Calculate the Carnot efficiency of a heat engine that has fluid temperature of 2,100 K down to 600 K. If this same engine turns 950 J of input energy into 400 J of useful work, what is its thermodynamic efficiency? Given: Show your complete solution What is asked? What equation should be used?

Q: 20. The normality of H2SO4 is equal to multiply its molarity. a. Half b. One с. Two d. Three e. Four

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Q: 36) Identify the formal charge on the indicated atoms in the following A) SO4²; S and O B) CN- ; C…

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Q: HCl can be standardized against: I.   Na2CO3                                   II.  KHC8H4O4…

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Q: Required: Volume of water Normality of HCl Normality of NaOH

A: Given as The volume of HCl=94.92 mL The volume of NaOH=43.76 mL The volume of water needed for a…

Q: QUESTION 3 A 500 mL solution contains 0.00375 mole of hydrazine, N₂H4. The pH value of the solution…

A: molarity is defined as number of moles of solute divide by volume of solution

Q: 2) How effective is a rechargeable battery after each time you charge it?

A: Answer to how effective is a rechargeable battery after each time we charge it.

Q: 33. Calculate the copper(II) ion concentration at 25 °C in the cell Zn(s) + Cu²*(aq) → Zn²"(aq, 1.0…

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Q: Determine the diffraction angle of a polycrystalline material alpha-Fe BCC at (211) plane with…

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Q: From the following list, select all salts that would form an acidic aqueous solution.     LiClO2…

A: For these salts , we would write their dissolution in water and check the strength of acid and base…

Q: A newly synthesized drug was found to have a carboxyl group, an imide and a sulfonamide group. The…

A: Weakly acidic pharmaceutical substances are titrated effectively by making use of a suitable…

Q: ow might you use a Grignard reaction to prepare the following alcohols: ) ОН (b) ОН (c) ОН -CH3…

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Q: Consider the following transformation and answer the questions that follow. OTBS OTBS OTBS OTBS Bno…

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Q: HCI (aq) KHCO3 (aq) complete ionic equation:

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Q: What are the IUPAC names of the following compounds

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Q: What is the average kinetic energy of the electrons ejected based on the incident light and the work…

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Q: 0.369 mol of a weak base (pKb = 5.52) is added to 0.298 mol of the salt containing its conjugate…

A: Buffer solution has tendency to maintain constant pH upon addition of small amount of acid or base.…

Q: For the reaction below, what coefficients can be added to balance the reaction: CO H2 C6H14 H2O

A: We can balance the chemical reaction by using hit and trial method.

Q: Q(3): Figure below shows a plot of the logarithm (to the base 10) of the diffusion coefficient…

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Q: 1. Which color is produced when egg albumin is treated with NaOH and diluted CuSO4 solution? A.…

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Q: Name in the order listed the class to which each of the following structures belongs:   CH3-CH2-F,…

A: We have to name in the order listed the class to which each of the following structures belongs.

Q: Calculate [H30*] for a 0.0038 M Ba(OH)2 solution. What is the answer please

A: The molarity of the barium hydroxide solution is 0.0038 M. The barium hydroxide is a strong…

Q: Chiorine exists in natute aga mixture ot stable isotopes ,cl-35 and ct-37:74 the atomic magg of…

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Q: What is the percent ionization of 7.5x10-2 M HCN?  Ka =  4.0 x 10-10  for  HCN.

A: Given, Concentration of HCN (C) = 7.5 × 10-2 M Ka for HCN = 4.0 × 10-10 Percent ionization = ?

Q: 21) Which of these represents the reaction of a phenolic antioxidant neutralizing a free radical 7…

A: In the given question we have to find out the reaction which represents the phenolic antioxidant…

Q: 5. When a liquid cools below its freezing point before crystallization occurs, the liquid a. is an…

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Q: A Pyrex beaker is filled to the brim with 250 ml of glycerin at 15oC. How much glycerin overflows at…

A: Given, the volume of glycerin = 250 ml            Initial temperature, T1 = 15oC            Final…

Q: 4. During the synthesis of Nickel, Ammonia, and Chloride coordination compound, what would happen to…

A: To explain what happens to the product yield if the synthesis was done at 100 oC instead of 60 oC.

