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Q: How would the solid Pb(OH)2 (came from KOH) solubility be affected when hydrochloric acid is added?

A: Pb(OH)2(s) ---> Pb+2(aq) + 2OH-(aq)  Hcl(aq) ---> H+(aq) + Cl-(aq)

Q: b) Create a protocol for preparing 500 mL of 0.1 M Borate buffer, at pH 8, assuming you already have...

A: The question is based on the concept of buffer solution.   A buffer is a solution which resist any c...

Q: How many moles of sulfate ions (SO,²-) are present in 2.0 moles of Al (SO4)3? Express the number of ...

A: Al2(SO4)3 on dissociation it gives: Al2(SO4)3 → 2Al+3 + 3SO42- 1 mole of  aluminum sulphate  gives 3...

Q: In the following chemical reaction, which element is the oxidizing agent? 3Sn(NO3)2 + 2Fe --> 2Fe...

A: Increase in the oxidation number is the oxidation and lowering in the oxidation number is the reduct...

Q: The following cell has a potential of 0.10 V at 25oC. Ni(s) | Ni2+(aq) (1.0 M) || H+ (? M) | H2(g) (...

A: Nernst equation is used to calculate so many entities, like the solubility product, pH , equilibrium...

Q: Calculate energy available in 14 Kg wind, if the power available at the rotor of a wind turbine is 6...

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Q: 1. Complete the following reactions. OOH OH ´OH H.

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Q: What is the density of a sample of argon gas at 55°C and 765mmHg?a) 2.99 g>L b) 1.13 * 103g>Lc...

A:

Q: 1. Draw a reasonable arrow-pushing mechanism for the transformation shown along. 2. Identify nucleop...

A: SN1 type mechanism  follow.

Q: The Periodic Table lists all the known elements. Elements are arranged in order of ....... 1 .........

A:

Q: Using this table of standard reduction potentials determine which of the following is the strongest ...

A: The species which oxidises itself and reduce other is known as reducing agent.  

Q: How many moles of solute should be dissolved into 3.0 L of solvent to make a concentration of 2.0 M?...

A: According to Question  given data volume= 3.00 L concentration=2.0 M =2.0 mol/L

Q: What are the applications of hplc?

A: High Performance liquid chromatography (HPLC) also known as High pressure liquid chromatography, is ...

Q: I need help with this please

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Q: According to the reaction and NMR what is the product?

A: This is the Diels Alder reaction .

Q: Determine the values of n, I, ml, ms 5s orbital.

A: n is the principle quantum number  l is the azimuthal quantum number  ml is the magnetic quantum num...

Q: Draw the Lewis Structure & calculate the formal charge of the central atom.

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Q: Which statement is inconsistent with the kinetic theory of an ideal gas?a. Most of the volume occupi...

A: The gas that follows Charles Law, Boyle's Law, Gay-Lussac's Law, and Avogadro's Law is known as Idea...

Q: The compound 1,1-difluoroethane decomposes at elevated temperatures to give fluoroethylene and hydro...

A:

Q: Calculate the pH of a 0.0343 M aqueous solution of ethylamine (C2H5NH2, Kb = 4.3×10-4) and the equil...

A: The reaction for ethylamine (C2H5NH2) with water is given below : C2H5NH2  +  H2O  ⇌  C2H5NH3+  +  O...

Q: Concentration and rate data are provided in the table below for the reaction shown. 2NO(g) + Cl,(g) ...

A: First find the orders with respect to NO and Cl2 then find k . Put these values in data 4 to find ra...

Q: Papaverine hydrochloride (abbreviated papH* Cl¯; molar mass 378.85 g/mol) is a drug that belongs to ...

A: The molar mass of papH+Cl- = 378.85 g/mol The mass of papH+Cl- = 36.0 mg/mL Therefore, its concentra...

Q: Diazotization of aniline first involves the formation of NO* (nitrosonium ion) by the dehydration of...

A: Given

Q: Calculate the molarity of a solution that contains 80. grams of NaOH in 2.0 L of solution. Na = 23 g...

A: Molarity= moles  Of solute/Volume  of solution  in litre Given 80 gram NaOH Volume  2 litre.

Q: What would be the shape of a NHCL2  molecule using VSEPR theory?

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Q: Which indicator would show a pH change from 6 to 7? A Phenol red indicator B Methyl red ...

A: Indicator.                        PH range  Methyl red.                      0.3-1.8 Methyl orange  ...

Q: If energy flows into a chemical system and out of the surroundings, what is the sign of ΔEsurr?

A: Given that,  Energy flows into a chemical system and out of the surroundings  

Q: H Dean stark C) E)

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Q: choose te comect op ton So Hn

A: The question is based on the concept of organic reactions.   we have to identify the Product formed ...

Q: Using Charles’ & Gay-Lussac’s Laws 200mL of oxygen is collected at 27.0℃ and 0.700atm. What woul...

