is a melting point alone sufficient to idenitfy a compound? why or why not?

Q: Ethyl chloride (C₂H₂Cl) can be used as a topical anesthetic, for example prior to giving a painful…

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Q: Consider the following choices when answering questions 86-89. b) c) P 808080 080808 808080 c.…

A: A question based on mixture of compounds. 5 pictures are given that are to be distinguished based on…

Q: The half-life of nickel-63 is 100.1 years. If there are 100 grams of nickel-63 present at a certain…

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Q: Determine the molarity of a solution formed by dissolving 72.8 g C6H12O6 in enough water to yield…

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Q: Part 2 out of 12 Choose the best option for the precursor to the epoxide intermediate. CH3 CH3CH₂O…

A: The three membered heterocyclic ring having oxygen as heteroatom is known as epoxide ring. The…

Q: Details Preparation of Dilute Table Solution Molarity of I₂ Standard Solution Molar Mass (g/mole)…

A: We are given the observation and calculation table of titration of ascorbic acid with iodine…

Q: (c) 2 [Mn²+ (aq) + 4H₂O(1) →MnO4 (aq) + 8 H(aq) + 5 e] :3+ 5 [HBiO3(aq) + 5 H(aq) + 2 e¯ → Bi³+ (aq)…

A: c) To determine ; atom reduced .

Q: (e) Br (1) Ph (9) Ph DH KOH-Bu, H-BUCH Br (Hint: This is an E2 reaction.) Br NaOEt, EtOH NaOMe, MeOH…

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

Q: Calculate the pH of a 0.58 M CH3CO2H solution

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Q: 0 acids: bases: other: 0 acids: bases: other:

A: The compound that can donate H+ ions in its solution is called an acid and the compound that accepts…

Q: When plutonium-239 is bombarded with a neutron, it produces zirconium-97, cesium-136, and releases 7…

A: To calculate the mass defect, we need to determine the total mass of the reactants and compare it to…

Q: In acetic acid/sodium acetate buffer the solute particles were Na+¹, C₂H3O2, and HC₂H3O2. With which…

A: A buffer is a solution or system that resists changes in pH when small amounts of acid or base are…

Q: Use this relation to calculate Keq for the following redox reaction that occurs in an…

A: Given reaction Cu2+(aq)+Zn(s)---> Cu(s)+Zn2+(aq)               ECu2+/Cu = 0.337 V…

Q: Calculate the volume (in mL) of 0.100 M CaCl₂ needed to produce 1.00 g of . There is an excess of…

A: Molarity of CaCl2 = 0.100 MMass of CaCO3 = 1.00 gMolar mass of CaCO3 = 100.09 g/mol

Q: What type of reaction is the following? Ca(OH)2 + HCI → CaCl₂ + H₂O

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Q: What is the mass of 5.00 moles of water, H-

A: Molar mass = mass of 1 mole of a substance

Q: Determine the heat of formation (AH) of ethanol (C₂H6O) given the heats of formation in your Useful…

A: The reaction given : Data used :

Q: The flow chart in figure 2.13 of your textbook summarizes how to convert from mass to moles to…

A: The conversion of quantity from one unit system to another unit system is known as unit conversion.…

Q: Give only typing answer with explanation and conclusion 1. Given the known heat of vaporization…

A: Experimentally determined ΔH = 41.55 kJ/mol = experimental valueAnd Known value of ΔH = 44.01 kJ/mol

Q: Two substances A and B have retention times of 16.40 and 17.63 min respectively on 30.0 cm column.…

A: Given,Retention times for A (tA)            = 16.40 minThe retention time for B (tB)        =  17.63…

Q: AB,r=kCA-K is to be carried out in a series of reactors with separation of unreacted B between…

A: Let initial concentration of A is CA0 at equilibrium the conversion of A is xAe.Concentration of A…

Q: Complete the following synthesis by selecting from the list of 14 reagents below. Each reagent (or…

A: Benzene can be converted into Nitro benzene by treatment with nitric acid and sulphuric…

Q: A closed system at 150 °C initially contained 10 g of NH4Cl(s) before reaching equilibrium. The…

A: Pure solids and liquids are not considered while writing the equilibrium constant expression.

Q: What is the pH of a 0.02 M HCl solution?

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Q: A prochirality center is a precursor to a chirality center. Identify the prochirality centers (if…

A: A question based on introduction to organic chemistry. Two reactants are given…

Q: 15.22 Polycyclic hydrocarbon derivatives are used as medication for viral infections. A com- pound…

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Q: What is the charge of the complex formed by a platinum (II) metal ion coordinated to two ammonia…

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Q: A 0.2500 g sample containing calcium carbonate spends 40.00 mL of a 1 M EDTA solution. Calculate the…

A: We must ascertain the volume of calcium carbonate (CaCO3) in the 0.2500 g sample and convert it to a…

Q: 1. Why is it recommended to have a carbon monoxide detector on each floor of a home?

