1.) The molar heat of combustion of octane to form carbon dioxide and water vapour is ─5470.1kJ/mol. Using this value, determine the mass of octane required to increase the temperature of 1.50 L of water from 22.0°C to 85.6°C. 2.) A simple calorimeter is filled with 250g of water initially at 25.0°C. A mass of 0.500g of benzene is completely burned to heat the water in the calorimeter. The highest temperature of the calorimeter water is measured at 44.0°C. What is the experimental value of the molar enthalpy of combustion of benzene?

Q: Consider a solution that is made from mixing 0.053 moles of A* and 0.085 moles of B in 125.0mL of…

A: Answer:- This question is answered by using the simple concept of calculation of equilibrium…

Q: 4) If you were to have a graph of a 23.5 mL of a weak acid (HA) is titrated with a strong base 0.20M…

A: The question is based on the titrations.  we are titrating a weak acid with a strong base. we need…

Q: drawn structure of the compounds 1- 8 Photo Panel # 1 2 3 4 5 6 7 8 Compound Name 2-pentyne Decane…

A:

Q: Specify the hybridization at the atoms labelled a-d. For each atom enter one of the following: sp3,…

A:

Q: Provide the formal charges for each atom in the molecule below, and answer the additional question…

A:

Q: A patient receives all her nutrition from fluids given through the vena cava. Every 12 hours, 500 mL…

A: Given,The dosage of all nutritions from fluids for every 12 hours, 500 mL of  solution that is 5.0 %…

Q: سلہ cat. H'A

A:

Q: Be sure to answer all parts. Draw the product of the Lewis acid-base reaction. Label the…

A: In the reaction between CH3CH2OH and BF3 is an acid base reaction. The CH3CH2OH is behaves as…

Q: An atom of helium has a radius He = 31. pm and an average speed in the gas phase at 25°C of 787.m/s.…

A: According to Heisenberg uncertainty principle, position (x) and momentum of any microscopic particle…

Q: Thought questions to help you with the selective precipitation related questions (don't spend too…

A: In chemical reaction, the equilibrium is the state in which the concentration of the reactant and…

Q: A) 80.7% B) 90.1% Q6: What is the molar mass of an Ideal gas if a 0.722g sample of this gas occupies…

A: Note: here i am answering question number 6 as you have asked. mass of the sample (m) = 0.722 g…

Q: A chemist prepares a solution of iron(II) bromide (FeBr₂) by measuring out 290. g of iron(II)…

A:

Q: The diameter of an iridium-191 nuclide is 9.2 femtometers (9.2 x 10-15 m). Using the estimate that…

A: Detail

Q: Complete the following table. Round each of your answers to 3 significant digits. a corn muffin food…

A: Conversion formulae are:  1 Kcal = 103 cal  1 cal = 4.184 J  1 KJ = 103 J

Q: (a) Propene reacts with a mixture of bromine and water to give the product shown below as the major…

A: The addition bromine and water to alkene produces a product called as halohydrine. This compound…

Q: Determine the values of reaction orders, m, and n.

A: The order of the reaction in clock reaction always depends on the concentration of thiosulfate…

Q: 1. A 50.00 mL stock CaCl2 solution was diluted with water in a 250.0-mL volumetric flask. A 25.00 mL…

A: Two questions individually based on concentration terms that are to be answered based on the…

Q: Define a. Digestion b. Reprecipitation c. Precipitation from homogeneous solution

A: Precipitation- precipitation is defined as the process which forms an insoluble compound either by…

Q: 0 0 0 0 H H Choose... Choose...

A: a chemical reaction wherein two or more reactants come together to form a larger single product.

Q: 37. What is the pH of a solution with hydrogen ion concentration of 1 x 10-25 M? 38. What is the pH…

A: Different solutions with different H+ concentration .

Q: Draw the major organic product(s) for the following Friedel-Crafts acylation reaction: CH,CH,CH,COCI…

A: Toluene on reaction with acyl chloride in the presence of Lewis acid form ortho/para substituted…

Q: Choose the best Lewis structure for CH2Cl2. (Hint: Best means showing all the valence electrons and…

A: We have to choose the best Lewis structure of CH2Cl2. The given options are

Q: Name the following molecule using IUPAC nomenclature (aka systematic naming). HO ngh

A: Here a structure of an organic molecule is given.We have to write down the IUPAC name of that given…

Q: Calculate the molar concentration of a 20.0% solution (w/w) of KCl that has a specific gravity of…

A: Density= Mass/volume  Specific gravity= density of substance/density of water

Q: Fill in the missing information about the atoms in the table below. symbol Se Po O number of protons…

