Solid Liquid Gas If you are changing states of matter from gas --> liquid --> solid, what happens to the energy?

Q: i) H3C H3C H3C H3C CH3 CH 3 CH3 CH3 OH Д NH H2C, H₂O+

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Q: Provide balanced equations for the following: 1)___C7H14 + 0₂ _CO2+ __H2O Type here to search KO₂ +…

A: Given : unbalanced reactions  Tip : multiply with smallest whole number, on less number of atom side

Q: A weather balloon is filled with 135.0 L helium at sea level where the pressure is 1.000 atm at 20.0…

A: To solve this problem we will use the combined gas equation  Which is given as  P1V1/T1 = P2V2/T2…

Q: Which alkali metal would you predict would require the shortest wavelength of light to eject an…

A: Energy required to eject an electron form a metal surface depends upton its ionization energy.…

Q: CH3 CH3CHCH₂CHCH I OCH₂CH₂CH3

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Q: Which of the following salts is most likely to form an aqueous solution having the pH shown in the…

A: The concept used in this question is from Acids and bases. According to the question Given pH of…

Q: Arrange these species by their ability to act as an oxidizing agent. Best oxidizing agent

A: A good oxidizing agent is that which is reduced easily and oxidise other easily. An element which…

Q: What is the name of the following compound? Nona-1,8-diene 1,7-dioctyne Octa-1,7-diyne…

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Q: The heat of fusion AH, of ethyl acetate (C4H8O₂) is 10.5 kJ/mol. Calculate the change in entropy AS…

A: we have to calculate the change in entropy

Q: I. II. OH & & A ola NO₂ B OH B NO₂ CH3 of ob C III. Outline a method based on extraction techniques…

A: Extraction is a technique to separate components of a mixture. In this technique, a solvent is…

Q: Using the following data reactions:                                                         ΔH° (kJ)…

A: Given reactions: H2(g) + Br2(g) → 2HBr(g)  ΔH°  = -103 kJ H2(g) → 2H(g)  ΔH°  = 432 kJ Br2(g) →…

Q: An x-ray has a wavelength of 3.02 Å. Calculate the energy (in J) of one photon of this radiation.…

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Q: 6. The molar volume of a certain solid is 161.0 cm³/mol at 1.00 atm and 350.75 K, its melting…

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Q: ОН

A: The IUPAC names of the two compounds are given below -

Q: HCO3* Lewis Structure (with formal charges) Hybridization VSEPR Shape of each central atom Bond…

A: The concept used here is from  chemical bonding of inorganic chemistry.  Here we have to talk about…

Q: a. 12(s) is [Select] b. C3H8(l) is [Select] c. PC13(1) is [Select ] d. PBr3(s) is [Select] [Select]…

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Q: Identify the value of x (mass number of Q) to complete the balanced nuclear equation for the…

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Q: A student dissolves 10. g of aniline (C6H5NH₂) in 425. mL of a solvent with a density of 0.98 g/mL.…

A: Given : mass of aniline = 10 g  Tip : molarity = moles / volume of solution (L)      Molality =…

Q: An analytical chemist is titrating 186.4 mL of a 0.3400M solution of methylamine (CH3NH₂) with a…

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Q: Predict wether this reaction is product-favored or reactant-favored at room temperature by…

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Q: With the use of resonance structures, explain why OH group of phenol is an ortho/para director.…

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Q: DHg (OAC) CH₂OH 2) Na BHy NaOH

A: This is an example of oxymercuration oxidation reaction. In first step it forms cyclic mercuric…

Q: Study this chemical reaction: Sn+2 Cl₂ → SnCl4 Then, write balanced half-reactions describing the…

A: Oxidation : The reaction in which electron are lost.  Reduction : The reaction in which electrons…

Q: calculate the pH at the equivalence point of a titration of 0.3326 g of THAM (the pKa of the conj. A…

A: The concept used here is from Acids and bases.  We have to find pH in this question.  Also formulae…

Q: Which monomer can combine 18 18 a polge a b. CH=CH₂ + CH=CH₂ C. CH₂=CH 0 0 HỌ —CH,CH,CH,C —OH +…

A: Option C will correct.

