Assume the energy of hydrogen bonds per base pair to be 5.86 kJ-mol-1. Given two complementary strands of DNA containing 145 base pairs each, calculate the ratio of two separate strands to hydrogen-bonded double helix in solution at 319 K. ratio = 0

Q: Consider 25.6 g of sodium bicarbonate is reacted completely with 1.01 kg of vinegar. The starting…

A: The amount of heat released or absorbed in a reaction is given by the following equation.…

Q: Draw the major product of this reaction. Ignore inorganic byproducts. Assume that the water side…

A: The reaction given is,

Q: A gas-filled weather balloon with a volume of 60.0 L is held at ground level, where the atmospheric…

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Q: The orbital diagram of 13AI has , unpaired electron(s). O 1 O 2 O 3 О 13

A: Aufbau's principle :- It states that electrons are filled into the orbitals in increasing order of…

Q: a- Draw the mechanism and the products of the acid-base reaction shown below. o- Identify the role…

A: Given is acid-base reaction

Q: Which of the following statements is/are TRUE about the Calorimetry experiment?       I. The…

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Q: Analyze the NMR spectrum of the reduction product. Which splitting pattern is observed in the NMR…

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Q: 15.) What is the pH at the equivalence point in the titration of 100.0 mL of 0.10 M HCI with 0.10 M…

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Q: complete this Robinson annulation eaction in basic conditions with heat. Ignore inorganic…

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Q: How many moles are there in 176 g of Octane (C3H18)? O 0.57 O 1.54 O 0.65 O 1.76

A: Given, compound = Octane              mass of the given octane = 176 g Molecular formula = C8H18…

Q: H3PO4 i) H20 HBr ii) OMe

A: Draw the major product(s) of the following reactions and indicate the stereochemical relationship…

Q: PLEASE HELP WITH THIS QUESTION ONLY ACCURATE ANSWERS WOULD BE UPVOTED

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Q: H. NaOH, H20 A

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Q: Describe briefly the possible electronic transitions that lead to the absorption of electromagnetic…

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Q: What is the solubility, s, of CaF2 (Ksp = 3.4 x 10 11) in a 0.35 M CaCl, solution? %3D

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Q: 1,922 Joules of heat are added to 42.5 grams of water, initially at 20∘C. What is the final…

A: The final temperature is given below

Q: 1. The organic solvent thiophene is a carbon-hydrogen-sulfur compound that yields CO2, H2O, and SO2…

A: Given: Mass of compound burned = 1.3020 g. Mass of CO2 produced = 2.7224 g. Mass of H2O produced =…

Q: To measure the amount of nickel in some industrial waste fluid, an analytical chemist adds 0.1700M…

A: Given data,Molarity of NaOH=0.1700 MMass of sample=23.00 gMass od Ni(OH)2 produced=0.30 g

Q: Which choice gives the classification for D-threose? O aldotetrose O ketotetrose O aldopentose O…

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Q: J/k AS°system

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Q: What volume (mL) of 2.50 × 10-1 M hydrochloric acid can be neutralized with 105 mL of 0.300 M sodium…

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Q: 10. Identify the following as aromatic, non-aromatic, or anti-aromatic. List answers below. N'

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Q: 2 Propose a mechanism for copper mediated Chan-Lam coupling of aryl boronic acids and benzoic acids…

A: Interpretation- We have to propose a mechanism for copper mediated chan-Lam coupling of aryl boronic…

Q: What volume of a 0.550 M solution of potassium hydroxide can be made with 18.3 g of potassium…

A: Formula used:  Mole = weight/ Molar weight Molarity = no of Mole / volume in L  Given that  Weight…

Q: What is the Molecule weight of sarin gas?

A: Given -> Sarin gas

Q: Use ligand group orbital approach to describe the bonding in [CO3] 2- . Include schematic…

A: Solution: Bonding in [CO3] 2-  using ligand group molecular approach.