Q: 13. Assuming ideal behavior, which the following aqueous solutions should have the LOWEST freezing…

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Q: A 0.8250 g of soda ash sample was dissolved in distilled H O and diluted to 250-mL using a…

A: Please find the below attachment.

Q: 31. Which of the following liquids would you expect to have the lowest vapor pressure at room…

A: In this question, we will see that which compound have the lowest vapour pressure at room…

Q: The Ksp of CaCO3 at a certain temperature is given to be 7.3 × 10-9. What is the molar solubility…

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Q: A solution of HCl at a certain temperature has a density of 1.159 g/mL. The mole fraction of the…

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Q: A mixture of argon and mercury vapor are often used in advertising signs. The threshold value to…

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Q: 3. Name the unknown drug: On addition of hydrochloric acid (diluted 8.3%), gas is released, when…

A: On addition of hydrochloric acid (diluted 8.3%), gas is released as follows: MCO3+2HCl →…

Q: 3. Consider the reaction between solid CaCO3 and aqueous HCl. The reaction will be sped up by an…

A: The mentioned reaction is as follows; CaCO3 + 2 HCl →  CaCl2 + H2O + CO2 We have to find which of…

Q: How many moles of aluminum will be needed to completely react with 12 moles of Br2 according to the…

A: Given-> Moles of Br2 = 12 mole 2Al + 3Br2 ----> 2AlBr3.................(equation-1)

Q: A gas made up of atoms escapes through a pinhole 4.58 times as fast as Kr gas. Write the chemical…

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Q: Calculate the volume of 1.0 mol/L NaOH and the volume of water he needed to make 75.0 mL of 0.10…

A: Here we have to find the volume of water required and volume of 1.0M NaOH solution required to…

Q: Determine he nmber of atome of o 41.2 gooms of çc Hip OG .

A: Mole can be defined as a standard unit for measuring large quantities of very small entities such as…

Q: CH3-CH2-COO-CH2-CH2-CH3

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Q: 12. An unknown precipitate of sulfide from the Group II cations dissolves upon the addition of 20…

A: In the given question we have to find the unknown cation by finding out the unknown precipitate of…

Q: 3.Given the close system at equilibrium: CO2(g) CO2(aq) As the pressure on the system increases,…

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Q: Determine the EA for the rate-determining step (step 1) for this reaction coordinate diagram, in kJ.…

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Q: Markovnikov's rule is needed to predict the organic product in which of the following reactions?…

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Q: 2.4. Consider a buffer solution that is 0.24 M NH3 and 0.20 M NH CI If 0.005 mol of NaOH is added to…

A: We would first Calculate initial pH of buffer solution. Then we need to calculate oH after adding…

Q: In non-aqueous volumetric methods: I. Carbon dioxide and water is excluded to prevent these from…

A: Non aqueous titration

Q: 2.00 L of sulfuric acid, H2 SO4 (ag), contains 0.70 mol of acid. Calculate the pH and the pOH of the…

A: Given, moles of H2SO4 = 0.70 mol Volume of the solution = 2.00 L pH of the solution = ? pOH of the…

Q: Which of the following hormones increases blood glucose levels? a. glucagon and epinephrine b.…

A: The hormones in the human body balances the blood glucose level.  They have very important role in…

Q: What is the reaction on the oxidation of aniline?

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Q: A galvanic cell is powered by the following redox reaction: 3 Br,(1) + 2 Cr(OH),(s) + 10 OH¯(aq) + 6…

A: Here we are required to find the cell potential of the given electrochemical reaction.