What is the mass of a piece of iron that releases 239.18 joules of heat as it cools from 93.13 degrees Celsius to 8.72 degrees Celsius? The specific heat of iron is 0.450 J/gC; please answer to two digits after the decimal point.

Q: Ethyl acetate (C4H8O2, mm=D 88.10 g/mol) is a colorless liquid often used in nail polish removers,…

A: ∆H°vap of ethyl acetate is 31.94 kJ/mol. Kb for ethyl acetate is 2.77 °C kg/mol. It is required to…

Q: Is the size of chlorine smaller or larger than fluorine? Justify your answer.

A: Given, size comparison between chlorine and fluorine.

Q: What is the total number of moles (r) of electrons exchanged between the oxidizing agent and the…

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Q: Radioactive decay is typically second order. True or False. Why? Specify equations, if any.

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Q: How many mL of 10.7 M HCIaq) are required to make 250.0 ml of 6.00 M HCI(aq) solution? Enter only a…

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Q: Consider the following alkyl iodides and identify the most reactive and the least reactive compound…

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

Q: = -0.763 V) immersed in Calculate the potential of a zinc electrode (E+ /Zn a 0.0130 M in 2+ Zn…

A: To calculate the potential of Zn electrode.

Q: Consider the reaction of methyl chloride (CH3CI) with NaN3 (nucleophile). What is the effect of…

A: Which one of the following is correct

Q: Which of the following reagents are suitable for reducing an amide to an aldehyde? Il…

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Q: H2SO4 + 2 KOH→ 2H2O + K2SO4; A) Determine the moles of KOH needed to react with 5.5 moles of H2SO4.…

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Q: Quéstion 8 Find the AH (in kJ) for the reaction below, given the following reactions and subsequent…

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Q: enthaipy of fomation of pneno enthaipy formation of pienoi gaseous Carb -393.51 kJ mol1 2C6H5OH +…

A: Given-> 2C6H5OH +15O2 -----> 12CO2 + 6H2O I think it asked standard enthalpy of given…

Q: T Write out the mechanism for the following reaction. Show all steps and use 1. curved arrows. H20 +…

A: Given,

Q: Using the table of the weak base below, you have chosen Methylamine as your weak base in the buffer…

A: Given: Concentration of salt = 0.48 M pH = 9.75 Kb of methylamine = 4.38×10-4

Q: Formula Name Ionic or Covalent? Magnesium iodide Al203 K25 Tetrasulfur tetranitride PCI3 Iron (III)…

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Q: Which reaction is predicted to be faster (A or B)? Reactions A and B are of the same type. Classify…

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Q: Make your own energy diagram for an exothermic reaction that does not include a catalyst and one…

A: For exothermic reaction , energy of products is lower than energy of reactants. So we would make…

Q: Arrange the following ions in order of increasing ionic radii: ( Ca2+, K+, Al3+)(. Your  answer…

A: Cation are smaller than their parent atoms     ionic radius decrease along left to right in period…

Q: What is the mass of a piece of iron that releases 396.40 joules of heat as it cools from 64.28…

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Q: I love you, Bartleby. Thank you for saving my life and career. I've learned so much!

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Q: Use the space provided below to draw a flow chart showing how you could separate a mixture…

A: The flow chart for the extraction of given compounds has been shown below:

Q: Consider the following chemical reaction: Na2Cr2O7(aq) + BaCl2(aq) ---------------> NaCl(aq) +…

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Q: Question 6 of 12 A solid 30.2 cm block of KCIO: is heated in the laboratory and decomposes according…

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Q: (a) 250 mL of a 3.6% w/v solution of NaCl in water (b) 625 mL of a 4.9% w/v solution of glycine,…

A: % w/v concentration of the solution = [mass of the solute in g/ volume of the solution] x 100

Q: 15. How much water (in mL) must be added to 200 mL of a 1.25 M soldium chloride (NaCl) solution to…

A: 15. For dilution we use C1V1 = C2V2  C1 = initial concentration  V1 = initial volume  C2 = final…