Q: 5. Both oxygen atoms in acetic acid (CH3CO₂H) are capable of hydrogen bonding, a feature that…

A: Hydrogen bonds are one of the intermolecular forces which are formed when a hydrogen atom bonded to…

Q: Which one of the molecules below has a chiral (optical) isomer? a. C. b. H-C a H3C-C-CH3 H₂C-CH3 C…

A: Chiral carbon- A chiral carbon atom is a carbon atom that is attached to four different types of…

Q: To which category does the following reaction belong? -CH₂CH₂CI+ OH- elimination substitution…

A: We have to tell the type of the reaction.

Q: Use the References to access Important valdes if needed for this questio11. Use standard reduction…

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Q: The compound Al4C3 decomposes when heated according to the equation below. Al4C3 (s) + 12 H₂O (1)→ 4…

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Q: Ethylhexanote is treated with sodium hydroxide. What are is/are the products from this reaction?…

A: Ester on hydrolysis to give Acid and alcohol

Q: hat aromatic product would you expect to obtain from oxidation of Tetralin with potassium…

A: Solution: We know KMnO4 is the strongest oxidizing agent and oxidize almost all organic compounds.…

Q: The "Like Dissolves Like" rule for covalent compounds states that [Select] solutes will dissolve in…

A: Solubility rule  As like as means polar dissolve in polar and non polar dissolve in non polar…

Q: Using the Frost Circle method to outline the molecular orbitals of cyclobutadiene, and identify…

A: we have to draw molecular otbitals of cyclobutadiene and determine if it is aromatic, antiaromatic…

Q: Match the type of preparation with the representative element

A: Given : elements and process

Q: Why should carbon dioxide fire extinguishers be avoided for magnesium fires? Magnesium will react…

A: Carbon dioxide is usually used as a fire extinguisher but not in case of Magnesium fires. It is…

Q: a. Br₂(l) is [Select] b. C8H18(l) is [Select] c. AgCl(s) is [Select] d. PC13(s) is [Select] ✓in…

A: Polar solute is soluble in polar solvent and non-polar soute is soluble in non-polar solvent.  C6H6…

Q: What is the mole fraction of solvent in a solution of aqueous sucrose (a nonelectrolyte) that has a…

A: According to Raoult's law: PA = XA PA0 where, PA = Vapour pressure of solution; XA = mole fraction…

Q: y=& OH g) LAH A CI 1) Naº 1) Mg 2) CO₂ 2) Bri ОН of S I no KOBr NH₂ H3C K₂Cr₂O7 A h) A H* CH3 H3O* B…

A: The above problems are based on the interconversion of functional groups by using wide variety of…

Q: a) Write out 6 completely different reactions of pentanal (reagent, product). b) Maits

A: We have find out the different reactions of pentanal.

Q: A What is the mass percent of potassium chloride when 9.35 grams of potassium chloride is mixed into…

A: Given : mass of KCl = 9.35 g               Mass of water = 162.98 g

Q: Strontium hydroxide, Sr(OH)2, is sometimes used to extract sugar from molasses by forming a soluble…

A: First we need to calculate the moles of HNO3 solution used. Then using the mole ratio we can…

Q: What salt is formed in the following acid-base reaction? LiOH (aq) + H3PO4 (a 4 (aq) Give the…

A: Acid base reaction is the chemical reaction in which an acid reacts with a base to form a salt and…

Q: A 6.00 L tank at 14.5 °C is filled with 10.2 g of sulfur tetrafluoride gas and 5.04 g of carbon…

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Q: What temperature (in °C) did an ideal gas shift to if it was initially at -31.5 °C at 4.62 atm and…

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Q: Use bond energies to calculate the heat of reaction: C-N C-O C=O C=O (in CO₂) O-H N-H kJ H =O+2N-H…

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Q: The concentration of alcohol in a mixture prepared by combining 400 mL of 95% v/v alcohol, 500 mL of…

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Q: 3. Draw the most stable chair conformation of (cis)1,4-difluorocyclohexane. 4. State whether these…

A: Given : name of compounds and structure

Q: formation of the C-O a-bonding molecular orbital? HÖ:/ Problem viewing the image. Click Here O…

A: Hybridisation is the concept of mixing atomic orbitals to form hybrid orbitals which are suitable…

Q: Given the following balanced chemical reaction: CO (g) + 2 H₂ (g) CH3OH (g). Determine the value of…

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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.