4. ONOH

Q: Explain why some precipitates do not dissolve once formed with HCl. Explain by showing some examples

A: A question based on solutions that is to be accomplished.

Q: The equilibrium constant, Kc, for the following reaction is 1.92x10-2 at 725 K. 2HI(g) H2(g) + I2(g)...

A: Equilibrium constant, Kc depends on the concentration of reactant and product which are in gaseous s...

Q: Consider the reaction 2A + B C B (a) In the diagram here that represents the reaction, which reactan...

A: The diagram given is, The reaction given is, =>  

Q: 4 NH3 + 5 O2  →  4 NO + 6 H2O How many  moles of oxygen (O2) are needed to produce with 224L of H2O...

A: Given data: The volume of H2O = 224 L    

Q: 7. Draw the structure of these molecules clearly depicting R/S configuration (wedge/dash notation). ...

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Q: Chemists have defined the pH (Hydrogen Potential) of a solution by pH = -log[H+] where [H+] represen...

A: • The values provided in the question are:-     i) pH of a destructive acid rainfall = 2.7    • We n...

Q: ii. Disproportionation reaction is an oxidation-reduction reaction in which the same substance is ox...

A: The oxidation number evaluation for all the species involved in this reaction is the crucial step. 

Q: 2.5 3 7 8 9 10 12 14 16 20 24 100 80 60 40 20 4000 3500 3000 2600 2200 2000 1800 1600 1400 1200 1000...

A: In Stretching vibrations , the distance between two atoms are increases or decreases but atoms remai...

Q: How many Cu grams are produced if 123 mole of CuCl2 is reacted with excess K?

A: Given: Moles of CuCl2 reacting = 123 mol.  

Q: What is the pOH to the correct number of significant figures for a solution when the (OH- = 1.56x10 ...

A: Given : We have to calculate the pOH.

Q: Several syntheses of this compound have been reported, one of which is shown: Br ketone alkyl bromid...

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Q: 232.57 g of mercurous sulfate is dissolved in enough water to form an unknown concentration of solut...

A: In case of dilution of any substance the number of moles of substance remain unchanged. No. of mole ...

Q: If you are using a calorimeter to measure the ΔHsolution of LiCl, which value of cp should you use i...

A: Calorimeter: A calorimeter is a device used to measure the heat energy of a chemical reaction. To me...

Q: Write the expression for the equilibrium constant K, for the following reaction. Enclose pressures i...

A: While writing expression for equilibrium constant, concentration of pure solid and liquid is taken a...

Q: The number of milliliters of 12.0 M HBr required to prepare 250 mL of 5.00 M HBr is ________.

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Q: O =S= 0 OH CH3 Product I NaOCH3 product 2 CSn2)

A: During SN2 reaction there is inversion in copnfiguration

Q: 2. A precipitate of Pbl, is formed when 5 mL of 0.012 M Pb(NO,), is added to 5 mL of 0.030 MKI It wa...

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Q: Many hospitals use radioisotopes for diagnosis and treatment or in palliative care. Three radioisoto...

A: 25. Given that : We have to give the proper symbols of the following elements along with their atomi...

Q: Using your knowledge of molecular structure, identify the main intermolecular force in the following...

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Q: Under what conditions is N0glg)7 NOG)+NO,g spontaneous?

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Q: Provide an IUPAC name for the compound below. ball & stick + labels (Specify (E) or (Z) stereochemis...

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Q: Group prioritization is based on the electronegativity of the atoms directly attached to the carbons...

A: Here we have to determine  prioritization of groups attached to double bonded carbon atom or to the ...

Q: What mass of the precipitate  is produced in the reaction of  15.0 ml of 0.150 M  Na3PO4     and  10...

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Q: d) The reaction 2NO, (g) 2NO (g) + 02 (g) has the rate constantk = 0.63 M-'s. i. Determine the order...

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Q: NaHCO3 (s) → Na2CO3 (s) + CO2 (g) + H2O (g) 1. Calculate the moles of NaHCO3 in 3.00 g of NaHCO3. 2....

A: 1) Given, mass of NaHCO3 = 3.00 g moles of NaHCO3 in 3.00 g of NaHCO3 = ? Note:  Molar mass of NaHCO...

Q: The answers may be one or more than one As discussed in one of the videos, the equilibrium stat...

A: Quantum model helps to predict equlibrium for a quantised Ideal gas in a box containing large no of ...