A: In chemistry, to explain the behavior of i9deal gases, certain laws were proposed. These laws relate...

Q: Oxygen was first prepared by heating mercury(II) oxide, HgO. 2HgO(s) → 2Hg(9) + O2(g) Estimate the t...

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Q: Not all XO molecules such as NO, survive long enough to react with oxygen atoms; some are photochemi...

A: Nitrogen dioxide in air: Nitrogen dioxide is a reactive gaseous molecule. Nitrogen dioxide gets into...

Q: What is the first step in the scientific method?

A: The first step in the scientific method is given below:

Q: In much the same way that aldoses are reduced with H 2 and Pd, 2-ketohexoses are also reduced. One d...

A: Fructose is a type of simple sugar. It is a monosaccharide sugar. It makes up 50% of table sugar. It...

Q: 3

A: Solution :     E2 is a bimolecular elimination reaction that involves a one-step mechanism. They are...

Q: Be sure to answer all parts. Draw the products formed (including stereochemistry) when A is treated ...

A: A chemical reaction involves the formation and breaking of bonds. There are basically two different ...

Q: Draw all stereoisomers of Limonene using filled and dashes wedges

A: Solution :     Stereoisomers defined as those isomers which have the same molecular formula but the ...

Q: What is the volume required in mL to make a 0.250 M NaOH solution using 1.2 g of NaPH? The molar ma...

A: molarity = no. of moles / total volume in liters no. of moles = 1.2/40 =0.03 volume req. = no. of mo...

Q: choose the comect opfion Identify the mast likely product s em conting P to aeas was 8. A) B)

A:

Q: 5.600 g of solid CO2is put in an empty sealed 4.00 L container at a temperature of 300 K. When all t...

A: Given, Mass of CO2 = 5.600 g Volume = 4.00 L Temperature = 300 K Molar mass of CO2 = 44.0 g  Pressur...

Q: You react lead (IV) sulfate with lithium nitrate. If you start with 386.3g lithium nitrate, how many...

A: Applying limiting reagent concept and mole concept.

Q: Calculate the pH of a solution with a concentration of 2.7 x 10-7   Select one: a. 6.6 b. 6.5686...

A: b. 6.56864 Given that,  Concentration of H+ in a solution = 2.7×10-7 M

Q: 4. A 3 mole sample of gas at 6 atm contracts from 45 L to 35 L as 1 mole of gas is removed from the ...

A: In ideal gas there is no force of attraction, collision are elastic and pressure will generate by co...

Q: Calculate the vapor pressure at 25 °C of an aqueous solution that is 5.50% NaCl by mass. (Assume com...

A: Given : Temperature = 25°C Percentage = 5.50% NaCl by mass

Q: Complete the table. That is, fill in any missing entries in the second and third columns. Round your...

A: The question is based on the concept of PH and pOH calculations.   pH is defined as negative logarit...

Q: A solution containing 27.55 mg of an unknown protein per 25.0 mL solution was found to have an osmot...

A: Osmotic pressure : π = CRT  3.22760=27.55 × 10-3×0.0821 ×298M ×25.0 ×10-3  M = 6363.54 g/mol here M ...

Q: Aldol product Donor Acceptor сно OH 2. но co,C2H5 CHO CHO A B D co,C2H5 F CHO co,C2HS

A:

Q: A student measures the PO43- concentration in a saturated aqueous solution of aluminum phosphate to ...

A: Answer is explained below. Ans: The solubility product constant (Ksp) for aluminium phosphate is 1.3...

Q: Is it possible to obtain aldol condensation product from the reaction of (CH3)CHCO with itself? Expl...

A: Given  Reactant  

Q: In an electrolytic cell for aqueous KI solution, what will be the effect of [KI]?

A:   As you prolong time of electrolysis, concentration of metal ion in the solution goes down (assumin...

Aromatic Compounds

Aromatic organic compound or aromatic system is an important class of hydrocarbons under the branch of organic chemistry. Aromatic compounds are also called arenas. The definition of aromatic organic compounds can be stated as a class of organic compounds with a planar cyclic ring of atoms bonded through alternated single and double bonds. Due to these alternating bonds, a peculiar feature termed as ‘resonance’, that is, delocalization of pi electrons or the electrons is shared within the atoms of the ring which are present in the aromatic compounds. The word ‘aromatic’ includes a Greek word ‘aroma’ which means smell, indicating that they were named as such due to the sweet odor they produce. Many well-known flavors such as vanilla, cinnamon, and few scents from flowers are extracted from aromatic compounds. Benzene with chemical formula C6H6 is a very common aromatic compound that contains six atoms of carbon held in the cyclic ring of alternate double bonds. It is also to be noted that not all aromatic compounds contain benzene ring. This can be explained by Huckel’s rule.