What is conservation of energy and how does it relate to chemical reactions?

Q: Determine the K, of a weak base if a 0.28 M solution of the base has a pH of 10.14 at 25°C. K x 10

A: Given: Concentration of weak base (Assuming B) = 0.28 M And the pH of the solution = 10.14     

Q: 1. How many moles of KNO3 are needed to make 450 ml of 1.5 molar solution?

A: Given- Volume = 450 ml = 0.450 L (1L = 1000ml) Molarity = 1.5 M  

Q: a. Draw as many possible resonance structures of the molecule, (show the direction of electron trans...

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Q: calculated below. H-F Bond Energy: 567 kJ/mol example H2 (g) + F2 (g) 2HF AHxn = [energy used for br...

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Q: Consider the following system at equilibrium where AH° = -16.1 k), and K. = 154, at 298 K. 2NO(g) + ...

A: Eqilibrium of a reaction is a state of reaction in which rate of forward reaction and rate of backwa...

Q: Part A MISSED THIS? Read Section 19.9 (Eages. ): Watch WE.19.1. Consider the following reaction Calc...

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Q: Solve the following problems below as assigned by your group number. Then, move to your letter group...

A: The enthalpy change is a state function and the Hess law states that the change of enthalpy in a che...

Q: If the filter paper is weighed before instead of after being placed in the 105°C oven for an hour, w...

A: Limiting reagents are those reactant which is present in  lesser amount and is consumed first, This ...

Q: Calculate the solubility of Mg(OH)2 in 0.10 M NaOH. Calculate the solubility in grams/liter. MglOH)2...

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

Q: A student measures the molar solubility of calcium phosphate in a water solution to be 3.96×10-6 M. ...

A: Solubility can be defined as the maximum amount of solute that can be dissolved in a specific amount...

Q: Given the value of the equilibrium constant (K) for equation (a), calculate the equilibrium constant...

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Q: Sodium lauryl sulfate has the same use in embalming fluids as  1-sodium phosphate 2-citrates 3-su...

A: Sulfonates

Q: Calculate the thermal conductivity of Argon at 300 K and 15 Mbar. Gas is confined in a cubic vessel ...

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Q: When NH3(g) reacts with N20(g) according to the following reaction, 107.3 kcal of energy are evolved...

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Q: Suppose you have poured a cup of blue raspberry drink over ice in cup and let it sit to cool. Do you...

A: Given: You have poured a cup of blue raspberry drink over ice in cup and let it sit to cool.  

Q: Find the molarity of 186.55 g of sucrose, C 12 H 22 O 11 (molar mass = 342 g/mol) in 250 mL of water...

A: Given: Mass of C12H22O11 = 186.55 g. And volume of solution = 250 mL = 0.250 L                      ...

Q: The molar solubility of silver sulfide in a 0.134 M potassium sulfide solution is ______  M.

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Q: Li, pentane, Cul СH CH,Br, ether е.

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Q: For each problem, state: a. Law being used  b. What was held constant or assumed to be constant  c. ...

A: Charles law states that at constant pressure (P) and fixed mass of gas ( n), the volume of the gas (...

Q: Dutline the steps used to find values for a BLOSUM amino acid similarity matrix.

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Q: The radioactive isotope Thallium-201 is used in medical diagnosis and treatment. A gamma ray emitted...

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Q: Aqueous solutions of barium chloride (BaCl) and sodium carbonate (Na2CO3) react to form solid barium...

A: Given: The volume of the 0.200 M barium chloride added = 100 mL The volume of the 0.150 M sodium car...

Q: Consider the following reaction: 2503(g) 2s02(g) + 02(g) If 7.79x10-2 moles of So3(g), 0.491 moles o...

A: Equilibrium constant ( Kc ) is the ratio of concentration of products to reactants at equilibrium ra...

Q: The equilibrium constant, Ke, for the following reaction is 2.90x10-2 at 1.15×10³K. 2S03(g) =2s02(g)...

A: The equilibrium constant of a chemical reaction is the value of its reaction quotient at chemical eq...

Q: A student attempts to determine the buffer capacity of a solution by titrating 40.0 mL of solution w...