Q: The dissociation of N2O4 into NO2 is 16.7% complete at 298 K and 1.013 bar. N2O4(g) ⇋ 2 NO2(g) Deter...

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Q: An aqueous solution is prepared by dissolving a gas into water. The partial pressure of the gas was ...

A: Henry law: This law states that the concentration of a gas dissolved in a liquid depends on the part...

Q: Some HI is placed in a sealed flask and heated to 776 K. When equilibrium is reached, the flask is f...

A: Given :-  2HI(g) <=> H2(g) + I2(g)  [HI] = 0.288 M  [H2] = 5.23 × 10-2 M  I2 = 3.43 × 10-2 M  ...

Q: Benzene chemically reacts with chlorine (Cl2) in presence of a catalyst to produce ----.   Question...

A: Chlorination of benzene is the process in which chlorine is react with chlorine (Cl2) in presence of...

Q: Prelaboratory Assignment:Determining the Solubility Product of Pbl, 1. Silver nitrate is added to a ...

A: Concentration of acetate ion = 1 × 10-2 M Solubility product Ksp for sodium acetate = 1.9 × 10-3    

Q: The acid dissociation constant K, of hypobromous acid (HBrO) is 2.3 × 10¯°. Calculate the pH of a 3....

A: Given that : The acid dissociation of HBrO (Ka) = 2.3 x 10-9 Concentration of HBrO = 3.5 M

Q: Calculate the amount of energy (in kJ) required to heat 100. g of water from 20.0 ºC to 35.0 ºC? (Th...

A: Thermodynamics is branch of chemistry which deals with heat gained or heat lost by the system. 

Q: Which compound has the highest boiling point?     Question 4 options:   octane (C8H18)   decane ...

A: decane (C10H22) compound has the highest boiling point. the boiling point of an alkane depends on th...

Q: 1.1 (a) A sample of air occupies 1.0 L at 25 °C and 1.00 atm. What pressure is needed to compress it...

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Q: . What is ΔHorxn of NH3 (ΔHof = -46 kJ/mol) + O2 = NO2 (ΔHorxn = 34) + H2O (ΔHorxn = -286)

A: Since you have posted multiple unrelated questions as per guidelines we can answer only one per sess...

Q: B. Write the name of the following Br NO2 ZON CH3 Br HC CH CH3 CH3 HC H2

A: The IUPAC name of the following molecules is given below.

Q: 4. Terpenes are substances derived from active isoprene or isopropyl pyrophosphate, they are the mai...

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Q: In each of the following molecules 1-6, identify the relation between the circled hydrogen atoms as ...

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Q: Balance this reaction.  If a coefficient is one, enter "1" explicitly.   P+O2 → P2O5

A: In a balanced reaction, all atoms of all elements and charges should be equal on both sides of the r...

Q: How much mL of BaSO4 will be recovered given the following: Solution A: Na2SO4(aq) = 0.01 M; V = 10...

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Q: Classify the following if they represent  (A) first order reaction (B) second-order reaction (C) ...

A: given, 1. 1At=kt+1A0   2. lnA0At=kt     3. At-A0=-kt             4.  At=-kt +A0                     ...

Q: 1) Dissolution and precipitation a) explain whether the dissolution of a salt is an exothermic or e...

A: Here we have to explain dissolution of salt in aqueous solution is exothermic or endothermic.  

Q: QUESTION 6 If two wavefunctions, w(x) and p(x), are orthogonal, this means that they have the follow...

A: Orthogonal set is that where probability of finding particles is zero. And Narmalized set is that wh...

Q: constitutional isomers

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Q: e concentration of M

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Q: Identify the missing species in each nuclear equation. Replace the question marks with the appropria...

A: In a balanced nuclear  reaction  sum of mass numbers of the reactants equals the sum of the mass num...

Q: 3. What mass of NaA (MW=100 g/mole) must be added to a 100.0 ml of a 0.1 M solution of HA (Ka=1x10-5...

A: Buffer solution: The solution that resists the change in pH is known as a buffer solution. The buffe...

Q: It takes 38.6 kJ of energy to vaporize 1.00 mol of ethanol (MW: 46.07 g/mol). What will be ΔSsys for...

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Q: The dissociation of N;O4 into NO2 is 16.7% complete at 298 K and 1.013 bar. N2O«(g) =2 NO2(g) Determ...

A:

Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.