Which of the following equations is TRUE about combustion in the context of first law of thermodynamics?    A. In this case of combustion, the reactants are lower in energy and so that energy is transferred to the surroundings   B. In this case of combustion, the products are lower in energy and so that energy is transferred to the surroundings   C. In this case of combustion, the products are higher in energy and so that energy is transferred to the surroundings   D. In this case of combustion, the reactants are higher in energy and so that energy is transferred to the surroundings

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Q: What should be left in the locker before entering the laboratory? O a. all of the above O b. cellpho...

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Q: A. What is the acid/base ratio? Why is it important in the titrimetric process? B. Why should you bo...

A: a. Answer - According to the question - acid base ratio - We know that for perfect neutralization, a...

Q: For the diprotic weak acid H2A, Kal = 3.8 × 10-6 and K2 = 7.8 x 10-9. What is the pH of a 0.0750 M s...

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Q: The XeO3 molecule displays approximately which bond angles (in degrees)about the central Xe? VSEPR ...

A: The central atom in XeO3 is Xenon(Xe). Xe has the electronic configuration as [Kr]4d105s25p6 The val...

Q: Enough of a monoprotic acid is dissolved in water to produce a 1.55 M solution. The pH of the result...

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Q: (30) Take a look at the two multi-substituted benzene compounds below. Trinitrotoluene (TNT) has its...

A: The name of the compound when a methyl group is attached with the benzene is toluene.

Q: Ethics/ Positive of a pharmaectical industry doing own research

A: A good reasearch involves systematic planning and setting time based realistic objectives. It built ...

Q: Metal tongs are used to hold Mg(s) in the flame of a bunsen burner. The Mg(s) changes to a powdery w...

A: Here, it is given that when Mg(s) is burned in a bunsen burner, a powdery white substance is formed....

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Q: Chemistry Arrange the following reactions in order of increasing DSrxn values--without any data ...

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Q: 2. Provide mechanistic explanations for the following observations (a) HCI CI (b) CI HCI

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Q: Consider a hypothetical ionic compound AB (comprised of A+ and B- ions). Given the following enthal...

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Q: Balance the following redox reactions in basic solution: a. Se + Cr(OH)3 -> Cr + SeO32- b. MnO4- + ...

A: To solve this problem we will have to balanced the given chemical equation .   

Q: A particular reaction has a ΔHo value of -141. kJ and ΔSo of -104. J/mol K at 298 K. Calculate ΔGo a...

A: We are given :648. K Change in enthalpy (ΔHo)  =   -141. kJ change in entropy (ΔSo)  = -104. J/ K = ...

Q: work

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Q: The reaction 2A B is second order with a rate constant of 51.0/M min at 24°C. (a) Starting with [A]o...

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Q: A ground-state H atom absorbs a photon of wavelength 97.25 nm. What higher energy level did the elec...

A: We need to calculate the value of the higher energy level for the transition with wavelength 97.25 n...

Q: The 'H signal of alcoholic OH may be broad due to hydrogen bonding interactions. True False

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Q: * 00 $寸 An electron microscope focuses electrons through magnetic lenses to observe objects at highe...

A: We have find out wavelength.

Q: Balance the following redox reactions in acidic solution: a. MnO4- + H2S -> Mn2+ + S8 b. Cu + SO42...

A: Here we have to balance the following redox reaction in acidic medium.     Here the redox reaction ...

Q: The lon-product constant for water at a5C is 3.02x10 (a) What is the concentration of Hy0 ions at th...

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Q: What are the concentrations of OH¯ and H† in a 0.00060 M solution of Ba(OH), at 25 °C? Assume comple...

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Q: A.Consider the element Zinc (Zn): Write its electronic configuration Write its shorthand configurat...

A: A) Zinc atom belongs to d-block elements. Atomic number of Zn= 30 Before filling of electrons energy...

Q: How many grams of NaOH will you need to add to 5.0 mL of deionized water to obtain a 3.0 M solution

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Q: Mixtures can be quantified using UV-Vis spectroscopy. True False

A: THIS CAN BE DONE BY SELECTIVE ELIMANITION

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Q: In the presence of sulfuric acid, this alcohol is dehydrated to form a pair of alkenes through an E1...

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Q: An endothermic reaction which results in an increase in moles of gas will be most product-favored un...

A: Le Chatelier's principle: This principle is used to predict the effect of a change in conditions on ...

Q: What is ΔSsys for a freezing phase transition at 4.9 °C for a compound that freezes at 4.9 °C and th...

A: Given - - > Temperature (T) = 4.9 °C = (4.9+273.15) = 278.05 K ΔHsys = - 18.21 kJ mol-1  

Q: Which one of the following compounds would adsorb most strongly to silica gel? SCH3 Br CO2H A B E

A: compound that would adsorb most strongly to silica gel is given below

Q: 2. Explain why highly concentrated preservatives/chemicals in foods or drinks can be deadly of 15 me...

A: As per bartleby guidelines I answered only first question so please don't mind.Thanks in advance. 

Q: (1) L(g)=21(g) k- (fast, equilibrium) k2 (2) I(g) +H,(g) HI(g) + H(g) (slow) k3 (3) H(g) + I(g): HI(...

A: The reaction described by H2 (g) + I2 (g) ---> 2HI(g)

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Q: complete overall reaction when taking KAuCl4 in methanol mixed with 2-phenyl-1,10-phenanthroline in ...

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Q: 14.8 g sample of an aqueous solution of hydrobromic acid contains an unknown amount of the acid. If ...

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Q: Draw a plausible mechanism for the reaction shown below. Et Me OH "Me 1) Excess EtMgBr 2) H20 'CI Et

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Q: What is the advantage of the adding a Lag controller for the SS model?

A:  Lag controller give a high gain at  a low frequency thus performing the function of a low pass filt...

Q: A reaction has an equilibrium constant of 1.8 x 10⁻² at 298 K and an enthalpy change of +200 kJ/mol....

A: Given,  At temperature T1 = 298 K  Equilibrium constant, K1 = 1.8x10-2  ∆Hrxn = 200 kJ/mol          ...

Q: How many grams of NaOH will you need to add to 5.0 mL of deionized water to obtain a 3.0 M solution?

A: Given that, Molarity of NaOH= 3.0 M volume= 5.0 ml = 0.005 L molar mass of NaOH= 40 g mol-1 mass of ...

Q: Show how you would accomplish the following synthetic transformations. Show all reagents and interme...

A: We have to do conversions.

Q: Often used as an indicator in acid-base titrations. O bromocresol green O bromothymol blue O methyl ...

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Q: How many reactive sites are there in NADP+? 2 4. O 5 1 3

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Q: At 1120 K, AG° = 54.9 kJ/mol for the reaction 3 A (g) + B (g) →2 C (g). If the partial pressures of ...

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