A: Given: Volume of buffer solution = 40.0 mL = 0.040 L                                    (since 1 L =...

Q: 4. Oxidation: Zn(s) → Zn?+ (aq) + 2e E°ox = + 0.76V Reduction: Cu² (aq) + 2e → Cu(s) E'red = + 0.34 ...

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Q: Mg, ether Br H,O

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Q: 0.38 Calculate the heat released when 32.0 g of steam at 115.0°C condenses and then the water is con...

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Q: e. HCOOH + MNO4¯→CO, + Mn2* in acidic solution

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Q: Part A: The volume of a gas at a pressure of 99.0 kPa is 300mL. If the pressure increases to 188kPa...

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Q: What is the conjugate base of HCO3 ? Express your answer as a chemical formula. > View Available Hin...

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Q: What attraction exist in carbonyl compound with less than five C atoms that makes it water-loving?

A: A question based on intermolecular force of attraction that is to be accomplished.

Q: Draw the structure of products A, B, and C.

A: Carboxylic acid reacts with an amine to form and amide. The reaction proceeds by nucleophilic additi...

Q: Enter your answer in the provided box. For the reaction N2(g) + 3H,(g)5 2NH3(g) Kp is 0.000385 at 35...

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Q: ?? Remember - can't use simple enolate/enol 7. for SN2 type reaction.

A: For addition to alpha to carbonyl compound, we have to convert that centre to nucleophilic centre. N...

Q: Calculate the change in entropy associated with the Haber process to produce ammonia from nitrogen a...

A: N2 (g)+3H2 (g)⇌2NH3(g) So(H2) = 130.6 J/mol K So(N2) = 191.50 J/mol K So(NH3) = 192.5 J/mol K

Q: An analytical chemist is titrating 84.9 mL of a 0.2500M solution of hydrazoic acid (HN,) with a 0.74...

A: Here we have to determine the pH of solution if 20.9 ml of 0.74M solution of NaOH is added to 84.9 m...

Q: If 100.0 mL of potassium dichromate solution (10.0 g of K2Cr207 per liter) was mixed with 75.0 mL of...

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Q: 3. An alcohol-water solution is 45.0 percent alcohol. How much solution is required to obtain 150.0 ...

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Q: (c) Estimate the wavelength of electrons that have been accelerated from rest through a potential di...

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Q: Consider the following reaction 8A(g) + 5B(g) → 8C(g) + 6D(g) If [C] is increasing at the rate of 4....

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Q: Retrosynthesis. Provide reagent(s) that would accomplish each of the following reactions. 2 CO

A: Introduction :  Coupling reaction in organic chemistry is a term use for those types of reactions in...

Q: Part A A current of 11.4 A is applied to 1.25 L of a solution of 0.557 mol L-1 converting some of th...

A: Given: Current = 11.4 A. Time passed = 78 min = 78 × 60 = 4680 s                                 (si...

Q: Consider the following acidic e xO Chapter 13 Q's Flashcards | Qui x C Expert Q&A x b Search results...

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Q: A buffer solution is 0.100 M in both HC¬H5O2 and LICH5O2 and has a pH of 4.19. Which of the followin...

A: Buffer solution is the solution which resist change in pH on addition of small amount of acid and ba...

Q: A buffer solution contains 0.204 M NH3 and 0.262 M NH4Cl. What is the pH of the buffer solution afte...

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Q: Determine the concentration (M) of H3O+ in a 0.577 M solution of a triprotic weak acid, H3A, given t...

A: Here we have to determine the pH of 0.577M triprotic acid H3A . Given Ionization constants are Ka1= ...

Q: (c) Estimate the wavelength of electrons that have been accelerated from rest through a potential di...

A: An electron is a negatively charged particle.Wavelength can be defined as the distance from one cres...

Q: (a) Give the mechanism for the following regioselective allylation reaction. Answer the question wit...

A: NH3/Li is responsible for transferring one electron to reactant. This can also be said as hydride do...

Q: Re-order each list in the table below, if necessary, so that the atoms or ions in it are listed in o...

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