A system does 566 kJ of work and loses 216 kJ of heat to the surroundings. What is the change in internal energy, AE, of the system? Note that internal energy is symbolized as AU in some sources. 782 kJ

Q: Four liquids are described in the table below. Use the second column of the table to explain the…

A: Given: density of water = 1.00 g/mL Kf of water = 1.86 oC/m Kb of water = 0.512 oC/m Normal freezing…

Q: Consider the titration of 100.0 mL of 0.100 M H2NNH2 (Kb = 3.0 ✕ 10-6) by 0.200 M HNO3. Calculate…

A: Weak base and it's salt form buffer

Q: The flow rate through a channel can be determined using a weir by the following formula: Q = 5.4LH15…

A: We have find out flow rate in m3/s.

Q: Which azimuthal quantum numbers can exist for n = 3?

A: In this question, we have to write the azimuthal quantum numbers can exist for n = 3.

Q: 3. If I place 2.5 moles of O2, 3.5 moles of CO, and 4.5 CO, in a 42 L container at a temperature of…

A:

Q: What is the concentration in %m/v of a 0.607 M aqueous solution of dimethyl ether (MM = 46.07…

A: In multiple questions, we solve only first questio according to the Bartleby guideline. Find out…

Q: tructure corresponding to each name: (a) N-m ethylaniline; (d) N,N-diethylaniline.

A:

Q: Arrange the following in order of increasing ionization energy. Ar Cl Li Na P

A: we need to arrange the elements in order of increasing ionization energy

Q: ) A 1 liter solution contains 0.363 M nitrous acid and 0.484 M sodium nitrite. Addition of 0.399…

A:

Q: D.25 (a) Classify each monosaccharide by the type of carbonyl group and number of carbons in the…

A: Given compounds are monosaccharides

Q: Which of the following aqueous solutions are good buffer systems? O 0.38 M barium iodide + 0.27 M…

A: Buffer solution formed by combination of weak acid or base with salt of weak acid or base…

Q: enoilose memeasiqeid olduod & abrnuoqmo0 pinsgroni a) An aqueous solution of sodium hydroxide is…

A: Note : Since you have posted multiple questions, we are entitled to answer the first only. Please…

Q: a Calculate the pH of a solution that is 0.20 M HOCI and 0.88 M KOCI. Ka = 3.5x10-8 pH = 8.1 b In…

A:

Q: When and how does a chemical reaction occur?

A: When two or more substance interact with each other and their bonds are breaks that place chemistry…

Q: For the reaction 2NO(g) + 2H2(g)N2(g) + 2H2O(l) H° = -752.2 kJ and S° = -351.6 J/K The standard…

A: Given reaction is :  2NO (g) + 2H2 (g) ---------> N2 (g) + 2H2O (l) Standard change in enthalpy =…

Q: Suppose we titrate 20.0 mL of 0.100 M HCHO2 (Ka = 1.8 × 10–4) with 0.100 M NaOH. Calculate the pH.…

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Q: Which statement best describes a chemical reaction? a. It always forms a precipitate. b. It always…

A: Which statement best describes a chemical reaction?  Answer  d. It always involves the production of…

Q: Calculate the temperature (in kelvins) at which the sign of AG° changes from positive to negative…

A:

Q: reference to acid rain, the amended Clean Air Act forces utilities to decrease their production of…

A: Clean Air act reduce the main pollutants that contribute to acid rain ,suphur dioxide and nitrogen…

Q: Give 5 advantages of using ATR-FITR in research. Use 5 sentences/phrases only.

A:

Q: Give the correct electron configurations of Cr and Cu. Explain why they do not have the expected…

A: A) Electronic configuration of of Cr =                       [Ar]3d54s1  electron configuration is…

Q: 54 What ester is formed when each carboxylic acid is treated with 2-propanol [(CH),CHOH] in the…

A:

Q: properties from left to right. However, the pattern of properties within a period repeats as you…

A: In this question, we have to explain what does periodic law state and mean.