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

Q: In Chemical Kinetics, Why is the reaction rate independent of the amount of Zn used in the…

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Q: At-14.4 °C the concentration equilibrium constant K, -9.3x10 for a certain reaction. Here are some…

A: If energy is released, reaction exothermicIf energy is absorbed, reaction is endothermicFor…

Q: In chemical kinetics, How does the activation energy of the catalyzed reaction compare with that of…

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Q: To determine the heat of reaction for the reaction: CO2 + 3H2 → CH4OH(g) + H2O(g) at a temperature…

A: To determine the heat of reaction at a specific temperature, we need to use the equation:ΔH = ΔH° +…

Q: 8. A buffer is prepared with 0.34 M chloroacetic acid (weak acid; CH₂CICO₂H) and 0.62 M sodium…

A: Given that, a buffer solution is made by 0.34 M of chloroacetic acid and 0.62 M of sodium…

Q: Answer each equation based on the questions below. Show your solution.  1. Cl2 + 2Kl ----> I2 +…

A: A question based on redox reaction. 3 questions are given that are to be distinguished based on the…

Q: 15.38 In research into the stereochemistry of nucleophilic reactions, the following reaction was…

A: We have find out the answer.

Q: For the substituted cyclohexane compound shown, identify the atoms that will sterically interact…

A: Only axial bonds are involved in 1,3-diaxial interaction.

Q: A gaseous mixture containing 0.15 M CO, 0.15 M H2, and 0.0035 M CH3OH, is placed in a 50.0-L vessel…

A: Reaction Quotient : The reaction quotient is defined as the ratio of the concentrations of product…

Q: 10. If a 50.0-mL sample of 0.250 M NaCN is titrated by 0.250 M HCI (strong acid), what is the pH of…

A: To determine the pH at the equivalence point of the titration between NaCN and HCl, we need to…

Q: In a 6.3M aqueous solution of benzoic acid (CH₂CO₂H), what is the percentage of benzoic acid that is…

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Q: CH3 CH3 BF3, H₂O

A: Polymerisation reaction followed by elecrtophile addition reaction.Please find the below…

Q: Draw all valid and reasonable resonance structures starting from the first structure shown. Circle…

A: Rules for determining the best resonance structures: 1. Neutral structure is more stable than the…

Q: 15) Determine the equilibrium concentrations of both Cu(NH3)4 2+ and Cu²+ in a solution made…

A: To determine the equilibrium concentrations of Cu(NH3)2+ and Cu²+ in the solution, we'll use the…

Q: make an aqueous solution of 0.137 M magnesium chloride for an experiment in lab, using a 250 mL…

A: we need to use the equation:Molarity (M) = moles of solute / volume of solution (L)Given: Molarity…

Q: Balance the chemical equation. CS₂ + NH3 H₂S+NH SCN Assume the coefficient of NH4 SCN is 1. What is…

A: A balanced chemical equation is a representation of a chemical reaction that includes the reactants…

Q: Consider the following electrochemical cell: Cd(s) | Cd2+ (aq) || Ce4+ (aq); Ce³+ (aq) | Pt(s) Which…

A: In voltaic cell, The metal electrode which has higher reduction potential acts as cathode and metal…

Q: For the Cell The electromative force 1qtm cd / cd (OH)2 ₁ / Nach (0.01 M)/Hz/pZ at 25 & equal Zero,…

A: Electromotive force at 25 0C = 0EMF force to electrode Cd/Cd+2 = 0.4 V

Q: 4. The protein in a 1.2846-g sample of an oat cereal is determined by the Kjeldahl procedure for…

A: Problem based on volumetric analysis in which the titration of sample and a solution bis involved.…

Q: For the equilibrium 21Br(g) 12(g) + Br2(g) Kc = 8.50 × 10³ at 150 °C. If 0.0600 mol of IBr is placed…

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Q: determine the heat of reaction for the reaction: CO2 + 3H2 → CH4OH(g) + H2O(g) at a temperature of…

A: To determine the heat of reaction for the given reaction at a temperature of 450°C, we can use the…

Crystal Structures

Solids are present all around us. They have different properties and applications. Diamond and graphite are two well-known solids. Diamond is the hardest material in the world and is used in making jewelry. Graphite on the other hand is soft. The lead of your pencil is graphite. Why are they so different in appearance and properties despite the fact they are chemically the same? Both are allotropes of carbon. The answer lies in the structure, the way constituent particles are arranged in the solids.