NH :? (H)

Q: A student ran the following reaction in the laboratory at 427 K:PCl5(g) PCl3(g) + Cl2(g)When she int...

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Q: Determine the mass of a nonvolatile, nonionizing compound that must be added to 3.90 kg of water to ...

A: Interpretation: Depression in freezing point is a colligative property that depends upon the mass of...

Q: Consider the following equilibrium: HNO2(aq) + H2O (l) ⇌ H3O+(aq) + NO2-(aq) In which direction (if...

A: Given equilibrium reaction is: HNO2(aq) + H2O (l) ⇌ H3O+(aq) + NO2-(aq) In which direction (if any) ...

Q: What is the best way to accomplish the following transformation? ОН H. LNH2 HO, NH2

A: Look at the compound carefully , there are 3 groups present.  1) Keto group -CO- 2) amide group -CON...

Q: Fill the blanks: Number of dots (electrons) in the Lewis dot Atom or lon Number of protons Number of...

A: The number of protons, neutrons, and electrons in an atom can be determined from a set of simple rul...

Q: What is the percentage composition of each element in hydrogen peroxide, H2O2?  7.01% H and 92.99% O...

A: Molecular Mass of H2O2  =34g/mol Mass of 2H =2g Mass of 2O = 32g percentage composition of hydrogen ...

Q: Ammonia has a normal (1.00atm) boiling point of -33.3*C. Under a pressure of 2.11 atm, what is ammon...

A: Vapor pressure at normal boiling point (P1) = 1 atm Normal boiling point (T1) = - 33.3 oC = (273 - 3...

Q: Bay B Booking.com: Chea.. TripAdvisor Facebook [References) The reaction 1 pt 2 NO2(8) N204(8) 1 pt ...

A: not at equilibrium Concentration of NO2 will increase.

Q: Calculate the reaction quotient and determine the direction in which each of the following reactions...

A: The reaction quotient (Q) measures the relative amount of products and reactants present during a re...

Q: What is the effect of temperature on the rate of reaction? Explain givingreasons.

A: Chemical kinetics is the study of the reaction that how fast or slow a reaction is taking place. The...

Q: Determine the formal charges on all the atoms in the fol- lowing Lewis diagrams. H-N=ö and H-ö=N Whi...

A: The formal charge on all the following structure 

Q: How many electrons Nitrogen atom must lose/gain to become stable? What charge would it obtain?

A: Nitrogen atom has atomic number 7 and electronic configuration: 1S22S22P3 . Nitrogen has five valenc...

Q: What is the concentration of nitrogen gas (in % w/w) dissolved in water under atmospheric conditions...

A: Henry Law is the used generally in physical chemistry which states that amount of gas dissolved in a...

Q: At a given set of conditions, 241.8 kJ is given off when 1 mol of H₂O(g) forms from its elements. Un...

A: Given information: Case-1 : 241.8 kJ is given off when 1 mole of H₂O(g) forms from its elements. ∆H1...

Q: Predict the electron configurations of Cs1+

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Q: Locate the stereogenic center in attached compound and draw both enantiomers.

A: Introduction: A Stereogenic centre is any point that has different substituents such that if any two...

Q: This is a question on our practice test that I don’t know how to answer. Her answer key doesn’t expl...

A: Answer is given in below image

Q: Which one of the following carboxylic acid derivatives can undergo nucleophilic acyl substitution wi...

A: Nucleophilic acyl substitution (acyl transfer reaction) occurs by a two-step mechanism. First, attac...

Q: The reaction 2 Mg(s) + O2(g)----->2 MgO(s) is highlyspontaneous. A classmate calculates the entro...

A: Spontaneous reaction: It is defined as the reaction in which there is the formation of the product u...

Q: I'm not sure what the correct ranking is.

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Q: Fill the table with correct ratios between ions based on the charges of the ions (if there is only o...

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Q: Which one of the following molecules is the LEAST reactive carboxylic acid derivative? `NH2

A: For the least reactivity the carbonyl carbon should have least electrophilicity and leaving group sh...

Q: Use the References to access important values if needed for A sample of chlorine contains 24.3 grams...

A: Elemental form of chlorine is Chlorine gas i.e. Cl2 A mole of Cl2 contains two moles of Cl. Atomic m...

Q: How many moles of water are produced when 6.0 moles of hydrogen gas react with 2.5 moles of oxygen g...

A: Mole concept is widely used in the field of the chemistry to find the concentrations of the substanc...

