How many neutrons are there in an atom of lead whose mass number is 208?

Q: 7.0 °C? (assume complete dissociation).

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Q: Predict the expected products in the following reactions.

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Q: What is the formula for the area of a circle?

A: Area of a circle is given by-

Q: 4. Urea, CO(NH₂)2, is manufactured on a large scale for use in producing urea-formaldehyde plastics…

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Q: Select the correct statement from the following options. The greater the polarity of solute, more…

A: Chromatography is a technique for the separation of a mixture into its components.

Q: HO Br HI can i get the name of this structure thanks

A: To write the IUPAC nomenclature of the given compound we must follow following standards rule…

Q: STARTING AMOUNT X 3) 83.3 ADD FACTOR x( ) g/mL 1 Convert the co L 0.0833 142 mol

A: Molarity of solution is defined as the number of moles of solute dissolved per litre of solution.

Q: A A A A HBr Blank 1: which reaction is faster? A or B?......enter in the blank A or B Blank 2: What…

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Q: Select the single best answer. Sodium bicarbonate undergoes thermal decomposition according to the…

A: Here we have to predict in which direction will the following equilibrium reaction i.e decomposition…

Q: The following skeletal oxidation-reduction reaction occurs under basic conditions. Write the…

A: Dear student ,         since you have posted multiple questions we are allowed to solve only first…

Q: Fill in the blanks: Reaction of nitriles with Grignard reagent yields a and yields with lithium…

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Q: Given the reaction 2 Cl2 (g) + 2H₂O(g) + O2(g), ΔΗ° chemical reaction = -742 kJ/mol Determine the…

A: These types of questions are solved using Le Chatlier's principle.

Q: d. The reaction flask has 1.25 atm of the inert gas argon added to it.

A: The  Equilbrium  will shift  according  to Le Chateliers Principle.

Q: Compound A (CH₁0O2) works well in color reaction with FeCl3 solution. Compound A also can reaction…

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Q: Part A Rank the solutions in order of increasing concentration of hydronium ions, H30" (a) hydrogen…

A: The given compounds are hydrochloric acid (HCl) , acetic acid (CH3COOH) and ammonia(NH3) . We have…

Q: Question 3 Given the following: P4 (s) +50₂(g) →P4010(s) A Gº=-2697.0 kJ/mol2H₂(g) + O₂(g) → 2H₂O(g)…

A: We have to predict the standard free energy of formation of phosphoric acid .

Q: Question 8 Which of the following sets is made up of isoelectronic ions? OA. B5-, Sr4-, As3-, Te²-…

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Q: It is easier to relieve steric strain by lengthening bonds than by twisting about torsion angles. O…

A: Difference between tortional strain and steric strain is that , tortional strain can be be reduced…

Q: Situation: Charcoal reacts with steam according to the equation: _C +_H2O ⇋ _CO +_H 2 1. Write the…

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Q: Which of the following is the best method to carry out the following transformation? - OH (a) H₂SO4,…

A: We will draw all the product of each reaction.

Q: Choose from each of four options for the correct scientific notation:  A. 0.0047 Move the decimal…

A: Since you have posted a question with multiple sub-parts,we will solve first three sub-parts for…

Q: true or false osmium tetroxide is an oxidizing agent.

A: Osmium tetroxide is an oxidizing agent . This statement is true of false given below with…

Q: How many distinct alkene products are possible when the alkyl bromide below undergoes E2 elimination…

A: In E2 elimination reaction,the proton and the leaving group removed simultaneously by the base and…

Q: For the redox reaction given below complete the following: Cr2O7-2+ H+ +FeCl2→ Cr+3 + FeCl3 + H2O…

A: Redox reaction : The reaction in which oxidation and reduction takes place simultaneously is called…

Q: Number of atoms of Carbon in 19 moles of C4H10 are:

A: Recall the data, moles of C4H10=19 moles  no. of carbon atom ?

Q: pt pt pt Draw the structural formula(s) for the branched constitutional isomer(s) with the molecular…

A: I have given the answer in the explanation section. Hope you will understand that.

Q: A 50.0-mL solution of 0.0319 M benzylamine was titrated with 0.0500 M HCl. Calculate the pH at the…

A: Henderson-Hasselbach equation. this equation shows the relationship between pH of a solution, the…

Q: Consider the following reaction: 3A(aq) + B(aq) = C(aq) + 2D (aq) In a 3.0-L reactor, 1.10 mol of A…

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Q: An electron-donating group in aminobenzene increases basicity. Select the correct response: True…

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Q: What is the pH of the solution that results from adding 25.0 mL of 0.012 M NaOH to 25.0 mL of 0.024…

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Q: r molecular formulas for a compound with a m o. (b) Calculate DBEs for each formula.

A: Given as,

Q: b. NaNO₂ (Ka of HNO₂ = 4.5 x 10-4) c. NH4NO3 (Kb of NH3 = 1.76 x 10-5)

A: Here we have to calculate the pH of the 0.100 M of the given salts. NaNO2 is a salt of weak acid(…

Q: When 0.100 mol of CaCO3(s) and 0.100 mol of CaO(s) are placed in an evacuated, sealed 10.0-L…

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Q: In inorganic chemistry, explain about bulky ligand. What is bulky ligand ?

A: In co-ordinate complex ligands donate electron density to metal atoms .

Q: In Organic Chemistry, explain about bulky ligand. What are bulky ligand ?

A: A ligand is molecule that donate a pair of electrons to the central metal atom and metal accept that…

Q: Chemistry Identify unknown using NMR spectra.

A: A question based on NMR spectroscopy that is to be accomplished.

Q: Draw the structural formula of the triacylglycerol produced from the reaction between glycerol,…

A: Triacylglycerol is formed by the reaction of glycerol and three fatty acids. Each fatty acid reacts…

Q: What is the whole structure of Mg(OD)Br?

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Q: What is the molarity of an aqueous solution that contains 0.0720 g C₂H₂O₂ per gram of solution. The…

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Q: What is FALSE regarding the laws of thermodynamics? Select one: a. Energy can be neither created nor…

A: Temperature, energy, and entropy are only a few of the physical parameters that the rules of…

Q: What is the correct pairing of peptides shown with the - combination indicated on the Ramachandran…

A: The Ramachandran plot shows the statistical distribution of the combinations of the backbone…

Q: (6) Br₂ ACOH (a-halogenation)

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: NMR signals proton shifts, multiplicity, and coupling constants. CH₂OCH₂CH3. HO H₂ llowing. Include…

A:

Q: Predict the product(s) of the following reaction: CO₂H -H a -CH3 H CH3OH H₂SO4

A: This is an example of esterfication reaction " when a Carboxylic acid reacts with alcohol in…

Q: t the maior organic product of the following reactions.

A: Given ; reactants a) E2 reaction occuring b) E1 reaction occuring C) E2 reaction occuring d)…

Q: Draw the structural formula(s) for the branched constitutional isomer(s) with the molecular formula…

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Q: Question 4 What is the factor responsible for the separation in column chromatography? O Polarity…

A: chromatography is based on the mobile phase which is  solvent and stationary phase which is SiO2.

Q: Match the following products with the proper reactant or reagent in the nucleophilic addition…

A: An aldehyde is an organic compound in which the carbonyl group is attached to a carbon atom at the…

Q: Mass of Sample Trial 1 Trial 2 Trial 3 Weighing bottle Initial mass 163.757g 129.203g 167.423g…

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Q: What value of I is represented by a s orbital? O 3 02 O none of these 01 0 0

A: Azimuthal quantum number can be represented by 'l'

Group 14 Elements

The following elements come under group 14 of the periodic table.