Q: If 200. mL of a 0.75 M NaCl solution is diluted to a volume of 600. mL, what is the final…

A:

Q: Consider the equilibrium system described by the chemical reaction below. At equilibrium, a 5.0 L…

A: At equilibrium-> Volume =5.0 L Mole of CH4 = 1.2 mole Mole of H2S = 2.8 mole Mole of CS2 = 0.63…

Q: 4. The unbalanced decomposition reaction of butane gas in excess oxygen produces carbon dioxide gas…

A: No.of mole = Mass of substance/ molar mass Volume of 1 mole of gas at STP is 22.4 litre.

Q: What is the most proper name of this compound? ...CH CH3 O (S)-1,2-epoxy-2-methylpentane…

A:

Q: What is the ΔHfus of ethanol (46.06 g/mol) which has Kb of 1.99 and freezes at -117.3 °C

A:

Q: Using the data in the following table, calculate the reaction rate of SO,(g) with O2(g) to give…

A: 2SO2(g) +O2(g) --> 2SO3(g)

Q: What pH range is a HCN – NaCN buffer effective?

A:

Q: The specific heat of a certain type of metal is 0.128 J/(g⋅∘C).0.128 J/(g⋅∘C). What is the final…

A: Given,  The specific heat of a certain metal is 0.128 J/(g⋅∘C). The final temperature if 305 J of…

Q: During dehydration reactions, the hydrogen atom maybe removed from an oxygen atom whereas in a…

A:

Q: are studying a 3.0 g sample of spinal fluid and discover that it contains 2.27 mg of glucose. What…

A: Given-> Weight of spinal fluid = 3.0 g Weight of glucose = 2.27 mg = 2.27 × 10-3 g=0.00227g (1 g…

Q: 6. Arrange the following atoms in order of decreasing size-la atoms are in their ground states.) a.…

A:

Q: OH H2SO4 + enantiomer H20 Minor Products Major Product

A:

Q: What is the pH of a 1.0 L buffer made with 0.300 mol of HF (Ka =6.8 x 10-4) and 0.200 mol of NaF to…

A: We have to predict the pH of the solution.

Q: What ratio of CH;NH2 to CH;NH3* is needed to prepare a pH 9.70 buffer? (Kb for CH;NH, is 4.4 × 10-4)

A: Buffer solution: The solution that resists the change in pH is known as a buffer solution. The…

Q: 2. What is the temperature (in °C) of 28.89 grams of nitrogen dioxide at a pressure of 1530 torr…

A:

Q: A particular reactant decomposes with a half-life of 121 s when its initial concentration is 0.264…

A:

Q: insoluble compounds. The Ksp for AgIO₃ is 3.0 x 10⁻⁸ and the Ksp for La(IO₃)₃ is 7.5 x 10⁻¹². What…

A: Given, Assume , Solubility of La(IO3)3 = s Ksp for La(IO₃)₃ is 7.5 x 10-12 Concentration of IO3- in…

Q: there may be several correct answers Group-wide reaction to drugs of the tropane group: A. Zinke…

A: Correct option is C.

Q: Draw the major organic SN1 product for the reaction shown.

A:

Q: The equilibrium constant, Kp, for the following reaction is 2.20×104 at 723 K. 2NH3(g) N2(g) +…

A:

Q: A 0.245−mol sample of HX is dissolved in enough H2O to form 595.0 mL of solution. If the pH of the…

A: pH= 3.60

Q: Below is one of the polypeptide chains in the insulin structure. a. What is the amino acid residue…

A:

Q: When a 3.00 g sample of KCl is dissolved in water in a calorimeter that has a total heat capacity of…

A:

Q: In a solution of Ba(OH)2, if the concentration of the hydroxide ion is 0.45 M, what is the…

A: Barium hydroxide is a strong base which undergoes complete dissociation in aqueous solution giving…

Q: How do you draw the furanose and pyranose forms of D-ribose (chemical structure)?

A:

Q: A reaction at-11.0 C evolves S84. mmel of sutur tetraftuoride gas Calculate the volume of sutur…

A:

Q: Draw the structure of one ketone body, and describe circumstances under which you would expect to…

A: Ans. Ketone bodies (acetoacetic acid, beta-hydroxybutyric acid, and acetone) are found in the blood…

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.