Purpose: What is the mass of precipitate formed when 3.43g of barium hydroxide in solution reacts with an excess of sulphuric acid? Hypothesis: Calculate the theoretical yield of barium sulphate Evidence: • A white precipitate formed when the barium hydroxide solution was mixed with the sulphuric acid. • Mass of filter paper = 0.96 g• Mass of filter paper and precipitate = 5.25 g Analysis: What is the mass of precipitate formed when 3.43g of barium hydroxide in solution reacts with an excess of sulphuric acid? Evaluation: What is the percentage yield of this reaction?     What's your hypothesis, analysis, and evaluation sections?

Q: H₂N´ Edit Drawing CH3 Edit Drawing OH NH H2O, H₂SO4 (cat.) OCH3 (1) CH3CH2MgBr (excess) (2) H3O+

A: Cyclic amode also known as lactam .on hydrolysis it breaks to acid and amine group.

Q: Find the pH of 0.250 M hydrobromic acid, HBr, solution at 25o Show your work.

A: The negative of the logarithm of H+ ion concentration was defined as pH.pH = - log [H+]

Q: An SF6 molecule has I = 3.07 x 10-45 kg m2. What is the minimum energy needed to start rotation?

A: ll

Q: Draw the possible 1,2- and 1,4-addition products formed when this diene reacts with Br2. Do not…

A: 1,2 addition product formed at low temperature ,also know as  kinetic product .1,4 addition products…

Q: Calculating the pH of a weak base titrated with a strong acid Izabella An analytical chemist is…

A: The question is based on the concept of the pH of the solution.It is defined as a negative logarithm…

Q: ) Calculate the wavelength of radiation emitted when an electron in a hydrogen atom moves from the n…

A: The objective of this question is to calculate the wavelength of radiation emitted when an electron…

Q: what is the answer by drowning the structure

A: The product obtained from transformation (a) and the intermediate compound obtained from…

Q: 13. Provide detailed mechanisms for one of the following reactions H3CO. ① OH H3CO H2SO4 + H₂O OR

A: An arrow always depicts from a region of high electron density to low electron density ; that is…

Q: Which answer best describes the transfer of heat that occurs when 1.71 mol H, reacts with 0.814 mol…

A: Moles of H2 = 1.71 mol Moles of O2 = 0.814 mol Transfer of heat =?

Q: ********* H H H OH

A: Given,The molecule is:

Q: When 2,2-dimethylcyclohexanol is treated with acid, 1,2-dimethylcyclohexene and iso-…

A: The given reaction is an acid-catalyzed dehydration of 2, 2-dimethylcyclohexanol.Explanation:Step…

Q: don't know Which of the following, when reacted with HCl, would result in the formation of the same…

A: Conjugated dienes on reaction with strong acids like HCl can give two possible products, 1,2-…

Q: Draw the structure of the major organic product(s) of the reaction. Хуа 1. LiAlH4, ether 2. H3O+

A: Lithium Aluminium Hydride (LAH) is versatile reducing agent used for the reduction of functional…

Q: Question 4 Using the priority rule, identify the configuration at each chiral center highlighted in…

A: We have to predict the configuration of the located Carbon atoms.

Q: Give the IUPAC name for each compound. Part 1 of 4

A: The IUPAC name of the compound can be written on the basis of the number of carbon atoms in the main…

Q: Give the name of the branched alkyl group attached to each of C4 alkyl groups, for example…

A: To name the branched alkyl group attached 1)Identify the longest chain of side chain2)Number the…

Q: Question 4. Predict the most likely site of electrophilic aromatic substitution in each compound…

A: The electron density at the aromatic ring determines the rate at which the electrophilic aromatic…

Q: Show all significant resonance contributors and a resonance hybrid for the following molecule.

A: When all the properties of a molecule cannot be explained by a single structure, we draw more than…

Q: What is the molar mass of a compound with the formula M202 where M has an atomic mass 77.53?

A: Answer:Molar mass of a compound is the sum of the gram atomic masses of all the atoms present in the…

Q: Question 1 Draw Zaitsev and Hofmann products that are expected when each of the following compounds…

A: An arrow always depicts from a region of high electron density to low electron density ; that is…

Q: acid strong or weak? species present at 10-6 mol/L or greater when dissolved in water 0.0.... HCIO…

A: Answer:When added in water weak acid dissociates partially and an equilibrium exists between its…

Q: Rank the relative rates of the alkyl halides in an SN 1 reaction. CH3 Fastest SN 1 reaction Slowest…

A: SN1 reaction means unimolecular nucleophilic substitution reaction. The reaction proceeds in two…

Q: Draw major E2 ELIMINATION product. Hint: Review Chapter 10.3, the elimination can only occur if the…

A:

Q: :Which of the following are Enantiomers

A: The molecules with the same molecular formula but different structures are known as isomers. If the…

Q: Calculate the minimum excitation energy (i.e. the difference in energy between the ground state and…

A: The solution to the given problem is attached below. For further doubts, please comment…

Q: Which of the following dienophiles would be the LEAST reactive in a Diels- Alder cycloaddition?

