Listen The pH of a solution of 0.04 M HCI is: 4 1.4 0.4 0.04 The pH cannot be determined Question 4 Listen In a titration of a weak acid by a strong base two equivalents of base are always needed to neutralize all the acid present the equivalence point cannot be defined exactly there is a region in which the pH changes slowly the equivalence point depends on the nature of the added base

Q: 6. In each case, identify the more stable anion (more stable base). Explain why it is more stable:…

A: As S character increases stability of anion increases Anion with pi bond conjugation stability…

Q: CH4 model and how it can appear to have bond angles of 90° (when drawn in 2D)

A: The ideal bond angle for methane (CH4) is 109.50. When drawn in 2D it appears to have a bond angle…

Q: Identify the state or states of matter present at each stage of the graph and What is the boiling…

A: In this question, we have to answer all parts regarding the phase change diagram.

Q: For the following initial and final states shown below in the diagram, a transition occurs involving…

A: When an electron jumps from lower shell to higher shell, then it absorbs energy in the form light.…

Q: -. The mechanism for the reaction of nitrogen dioxide with carbon monoxide form nitric oxide and…

A: The balanced reaction and the intermediate are given below

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Q: water-soluble salt formed by Hg2+ and nitrate 42.215 g was dissolved in a solution containing 12.026…

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Q: Which of the following should be treated as corrosive? 6 M sodium hydroxide Copper metal Acetone…

A: A corrosive substance is the one that destroys or causes damages to living tissues. They can attack…

Q: Write the correct molecular formula for a molecule that has 4 Oxygen atoms, 2 Potassium atoms and 1…

A: 1.Molecular formula is the  short representation of molecular  which represents actual number of…

Q: Find the limiting reactant for each initial amount of reactants. Drag the appropriate items to their…

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Q: Finally, add curved arrow(s) to continue the resonance using the same pattern: an allylic lone pair.…

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Q: The standard enthalpy change for the following reaction is 581 kJ at 298 K. ΔΗ° = 581 kJ SnO₂ (s)…

A: Change in enthalpy is an extensive property. Means its value depends on the amount of matter.…

Q: Combustion of a hydrocarbon in a limited supply of air produces CO in addition to CO₂ and H₂O. When…

A: Answer: Reaction of incomplete combustion: CxHy(g)+(a+b+y2)O2(g)→aCO(g)+bCO2(g)+y2H2O(g) Here: a+b=x

Q: 5. The energy in our bodies mainly comes from carbohydrates, which are broken down into simple…

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Q: e total number of valence electrons in each molecule shown here: Η :Ο: Η Η H :I-C-H H Methyl iodide…

A: We have given two organic compounds and we have to calculate total number of a valence electrons in…

Q: is 2‑bromoethan‑1‑ol and its mirror image chiral and do they contain a plane of symmetry, why?

A: Stereochemistry is a branch of chemistry in which we deal with three dimensional arrangement of…

Q: Which of the following is the name of the following compound:  Mg (NO₂)₂

A: The name of an ionic compound is written as follows: First, write the name of the cation, if the…

Q: Which of the following cell components are found ONLY in eukaryotes, not in all cells? elect all…

A: We have given four cell components and we have asked which cell components are found only in…

Q: 3. a) Provide a structure for 5-bromocyclohex-2-en-1-ol b) Provide a structure for…

A: We can solve these questions by using the basic concepts of the chemistry :…

Q: A Question 5 Retake question You determine the empirical formula of a compound to be CH3. In a…

A: Empirical formula = XY  Molecular formula = (XY)n  n= Molecular mass/Empirical mass  A balanced…

Q: 6. Calculate the uncertainty in the speed of a ball of mass 500 g that is known to be within 1.0 um…

A: According to Heisenberg uncertainty principle,  del X . del Px = h/4π Or, X . mv = h/4π Or, v =…

Q: Give the organic reaction product(s) for the following reactions: CH3CH₂ C CH Br₂(xs)

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Q: 3. Given: AH° -918.0 kJ AH° = 125.2 kJ Br₂(l) + 5F₂(g) ---> 2BrF5(¤) BrF3(€) + Br₂(€) ---> 3BrF(g)…

A: Here we are required to find the enthalpy of the reaction (∆H0).

