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Q: The half-life of selenium-83 is 22.3 min. If a sample contains 24.0g of selenium-83, how long will…

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Q: Calculate the molar enthalpy of solution.

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Q: what is the pH of 5.6 x 10^-4M HCl

A: Hydronium ion concentration is an important parameter of an aqueous solution. The concentration of…

Q: Write the reaction involved in Ferrox Test.              a. What is the species responsible?…

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Q: Among 5 different species (VO,*, Vo2*, v³*, v²*, v), how many are stable in water under pH=0? Acidic…

A: This diagram ( at pH= 0) just give you with ordinary value only for conceptual basis.Here we can see…

Q: 9.19 Judging from the following electrostatic potential maps, which kind of carbonyl compound has…

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Q: Ferrox Test Reagent: FENH4(SO4)2 (Crystal of ferric ammonium sulfate) + KSCN (Crystal of potassium…

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Q: 3. In the following reaction, acetic acid and ethanol react together to form ethyl ethanoate and…

A: Given that, At equilibrium, concentration of following compounds are, [CH3CH2OH]=0.30 moldm-3…

Q: Determine the pOH of a 1.567 M of NazSO3 solution. (Ka for HSO3 is 6.3 x 108)

A: Na2SO3 is a basic Solution , so we would Calculate Kb value and use given Concentration to calculate…

Q: Round each of the following numbers to four significant figures and express the result in standard…

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Q: Directions: Use and interpret the phase diagram below to answer the following questions. Write your…

A: The phase diagram represents the different phases of the substance and the pressure and temperature…

Q: 6.18 Identify the Brønsted-Lowry acid and the Brønsted- Lowry base on the left side of each…

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Q: Based on Part D, "The Nature of Reactants" in the experiment, "Kinetics and Reaction

A: Based on Part D, "The Nature of Reactants" in the experiment, "Kinetics and Reaction Rates", which…

Q: 4. What is the frequency of a wave that has a wavelength of 28 m? Remember that c= 2.998-10 m/s. O…

A: Given-> Wavelength = 28 m Speed of light (c)= 2.998 × 108 m/s

Q: (b) Supported lipid bilayers (SLBS) are widely used in biophysical research to investigate the…

A: The answer is provided below-

Q: Organic chemistry:What does a percentage yield of 55.16 and percentage recovery of 181.30g mean .I…

A: Percentage yields and percentage recovery are two different things that are used to indicate the…

Q: Calculate the mass (g) and moles of the alcohol sample.

A: 2.) Mass can be calculated using volume and Density .  Moles can be calculated using mass and molar…

Q: (i), (ii), [ii), [iv], [v], [highest] and [lowest] I. CH;NH2 CH;CH;CH3 „CH3 II. CH,OH II CHCCH, V.

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Q: Which of the following expression indicates the formation of BaSO4 saturated solution? Select one: O…

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Q: pls solve this ques needed urgently will give you many upvotes

A: What is the pH of 10mL aliquot of toluic acid.

Q: ZnCl2(aq) Molecular: Ionic: Net-Ionic:

A: Given, ZnCl2(aq) Write down the molecular,ionic and net ionic equation. And also is it acidic…

Q: 17. Draw the structures of Compound 17a. and 17b. resonances Calculate the Unsaturation Index of…

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Q: What is the pH of 10mL aliquot of toluic acid (with a concentration of .1837M) after 21.05 mL of…

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Q: Which type of ligand would have the sharpest titration curve with a metal M? (A Hexadentate B…

A: The type of ligand that would have sharpest titration curve with a metal M is:

Q: Practice Exercise Which of the following couples are buffer systems? (a) KF/HF, (b) КBr/НBr, (с)…

A: Buffer solution are those which doesnot change its pH by addition of small amount of acid , base or…

Q: in order to dilute a base/acid do you add water to the acid/ base or add the acid/ base to water

A: Water with acid/base reaction is exothermic in nature .  when water is added to acid/base , the…

Q: In the laboratory, strontium chromate (Ksp = 3.6 x 105) can be prepared by mixing solutions…

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Q: A 2.25 mol sample of an element has a mass of 51.8 g. What is the molar mass?

A: Answer: 23.02 g/mol

Q: 5 ml of a 0.2 M NH3 solution are added to 5 ml of a 0.1 M NHẠCI solution (Kb for NH3 is = 1.8 ×…

A: Answer: Buffer solution is a type of solution that resists the change in its pH on adding small…

Q: Imagine you have a water bottle that is partially filled with water and sealed. Which situation…

A: Equilibrium is the state where the rate of forward reaction becomes equal to the rate of backward…

Q: For bulk crystalline sample which technique is best ? Give me handwritten answer with explaination?

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Q: 3. Which one of the following compounds is the strongest acid? OH II. Multiple Choice: Chose the one…

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Q: For the compund Br Name the compound 3-bromo-4-chloro-5-methylhe Identify each chiral center Three…

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Q: 26 1 3. 12M9+On → le+

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Q: A. In which of the solutions below would AgBr have the highest solubility? 0.020M KBr, 0.010M LiBr,…

A: Answer: For a sparingly soluble salt, we consider that all its dissolved part is in ionized form and…

Q: Draw the Born-Haber cycle and use the data below for the formation of calcium chloride, to (ii)…

A: Let us draw  for Calcium chloride.

Q: What mass (g) of calcium chloride do you need to make 150.0 mL of a 0.750 M solution?

A: Molarity is defined as the number of moles of solutes present in per litre of solution.

Q: uestion 27 "A new element (Rr) has been synthesized and its properties analyzed. When 0.157g of Rro…

A: Answer: Enthalpy change for a reaction is an extensive property, therefore as moles of reactant will…

Q: Convert the following measurement. mol 8. mol 4.86 x 10 2 kg m g.cm

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

Q: What is the pH of an aqueous solution made by combining 44.16 mL of a 0.4192 M sodium formate with…

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Q: (i) For the following reaction catalysed by an enzyme E E +S ES k-1 2, E + P outline the…

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Q: of the product from the first step (Product-1 uct-2) for the two-step reaction sequence si OSO 4.…

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Q: pls solve this ques quickly needed urgently will give you many upvotes

A: Given data: Propane is burnt with oxygen.

Q: When salt (NaCI) is dissolved in water, the molar enthalpy of solution (AHsol) is +3.9kJ/mol. If 40g…

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Q: 3

A: Starting with optically pure R or S-2-butanol which method below would give the best yield of the…

Q: 16.20 (a) Write an equation for the react ion in which HSO;(aq) acts as a base in H,O(1). (b) Write…

A: ->Bronsted acid is specie which can donate hydrogen ion and bronzed base is specie which can…

Q: pls

A: Propane is burnt with oxygen.

Q: Which statement is correct regarding the following reaction? (OC);Mn0)-Mn0(CO)5 + Br2 ----->…

A: Polynuclear complexes have generally less CO frequency than mononuclear complexes have.Given…

Q: Which of the following changes would result in an increase of nitrogen dioxide, NO,? N204(e)…

A: Given- N2O4(g) <->2NO2(g).           ∆H°=58kJ

Q: Protein Z has an absorptivity (e) of 0.56 mL·mg1.cm 1 at 280 nm. You measure the absorbance at 280…

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Stereochemistry and Isomerism

Stereochemistry deals with the three-dimensional structure and properties of molecules. It explains the arrangement of atoms and their manipulation within a molecule in a 3D structure. Stereochemistry can be dealt with all types of molecules. Based on the stereochemistry of a molecule, the physical and chemical properties of the molecules vary.