Which of the following needs greater quantity of heat for 1 kg of water? a. freezing it b. Freezing and evaporating water needs same quantity of heat c. increasing its temperature from zero to 100 degrees celsius d. evaporating it

Q: 3. Draw the mechanism for each reaction below; HO H, H CH,CH CH,CH,NH, HyC H. H (pH = 5) H. 1. Ph,P…

A: Note: As per company policy we are supposed to attempt first three subparts only. Please repost…

Q: Carbon disulfide is prepared by heating sulfur and charcoal. The chemical equation is S, (g)+C(s) =…

A: The reaction given is, => S2 (g) + C (s) ↔ CS2 (g)                            Kc = 9.40  Given:…

Q: The elementary reaction 2 H,O(g) = 2 H,(g) + 0,(g) proceeds at a certain temperature until the…

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Q: Aldehyde/Ketone → Alpha Beta unsaturated Ketone

A: Reaction 1 : α - bromination of ketones using acid and bromine. Reaction 2 : Elimination using py…

Q: At a certain temperature, the K, for the decomposition of H, S is 0.771. H, S(g) = H,(g)+S(g)…

A: The equilibrium reaction given is, => H2S (g) ↔ H2 (g) + S (g)…

Q: How many grams would a 18.615 mole sample of a substance weigh if its molar mass was 399.76 grams…

A: Formula to calculate mole:- Mole = mass ÷ molar mass

Q: What is the molar mass of a compound that has 7 atoms of an element with molar mass 20.63 and 18…

A: 1 mole = 6.022×1023 (Avogadro's number)  The mass of 1 mole of molecules of a substance is called…

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Q: The law of thermodynamics states that every spontaneous process moves towards greater entropy. O…

A: The second law of thermodynamics helps us to predict whether the reaction is fisible or not .…

Q: 2. What is the mass ie of a piece of magnesium wire that produces 40.2 ml of hydrogen gas collected…

A: The reaction of Mg with water is as:-  Mg(s) + H2 O (l) ----> MgO(s) + H2(g)

Q: For the reaction 2 H, O(g) = 2 H, (g) + O,(g) the equilibrium concentrations were found to be [H,0]…

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Q: For the chemical equation SO,(g) + NO,(g) = SO;(g)+NO(g) the equilibrium constant at a certain…

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Q: is an event that occurs in aquatic ecosystems as dissolved oxygen (DO) becomes reduced to a point…

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Q: Chemistry help asap!

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Q: Calculate the mass percent (%) of iodine in solution, if 3 g of iodine were added to a 97 g of…

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Q: The measured cell potential, Ecel, for the cell shown is –0.3573 V at 25 °C. Calculate the H…

A: Standard Emf of the cell is calculated as shown below: E°cell = E°cathode - E°anode

Q: This structure will form when a hydroxyl group form a bond with a carbonyl group. a.Aldehyde…

A: Organic compounds having -HC=O functional group are called aldehydes  Organic compounds having -OH…

Q: : does the stable anti-conformer of CH2CI shows an equivalency of CH3 H's? Why?

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Q: Calculate the total amount of energy in units of kJ for 0.345 moles of 567 nm photons.

A: Given - - > Wavelength, λ = 567 nm = 5.67 x 10-7 m Number of moles, n= 0.345 mol speed, c = 3 x…

Q: Using a cyanohydrin, convert benzyl alcohol into the alpha hydroxy acid. bs OH witnve latort n obe…

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

Q: stand the least stable conformation of ti CHs

A: In (b), two methyl groups as far apart asa possible so it is more stable. And (a) is least stable…

Q: In an exothermic chemical reaction O heat is released as the reaction proceeds. O the mass of the…

A: Enthalpy of reaction is as- ∆H°rxn = H(product) - H(reactant)  When H(product) < H(reactant)…

Q: 10.00 mL of a solution of NaOH was titrated with with 0.09546 M KHP solution. At the equivalence…

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Q: (Q54) Nickel iodate, Ni(IO3)2 is being precipitated out of a 1.00 L solution. If the concentration…

A: Given that,  Nickel iodate, Ni(IO3)2 is precipitated Concentration of disdolved Ni2+ ion , [Ni2+] =…