Q: The highly exothermic thermite reaction, in which aluminum reduces iron(III) oxide to elemental…

A: The given balanced thermochemical equation is 2Al(s) + Fe2O3(s) → 2Fe(s) + Al2O3(s), ΔH = -850 KJ…

Q: H2 and Ci2 are mixed together, initially without any product, HCI. The system is monitored over time…

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Q: Consider the following chemical reaction: AgNO3 (aq) + K2CrO4 (aq) -----------> Ag2CrO4(s) +…

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Q: Make an Introduction about the reaction of Al + CuSO4 | Aluminum + Copper (II) Sulfate

A: Al + CuSO4----->

Q: Ag2S→2Ag + S; A) Determine the moles of Ag2S needed when 25 moles of Ag are produced. B) Determine…

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Q: Using the data in the table, calculate the rate constant of Trial [A] (M) [B] (M) Rate (M/s) this…

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Q: What is the percent by mass of oxygen in Al 2(SO 3) 3? (At. mass: Al=26.98; S=32.07;O=16.00) 10 3404

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Q: What is the value of the equilibrium constant for the reaction between Al(s) and Cd²+(aq) at 25°C?…

A: Al(s) + Cd2+(aq) ---->  At anode (oxidation) -> Al(s) ----> Al3+(aq) + 3e At cathode…

Q: Question 22 In which of the following compounds are all of the carbon atoms in the same plane? a)…

A: Given, Which of the following compound are planar ( all the carbon atom in the same plane).

Q: Which of the following polymers has a syndiotactic structure? A B D

A: On the basis of the stereochemistry the polymers are of three types: Isotactic polymer: In these…

Q: The following reaction is endothermic: 30,g)= 20,g) If the reaction is at equilibrium, tell whether…

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Q: Determine AG for the reaction: 2C0(g) + 2H2(g)→ CO2(g) + CH4(g) AH = -247.3 kJ/mol ASO = -256.5…

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Q: N2+ 3H 2 → 2NH 3 How many grams of nitrogen are needed to produce 300 grams of ammonia? O a. 247 O…

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Q: What volume would a 0.250 mole sample of H2 gas occupy, if it had a pressure of 1.70 atm, and a…

A: Detail mathematical calculation is shown below

Q: Amides are synthesized from two classes of organic compounds. Those two types of compounds are…

A: Amides are synthesized from two classes 0f organic compounds which are shown in image format.

Q: The figure below shows a fractional composition diagram of one of the acids on the attached page of…

A: Since you have asked multiple questions we will answer the first one for you. To get the remaining…

Q: Calculate the change in pH when 41.0 mL of a 0.500 M so acetate and 1.00 M in acetic acid. 4.798

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Q: Question 31 Give the correct IUPAC name for the following compound..

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Q: CH, CH, Br CI CH;- El CI CH, CH, (3) ČI (1) (2) CH3 CH, CH,Br CH CH CH CH CH, CH, CH, (4) (5) (6)…

A: We have seven molecules. If compounds posses internal plane of symmetry, then it is said to be meso…

Q: For the given molecule, determine the number of T (pi) bonds H. :0: H Н-С—С—С-С—С—С H H H

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Q: A reaction must be nonspontaneous at all temperatures when Select one: О а. AH is negative and AS is…

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Q: 9. What happens when oxygen is added to an equilibrium mixture of this reaction? 4NH3(9) +302(g) →…

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Q: The maximum concentration of polychlorinated biphenyls (PCBs) in drinking water that is allowed by…

A: The ppb concentration is the ratio between mass of solute to the solution volume, and final value…

Q: Given the following list of lonization Energies for an unknown element, how many valence electrons…

A: Ionization energy is the energy required to remove electron from valance shell of an atom . If the…

Q: Write the equilibrium expression for this reaction: HNO,(aq) + H,O() H,0 (aq) + NO, (aq)

A: Equilibrium constant is the ratio of product of concentration of products raised to their…