A:

Q: 3. Copy the five sets of data (volume NaOH and pH) from titration #3 into the table on the next…

A: The objective of the question is to calculate the pKa of an unknown weak acid using the…

Q: Draw the appropriate Newman projection which leads to the major E2 ELIMINATION product.

A: For an elimination to occur via E2, the beta H and the leaving group must be antiperiplanar to each…

Q: Answer 7a

A: Solution Explanation:Step 1: Step 2: Step 3: Step 4:

Q: What is the degeneracy of a molecule rotating with 1 = 3? With 1=4?

A: Conclusion :  The degeneracy of a molecule rotating with I=3 is 7 and with I=4 is 9 Explanation:Step…

Q: Question 3 Identify the correct Newman projection for each conformation of the compound below: Hint:…

A: To find out the most stable conformation of the given substituted cyclohexane first we shall draw…

Q: show the arrow pushing mechanism and predict the product for the bak - catalyzed hydrolysis of a…

A: An arrow always depicts from a region of high electron density to low electron density ; that is…

Q: Complete the mechanism for the deprotonation of the α carbon.

A: The mechanism of a reaction is the step-by-step pathway by which the reactant is converted to the…

Q: The pH of an acid solution is 5.44. Calculate the K for the monoprotic a acid. The initial acid…

A: Given,Initial, the molarity of monoprotic acid = 0.010 MpH of an acid solution = 5.44

Q: Methanoic acid (HMeth) has a Ka of 1.78 * 10-6, so what is the pOH of a 0.23 M NaMethsolution?

A: The objective of this question is to calculate the pOH of a 0.23 M NaMeth solution, given that the…

Q: Synthesis this please. Include reagents that could work and intermediate compound. N

A: The question is based on the concept of organic synthesis.We need to synthesize the product using…

Q: QUESTION 6 Identify the salts that will not hydrolyze water. The solution will be neutral. NaCl NH41…

A: Answer:Salts of strong acid and strong base doesn't get hydrolyzed in water. So, in this problem we…

Q: The following reaction would yield: CH₂CH H&C H&C CH₂OH Oa. An optically active product Ob. No…

A: Product of following reaction can be made by applying appropriate reaction mechanism.

Q: Predict the products of this organic reaction: + H2O + HCI ? N Specifically, in the drawing area…

A: An arrow always depicts from a region of high electron density to low electron density ; that is…

Q: Draw Zaitsev and Hofmann products that are expected when each of the following compounds is treated…

A: The reactant is an organic compound. It is a secondary alkyl halide where the halogen is a bromine…

Q: What is the pressure in a 6.00 L tank with 65.4 grams of nitrogen gas at 385 K?

A: According to the ideal gas equation:PV = nRTHere, P = pressure of the gasV = volume of the gasn =…

Q: Draw structural formulas for the a,ß-unsaturated aldehyde or ketone and the lithium diorganocuprate…

A: Organic reactions can be defined as the reactions in which organic reactants react with each other…

Q: Consider the reaction: NH3 (g) + HCI (g) → NH4Cl (s) Given the following table of thermodynamic data…

A:

Q: Name: O. Chem II Classwork I. Give the chemical mechanism for the following using curved arrow…

A: An arrow always depicts from a region of high electron density to low electron density ; that is…

Q: A B H O Type your answers in all of the blanks and submit X₁ X N- 0 The following compound has both…

A: The objective of the question is to predict the site of reaction on a compound that has both an…

Q: 6. Diprotic oxalic acid (HO2C−CO2H) ionizes in water as follows. HO2C−CO2H + H2O  HO2C−CO2- + H3O+…

A: For part (b) 0.10 M solution of potassium oxalateOnly part B is required to be solved.

Q: What is the formal charge on a chlorate ion where chlorine is single bonded to each oxygen? +1 +2 +3…

A: The difference between an atom's valence electron in its elemental state and the number of electrons…

Q: 1. If 0.750 mole of HF is added to 450.0 ml of 0.250 M Ca(OH)2, is a buffer present?

A: The objective of the question is to determine whether a buffer is present when 0.750 mole of HF is…

Q: Calculate the pH of a 0.150 M NH Cl solution given K, of NH, is 1.8x105, pH

A: Given that,Kb for Concentration of salt ,pH of the solution = ?pKw for water =

Q: Draw the product of this reaction. Ignore inorganic byproducts. Drawing 10

A: The reactant is an alkene. It is an organic compound. The reagent is iodine . The iodine reacts with…