A: Given,The atoms:    Se , Po and O

Q: Given the standard enthalpies of formation for the following substances, determine the change in…

A:

Q: 2 H₂O Bond Bond total bond energy for the reactants in the energy (kJ/mol) Average Bond Energies…

A: The reaction :  C2H4  + 3O2   →2CO2 +2H2O  H2-C=C-H2  +3O=O →2O=C=O +2 H-O-H

Q: In a TLC analysis, if the Rf's of the spots are too high, a development solvent of higher polarity…

A: The Rf (retention factor) value in TLC (Thin Layer Chromatography) analysis is the ratio of the…

Q: Using Charles's Law: A 37.5 L volume of methane gas is heated from 22°C to 72°C at constant…

A: Charles's law: According to the Charles law the volume of the gas is directly proportional to the…

Q: 29. Which one of the following gives only a single allylic bromide on heating with NBS in carbon…

A: A question based on reactions of alkene. 4 different alkene reactions are given that are to be…

Q: Unit 3: Chemical Quantities PERFORMANCE TASK 5. A student conducts a laboratory investigation of…

A: The number of moles of carbon dioxide is calculated by using the formula of ideal gas equation. The…

Q: An atomic cation with a charge of +2 has the following electron configuration: 1s²2s²2p 3s²3p4 What…

A: Given, The electron configuration of an unknown atomic cation with a charge of +2 is:…

Q: Consider the three atomic orbitals shown in the image below: a) What is the maximum number of…

A: “Since you have posted a question with multiple sub-parts, we will solve first three sub￾parts for…

Q: 2 NH3 (8) 37. N2(g) + 3H₂(g) For this reaction, if increase the pressure, which direction will the…

A: According to Le chateliers principle, when we disturb the equilibrium of reaction by known manner,…

Q: A particular reactant decomposes with a half-life of 105 s when its initial concentration is 0.272…

A:

Q: Indicate the half-reaction occurring at the cathode. Express your answer as a chemical equation.…

A: Oxidation: It involve increase in the oxidation number Reduction: It involve decrease in the…

Q: The following Lewis diagram represents the valence electron configuration of a main-group element.…

A: Electrons are filled in a different atomic orbital in an atom. According to the Aufbau rule, the…

Q: a Write the structural formula for the product of each reaction. H₂SO4 + HNO3 • Draw organic…

A: benzene is an important electrophilic aromatic substitution reaction that is widely used in the…

Q: Place the following four species in order of increasing boiling point. increasing boiling point Drag…

A: To place the four species in order of increasing boiling point, we consider the strength of…

Q: An anesthetic consists of a mixture of cyclopropane gas, C3H6, and oxygen gas, O₂. If the mixture…

A: Total pressure of mixture (PT) = 1.10 atm Partial pressure of cyclopropane (Pcyclopropane) = 76.0…

Q: Determine the ΔG at 298 K for the formation of ozone (O3) from oxygen if the partial pressure of…

A: The given balanced chemical reaction is O2(g) + O(g) ↔  O3(g) Given data: the partial pressure of…

Q: For number 11: If 185 g of methanol are used up in a combustion process, what is the mass of H2O…

A: A balanced chemical equation contain equal number of atoms of each elements on both sides of the…

Q: CID THAT DON'T ARE WEAK ACID 44. 10.00 ml of HC was neutralized by 20.00 ml of 0.1000 M NaOH. What…

A:

Q: 45. A buffer a) Resists change in temperature when small amounts of acid or base are added. b)…

A: 45) A buffer solution is a solution that resist a change in pH even after upon the addition of a…

Q: Concentration, M 1 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0 50 100 150 Time, s 200 250 Calculate the average…

A: Introduction The instantaneous rate refers to the rate of change of a quantity at a specific moment…

Q: Consider the titration of a 40.0 mL of 0.153 M weak acid HA (Ka = 2.7 x 10-³) with 0.100 M LIOH.…

A: we have to calculate the pH of the solution

Q: Using the Nernst equation, calculate the total potential for the following cells: Cu²+ + (aq) (0.100…

A:

Q: d. e. OH NaOCI, CH3COOH CH3CH₂ONa Acetone

A: We have to draw products of below reactions -

Q: 2. Explain why the following Williamson ether synthesis will not work. 1) NaH 2) Br- OH X Propose an…

A: During the Williamson ether synthesis an alcohol is treated with base to form alkoxide and then this…

Q: 25 mL of hydroiodic acid generates 1.20 L of H2 gas at STP conditions when combined with excess…

A: Data