Q: When two polar molecules are close to each other they will orient themselves so that the positive…

A: Each polar molecule with have positive dipole and negative dipole, so positive dipole  of one…

Q: MISSED THIS? Watch KCV: Reaction Stoichiometry, IWE: Stoichiometry, IWE: Stoichiometry: Read Section…

A: Given that,  Sulfuric acid dissolves aluminium metal as per the equation  2Al(s) + 3H2SO4(aq) ⟶…

Q: Give a clear handwritten answer with explanation....give name and draw all isomers for the given…

A: Note- Since it is a mutipart question, hence I solved first three part of the question according to…

Q: What is the most probable identity of the element X wb symbol is shown below? O a. tellurium O b.…

A: By seeing the element symbol with valance shell electrons we can predict the element name.

Q: For the following reaction, 5.27 grams of diphosphorus pentoxide are mixed with excess water. The…

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Q: Using the models below, show your work to derive the relationship between d and r in each unit.…

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Q: Sodium hydrogen carbonate (NaHCO,), also known as sodium bicarbonate or "baking soda", can be used…

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Q: A. An ice cube is 20 mm on a side. How much energy is needed to melt the ice cubes if their initial…

A: The length of the ice cube = 20 mm  The temperature= 32o F   We have to calculate the energy needed…

Q: The preparation of aspirin is achieved through acetylation of salicylic acid. Provide the full…

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Q: Which bond is most pol C-O b. C-F O a.

A: Nonpolar bond is the bond in which there is negligible or no electronegativity difference between…

Q: _CH4 + __0₂ → _02_CO₂ + _H₂O

A: Balancing of a chemical equation means making each kind of atom equal in number on both sides of the…

Q: .370 mol of octane is allowed to react with .780 mol of oxygen . After the reaction how many moles…

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Q: A solution of CaCl2 in water forms a mixture that is 38.0% calcium chloride by mass, if the total…

A: Given data: The mass percent of CaCl2 in water is 38.0%. The total mass of the mixture is 202.8 g.…

Q: . C. 6. . 6. . S. .. .. _H3PO4 + КОН → K+ _B₂O3 → HCI + NaOH → C + Na + NaOH + Rb + _C6H6 + S8 → _O₂…

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Q: a sample od copper  has mass of 2.45 mg and avolume of 2.733* 108 cubic micro meter. calculate the…

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Q: Once the reaction has reached completion, what amount (in moles) of the excess reactant is left?…

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Q: Enter full electron configurations for each of the following ions. P3− Express your answer in…

A: Atomic number of phosphorus(P) atom is 15.  P atom has 15 elections. But P3- ion consists (15+3) =…

Q: ex Calculate and for the particle in a 1-D box of length L described by: 4(x)=√√(7) sin()

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Q: B. A 1.0-mol sample of an ideal gas is kept at 0 °C during an expansion from 0.003 m³ to 0.01 m³.…

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Q: what are the methods used to reduce the incidence of acid deposition and photochemical smog; e.g.,…

A: Several methods are now adapted to reduce the incidence of acid deposition and photochemical smog…

Q: The solubility of a sparingly-soluble solid such Lead (II) Bromide increases with the presence of…

A: We have given a statement the solubility of a sparingly-soluble solid such as Lead (II) Bromide…

Q: Compare the pH of a 0.040 M HCl solution with that of a 0.040 M H₂SO4 solution. (Hint: H₂SO4 is a…

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Q: What is the pka of the indicated hydrogen? ↓ H

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Q: Decreasing the temperature of a reaction will cause fewer collisions, resulting in faster reaction…

A: According to the Arrhenius equation,                              K= A e-Ea/RT K=Rate constant , A=…

Q: dm mol E17D.1 (b) The Arrhenius parameters for the gas-phase decomposition of cyclobutane, C₂H, (g)…

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Q: In a 0.080 M NH3 solution, what percent of the NH is present as NH?

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Q: Calculate the concentrations of all the species in a 0.100 M Na₂CO, solution.

A: The given concentration of the Na2CO3 solution is ---- 0.100 M In the aqueous solution Na2CO3…

Acid Base Titration

An acid-base titration is the method of quantitative analysis for determining the concentration of an acid and base by exactly neutralizing it with a standard solution of base or acid having known concentration.