Q: Does either cis-[Co(en)2Cl2]+ or trans-[Co(en)2Cl2]- have optical isomers?

A: The certain kind of molecules or compounds can rotate the plane of polarised light. They are known a...

Q: At first glance, we expect the Zeff of a valence electron of sodium (Z = 11) to be 1 but in reality,...

A: The effective nuclear charge has Following formula - Z* = Z - S Here, Z* is effective nuclear charge...

Q: You are given an unknown diprotic acid to make an identification. You dissolved 2.0 g of the acid in...

A: The question is based on the concept of quantitative analysis. by the titration of diprotic acid and...

Q: The density of silver is 10.5 g/cm³. Part A What is its density in pounds per cubic inch? Express yo...

A: Density = 10.5 g/cm3 1 gram = 0.0022 pound 1 cm3 = 0.061 in3

Q: 1) For an open system with PCO2=10−3.5 atm what fraction of the total carbonate is in the form of CO...

A: Given: Partial pressure of carbon dioxide= 10-3.5 atm .  To find: Total fraction of carbonate ion pr...

Q: on(s) Lithium ion is: Cation/Anion/Neither # of protons # of electrons Charge (1-, 2-, 3-, 1+, 2+, 3...

A: Lithium has atomic number is 3 It's electronic configuration is 1s22s1. It has one valance electron ...

Q: In the following reaction, oxygen is the excess reactant.SiCl4 + O2 → SiO2 + Cl2The table shows an e...

A: In trial 1, Starting Amount of SiCl4 = 120 g Starting Amount of O2 = 240 g Molecular mass of SiCl4 =...

Q: When aqueous solutions of potassium fluoride and hydrochloric acid are mixed, an aqueous solution of...

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Q: Express in Molarity, Normality and molality 99.5 % acetic acid by weight, having a density of 1.06 g...

A: Molarity = number of moles of the solute/ volume of the solution in litre Molality = number of moles...

Q: The reform reaction between steam and gaseous methane (CH) produces "synthesis gas," a mixture of ca...

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Q: Chemistry Question

A: Kinetic energy of cesium  E = hv  Where h = plank's constant = 6.626 ×10-34 J s  v = frequency of  u...

Q: What are the frontier orbitals for [Pt(CN)4]2- What are the donor and acceptor orbitals? Identify th...

A: Introduction- Coordination compounds- These are the compounds which contain a complex part formed wh...

Q: K. 5.6 x 10 at 500 K for the dissociation of iodine molecules to iodine atoms. L(8) 2 I(s) A mixture...

A: Given: The concentration of I2 and I in the reaction mixture is 0.020 mol/L and 6.0×10-8 mol/L, resp...

Q: Which of the following mixtures would result in a buffered solution when 1.0 L of each of the two so...

A: Buffer solution:- Any solution which resists its pH change on adding small amount of acid, small amo...

Q: Which type of reaction would convert 1-hexanol in hex-1-ene? A) Hydration Acid-Catalyzed Dehydration...

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Q: Draw the structure and name a compound with the formula CH1g that forms only one product with the fo...

A: Draw the structure of C8H18  and also give a name of the compound

Q: Is my answer right ?

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Q: A chemist wants to extract copper metal from copper chloride solution. The chemist places 1.50 grams...

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Q: For each row in the table below, decide whether the pair of elements will form a molecular compound ...

A: Generally, when two non metals combine together, they form molecular compound held together by coval...

Q: A pure sample of a hydrocarbon, a compound containing only hydrogen and carbon, was burned in the pr...

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Q: Please calculate the Ka for a weak acid given the following data: pH = 3.72, and an initial acid con...

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Q: Use the letters of the structures below to answer the next 4 questions. (Be able to defend your resp...

A: Amino acids: are the organic compounds that contain the carboxyl and amino groups in a carbon chain....

Q: orgo chem II nmr  please help me fill out this chart!

A: C13-NMR helps in deduction of chemical formula/ structure for compounds by deducing the signals of C...

Q: What is the osmotic pressure of a 0.072 M aqueous Nacl at 308 K? (This is not a diffcult problem, so...

A: Colligative properties of solutions are defined as those properties which depend only on the concent...

Q: A synthesis reaction takes place when carbon monoxide (CO) and hydrogen gas (H2) react to form metha...

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Q: Does a reaction occur when aqueous solutions of aluminum sulfate and silver (I) nitrate are combined...

A: In ionic equation electrolytes are expressed in dissociated form i.e ions form.

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.