Q: (b) Zn(NO3)2(aq) + 2 N2OH(aq) → Zn(OH)2(s) + 2 NaNO3(aq) Write the complete ionic equation. (Include…

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Q: 2. A sample of neon gas at 760 torr has a volume of 5.0 L and a temperature of 17°C. What is the new…

A: 2.  Given :  Initial volume = 5.0 L  Initial temperature = 17°C  Final temperature = 47°C  Pressure…

Q: Which of the following processes would be accompanied by a decrease in entropy? O H20(1, 50°C) –→…

A: given :-  H2O (l,50°C) →  H2O (l,75°C) H2O (s) →  H2O (l) H2O (g) →  H2O (s) H2O  (l) →  H2O (g) H2O…

Q: At 850 K, the equilibrium constant for the reaction 2 SO, (g) + 0,(g) 2SO;(g) is Ke toward…

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Q: (Q57) What is the molar solubility of strontium fluoride in a solution that is also 0.0847 M in…

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Q: is a weak electrolyte; and scandium(II1) sulfate, Scy(SO4)3, is a strong electrolyte. What are the…

A: A strong electrolyte completely dissociates, a weak electrolyte partially dissociates while an…

Q: How many moles is 4.22x1025 particles? O 7.01 582 O 3.06 70.1 3.06x1048 O 5.82

A: Given that, Number of particles = 4.22×1025 particles number of moles = ?

Q: Which of the oxidation numbers below is not utilized for sulfur in the following molecules/ions:…

A: The oxidation state of S in Na2S is -2 SO42- is +6 S8 is 0 SBr2 is +2 K2SO3 is +4

Q: e solubility of this salt

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Q: A gold bar is 54.0cm long at 6.0°C. How much would the length increase if it was heated to a final…

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Q: s its final temperature if

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Q: At 10°C, the vapour pressure of a liquid substance is 6.83 x 102 Pa. At 30°C, the vapour pressure is…

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Q: 24 20.0 mL of a 0.100 M butanoic acid solution is titrated with a 0.250 M solution of Ba(OH)2…

A: 1.) In this base is added to a weak acid ( butanoic acid ) , so we would calculate moles of acid and…

Q: Calculate the change in pH when 69.0 mL of a 0.660 M solution of NaOH is added to 1.00 L of a…

A: Given- Volume of NaOH = 69.0 ml = 0.0690 L (1L = 1000 ml) Molarity of NaOH = 0.660 M Volume of…

Q: 5. (a) A galvanic cell consisting of a Cd electrode dipping into a 1.0 M CdCl2 solution and a Pt…

A: Given that,  The oxidation half cell reaction is: Cd → Cd2+ + 2e-. The reduction half-cell reaction…

Q: Natural gas burns in air to form carbon dioxide and water, releasing heat. CH4(g) + O2(g) → CO2(g)…

A: Given : Mass ( m ) = 23 gram Temperature (∆T) = 32°C   Find mass of CH4 = ??

Q: Using this data table classify each of the following sustances tested as either reducing sugar or…

A: Urine normally does not contain any sugar. Diabetic urine contains glucose.

Q: What is the heat capacity of ethene and carbon dioxide. In details explain the answer (drawings is…

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Q: product of your oxymecuration-demercuration reaction solubl why not?

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Q: A patient in hospital takes digoxin at a dose of 125 micrograms daily.  He is currently not able to…

A: given :-  amount of digoxin required daily = 125 micrograms  available concentration of solution =…

Q: If 0.143 moles of NaCl were dissolved in a 250.0ml solution, what is the concentration of the NaCl…

A: Given :-  No.of moles of NaCl in solution = 0.143 mol  Volume of solution = 250.0 mL  To determine…

Q: ST6D.3 - Given one billion collisions, how many collisions have sufficient energy to cause a…

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Q: Predict which substance has greater molar entropy. Explain. (a) CH4(g) or CCl4(l) (b) NO2(g) or…

A: Comparison of molar entropies for different compounds

Q: The change in enthalpy (AH) for a reaction is 34.4 kJ/mol. The equilbrium constant for the reaction…

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Q: Predict the major and minor products for the following reaction. OTS ? NaOE

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