Q: 1. Write and balance chemical reactions that happen when Pt is dissolved using aqua regia forming…

A: The chemical reaction for the formation of H2PtCl6 is given below

Q: NO2 NaOCH2CH3, CH3CH2OH +

A: ->First of all base can abstract acidic hydrogen and form nucleophile which give Michael addition…

Q: molarity of the dilute KOH solution

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Q: ON: A B D E エーZ エ

A: ->For Aromatic compounds certain rules must followed. Must be cyclic Must be planar Follow…

Q: For a given reaction AH= -11.8 kJ/mol and AS= -207 J/mol-K at 55°C. Is the reaction spontaneous at…

A: Given: ∆H=-11.8 kJ/mol∆S=-207 J/mol·KT=55°C

Q: Can you make a conclusion for this table? Explaining how it gets the answer.

A: Red cabbage acts as a very good indicator for a variety of acids, bases, and neutral solutions of…

Q: (+) i) Vs (+) В A ii) CF3 +) CF3 +) Vs H2N H2N A B

A: 1)

Q: An electric current of 0.760 A flows for 54.0 seconds. Calculate the amount of electric charge…

A: The electric charge transported can be calculated as follows

Q: How would you make 5.00 L of a 2.00 M solution of sodium chloride if the GFW is 58.44 g ? To…

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Q: Platinum hexafluoride is an extremely strong oxidizing agent. It can even oxidize oxygen, its…

A: The answers are given below

Q: A) 2-bromobenzoic acid C) 2-E D) B) 3-bromobenzoic acid 3-b 50. What is the structure of…

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Q: If a solution containing 126.77 g of silver nitrate is allowed to react completely with a solution…

A: Given: Mass of AgNO3 taken = 126.77 g. And the mass of LiI taken = 13.37 g.

Q: Thirty grams of silicon at 80.0°C is added to 70.0mL of water at 20.0°C. Calculate the final…

A: Given: The mass of silicon = 30 g The initial temperature of silicon = 80.0 °C The volume of water =…

Q: How many moles in 3.0 L of a 2.00 M solution of sodium chloride ?

A: Given :-  Molar concentration/molarity of NaCl solution = 2.00 M or 2.00 mol/L  Volume of solution =…

Q: Provide an arrow pushing mechanism for the following reaction. Include protons and each step clearly…

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Q: Find the relation of the constants a and b of the Berthelot equation to the critical constants.

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Q: You dissolve 4.93 g of sodium bicarbonate (molar mass 84.007 g/mol) in 98 g of distilled water if…

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Q: Clearly indicate the acid and the conjugate acid in each of the following reactions and determine…

A: Equilibrium is favoured on the side where more stable product is formed.  Positive charge is more…

Q: Rank these compounds (attach photo) in terms of increasing acidity IV II > III > IV IV IV > II >…

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Q: Question 4 The rate of dehydrogenation of sec-butanol on a zinc oxide catalyst at 350°C and 1 atm…

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Q: Calculate the missing molarity in the line notation below that would cause this electrochemical cell…

A: The cell given is, Given: Cell potential, Ecell = 2.703 V

Q: TASK 3: COMPLETE THE TABLE! Does this increase or Explain why using Collision Theory. Change in…

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Q: How many mL of a 1.0 M NaOH solution would be used to deliver 20 grams of NaOH?

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Q: what quantum mechanical principles play a role in infrared spectroscopy? What applications is…

A: The answers are given below

Thermochemistry

Thermochemistry can be considered as a branch of thermodynamics that deals with the connections between warmth, work, and various types of energy, formed because of different synthetic and actual cycles. Thermochemistry describes the energy changes that occur as a result of reactions or chemical changes in a substance.    

Exergonic Reaction

The term exergonic is derived from the Greek word in which ‘ergon’ means work and exergonic means ‘work outside’. Exergonic reactions releases work energy. Exergonic reactions are different from exothermic reactions, the one that releases only heat energy during the course of the reaction. So, exothermic reaction is one type of exergonic reaction. Exergonic reaction releases work energy in different forms like heat, light or sound. For example, a glow stick releases light making that an exergonic reaction and not an exothermic reaction since no heat is released. Even endothermic reactions at very high temperature are exergonic.