kind of crystalline solid each element or compound in the table forms, and what kind of…

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Q: Which atom has the most exothermic electron affinity? a) N b) Al c) O d) Li e) F

A: Among these atom which has the most exothermic electron affinity is given below

Q: g of water at 20.5°C. The equilibrium temperature of the water and metal is 30.5°C. Using the A…

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Q: delete 4. 8. 5. 6. 7. R. P. E. enter H. return B alt MOSISO command option

A: Temperature is constant so  P1V1 +P2V2 = PV

Q: ne pH of a buffer solution

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Q: In an unknown sample, the amount of ascorbic acid (C6H8O6) is determined using coulometry. Analysis…

A: Given: Amount of the sample = 250.0 mg Time to reach endpoint with starch after reaction with…

Q: Imagine an altermate universe where the value of the Planck constant is 6.62607 x 10 J-s. In that…

A: Given,  Value of Planck constant = h = 6.62607 x 10-40 J.s

Q: heat change

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Q: The volume of HCl gas required to react with excess magnesium metal to produce 6.82 L of hydrogen…

A: First write the reaction for magnesium metal with H2 and then check mol to mol ratio to calculate…

Q: give an explanation of the semi-empirical mass formula

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Q: Calculate the pH at 25 °C of a 0.72M solution of lidocaine HCI (C4H2,NONH,CI). Note that lidocaine…

A: The value of pKb for the given weak base is = 7.94 The concentration of the base solution is = 0.72…

Q: Draw the structure of the missing intermediates and products in the following mechanism. Include all…

A: This reaction is the addition of HBr to an alkene in presence of peroxide. This reaction proceed…

Q: Consider the titration of 100.0 mL of 0.500 M HONH2 by 0.250 M HCI. (Къ for HONH2 %3D 1.1x10-8) Part…

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Q: H2(g)+Cl2(g) ---> 2HCl(g)      ∆H=-184.6 kJ Determine the mass, in grams, of chlorine gas consumed…

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Q: Question Which of the following has the potential to change the equilibrium in a reaction involving…

A: All the given options here are correct, all the options given here has the potential to change the…

Q: 23 ml of 0.0916M NAOH neutralizes an unknown volume of 0.12 M HCI. If 74 mL of HCI was added to…

A: Given: Concentration of NaOH = 0.0916 M Volume of NaOH solution required = 23 mL = 0.023 L…

Q: 1. Which product is formed by the reaction? ONa

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

Q: Draw a tine the thoough the on-carbon bond that id formed as9 Hesult of the aldol or Claison…

A: We have to draw a line where the C-C bond is formed through the Aldol reaction or the Claisen…

Q: How much heat will be transferred when 14.9 g of ammonia reacts with excess oxygen according to the…

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Q: 11. Which element has the largest atomic rądiys? a) Kor Li b) Zr or Cs or Sb or S 12. Which element…

A: Size of isoelectronic ions decreases with increase in atomic number...

Q: The molecule shown is a lipid. How would you classified it? H3 C-(CH2 ) 28 CH2 -Ô-C-(CH2 )16 CH3

A: Lipids are macromolecule made up of fatty acids. Lipid is any organic compounds that are insoluble…

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: Considering only ions with charges of +1, +2, -1 and -2, or neutral atoms, give the symbols for 4…

A: Species that have same number of electrons are called isoelectronic species.

Q: 2. In the quantum mechanical model of the atom, a maximum of 10 electrons is predicted to occupy a…

A: The correct answer about 6d electron is given below

Q: PPh3, DIAD CH2OH THF (A) mitsunobu H2N seaction NH2 excess AgOH (B) (C13H20 INS) me I me me

A: Since you have asked multiple questions we will answer the first one for you. To get the remaining…

Q: Complete the following reaction and determine the maximum weight of a soap that is produced by…

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Q: MN %24 A certain mass of nitrogen gas occupies a volume of 1.56 L at a pressure of 6.81 atm. At what…

A: Using the relation of P1V1= P2V2 ,  We can find the final pressure at which gas expand.

Q: 4. Show how to transform the compound on the left into the compound on the right. Several steps will…

A: Reaction : 1- pentyne reaction with sodamide and ethyl iodide.  Reaction : 3-heptyne reaction with…

Q: largest to smallest radius.

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Q: Which ions are isoelectronic with Xe? Te2+ Rb+ O Ba2+

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Q: 1. Write in the product: 1. O3 1-isopropyl-4-methylcyclohexene 2. Zn, H30*

A: O3 break the double bond and oxidise it.presence of zn metal is stop the further oxidation

Q: Describe how you would prepare 50 mL of a 5 mM NaCl solution from a 1 M NaCl stock.

A: