HC=CH (e

Q: Define the following terms :(i) Mole fraction(ii) Isotonic solutions(iii) van’t Hoff factor(iv) Idea...

A: “Since you have asked multiple questions, we will solve the first three question for you. If you wan...

Q: What is the number of moles of HCl not consumed by tablet? What is the number of moles of HCl consum...

A: Given, No. of moles of HCl used to dissolve tablet = 50.0 mL or 0.05 L Molarity of HCl = 0.500 M No....

Q: Determine the number of electrons in Ag1+:

A: When the atom donates it's electron then it gets positive charge . 

Q: The mass of an electron is approximately 9.1 * 10^-31 kilogram. Express this number in decimal form.

A: Scientific notation can be described as a way of expressing or representing a very large or small va...

Q: Calculate the percentage composition for PNCI2 - (Enter your answer to four significant figures.) el...

A: Solution: The percentage composition for PNCl2 are as follows --- The molar mass of phosphorus (P) =...

Q: What is the average bond order for the Cl-O bond?

A: Solution Bond order may be a measure of the quantity of electrons concerned fettered between 2 atoms...

Q: Classify the carbon atoms in each compound as 1°, 2°, 3°, or 4°. (b) Classify the hydrogen atoms in ...

A: (a) Classify the carbon atoms in each compound as 1°, 2°, 3°, or 4°. (b) Classify the hydrogen atoms...

Q: consider an experiment in which a drop of I2 is placed on a penny. after 10 minutes, the I2 is wiped...

A: Penny is an American coin containing metals like zinc and copper. The amount of zinc is about 97.5% ...

Q: how each of the acid derivatives is produced from carboxylic acid.

A:

Q: The radioactive nuclide has a half-life of 5.27 years. Calculate the mass of that remains from 0.010...

A:

Q: This is organic chemistry. I’m kind of lost which one is wrong.

A: Given : Some statements are given regarding halogenation of alkenes. To find: Which of the statement...

Q: An sp3 hybridized C–Cl bond is more polar than an sp2 hybridized C–Cl bond.  Question: Rank the atta...

A: An sp3 hybridized C–Cl bond is more polar than an sp2 hybridized C–Cl bond.  The attached compounds ...

Q: chemical engineer must calculate the maximum safe operating temperature of a high-pressure gas react...

A: Given that Diameter of the cylindrical vessel = 16.0 cm Height of the cylindrical vessel = 19.2 cm ...

Q: Draw the product when the attached tripeptide is treated with eachreagent. CH3OH, H+

A: i) If tripeptide is treated with CH3OH:  

Q: A Cu electrode is immersed in a solution that is 1.00 Min [Cu(NH3)4]2+ and 1.00 M in NH3. When the c...

A: The process is : 2H+(aq)+Cu(s)+NH3(aq)→H2(g)+[Cu(NH3)4]2+ The Nernst equation is, Ecell=E0cell-RTnF(...

Q: Strontium-90 is a dangerous by-product of atomic testing because it mimics the action of calcium in ...

A: The expression of energy for the decay process is shown below: E = ∆mc2 Where; m= mass  c = speed of...

Q: Sodium-24 (t1/2= 15h) is used to study blood circulation. If a patient is injected with an aqueous s...

A: GIVEN: t1/2 = 15h N0 =  2.5x109d/s t = 4 days λ = 24 / 15 = 8 / 5

Q: 11. Using the following reaction Zn + 2HCI ZnCl2 + H2 If 8 moles of HCI were added, how many moles o...

A: The answer to the given question can be calculated as -

Q: Classify each of the following as an element (E), a compound (C), or a Mixture (M).   14K gold pu...

A:                                     Answer  Classify each of the o following as an element(E) a comp...

Q: The reaction 2H2(g) + 2NO(g) ----> 2H2O(g) + N2(g) is a first-order in H2 and second order in NO....

A:

Q: Explain why the viscosity of multigrade motor oils is less temperature-dependent than that of single...

A: Multigrade motor oils contain polymers that coil at low temperatures but unwind at high temperatures...

Q: What are the products of the following reaction?

A: The products of the given reaction have to be given,   The given reaction is,

Q: Calculate the pH of a solution that contains 15.8 mL of 1.0 M NaCN, 26.3 mL of 1.0 M HCN and 5.9 mL ...

A:

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: Propose structures for the two fragments of highest abundance in the mass spectrum of hexan-3-amine.

A: Mass spectroscopy: It is an analytical technique that is used to identify compound by the concept of...

Q: . Explain why octahedral coordination complexes withthree and eight d electrons on the central metal...

A: The stability of the octahedral complexes can be best explained by carefully examining the electroni...

Q: Discuss the nature of the bonding in the nitrite ion (NO2). Draw the possible Lewis resonance diagra...

A: The resonance structures of nitrite ion, the steric number, and the geometry of the ion should be de...

Q: In an experiment, 5.00 L of N₂ is saturated with water va-por at 22°C and then compressed to half i...

A: Vapor pressure can be defined as a function of temperature. Therefore, there will be no change when ...

Q: Give the major organic product(s) of the following reaction. 1) 0, ? 2) H202

A: Ozonolysis of reaction :when alkene reacts with Ozone then diketone forms .Then This reaction is kno...

Q: A solution prepared by adding a given mass of solute to 20 g of benzene freezes at temperature 0.384...

A: Kf for benzene = 5.48  Since, solute don't dissociate  m= ∆Tf/kf  0.384=5.48×m m =0.07 ---(1)  Now, ...

Q: How much heat in kcal must be added to 0.47 kg of water at room temperature (20°C) to raise its temp...

A: Specific heat :- The amount of heat required to rise the temperature of 1 gram or 1 kg of a substanc...

Q: Limestone stalactites and stalagmites are formed in caves bythe following reaction:If 1 mol of CaCO3...

A: The chemical reaction is as follows: From the 1st Law of Thermodynamic, we know ∆E = ∆U = q + w The...

Q: Indicate whether the pair of structures shown represent stereoisomers, constitutional isomers, diffe...

A: ∙Stereoisomer are the isomers which have the same connectivity but differ in the spatial arrangement...

Q: What is meant by the term rate determining step?

A: To find: The definition for rate determining step

Q: Show how you would accomplish the following synthetic transformations. Show all intermediates.(a) 2,...

A: The reaction and the intermediates are as shown below : 

Q: In a coffee-cup calorimeter, 120.0 mL of 1.0 M NaOH and 120.0 mL of 1.0 M  HCl are mixed. Both solut...

A: total volume of solution = 120.0 mL + 120.0 mL                                        = 240.0 mL sin...

Q: Chemistry Question

A: Infrared Spectroscopy denotes the extend of interaction of infrared radiation with matter by absorpt...

Q: Bromine has a half-life of 36 hours. A sample containing Br-82 was found to have an activity of 1.4x...

A:

Q: Define Isomers ?

A: Isomers being an important component in pollution industry have also numerous applications in the da...

Q: Arginine has ionizable groups with pKa values of 2.17, 9.04, and 12.48. A researcher makes up 73 mL ...

A: From the pKa values of arginine, it can be stated that, at pH 8.5 second proton is partially dissoci...

Q: Use the References to access important values if needed for this question. 1. How many MOLECULES of ...

A: Q

Q: A mixture of 0.5370 M CO0.5370 M CO and 0.3600 M Cl20.3600 M Cl2 is enclosed in a vessel and heated ...

A: Solution The constant of a chemical change (usually denoted by the image K) provides insight into th...

Q: Explain why each of the attached carboxylic acids cannot be prepared by a malonic ester synthesis.

A: The malonic ester synthesis is a kind of SN2 reaction, which proceeds well only, when primary alkyl ...

Q: EXamine given Yeaction A Chook true answer abont it. a This reaction Cant occur without base Cutaly ...

A: For the given reaction option d is correct i.e. anion in products is conjugated base.

Q: NaCl has a lattice energy -787 kJ/mol. Consider a hypotheticalsalt XY. X3+ has the same radius as Na...

A: The given data contains, The lattice energy of NaCl is -787 KJ/mol,  

Q: Question attached

A: the first that we need to do is establish the reaction involved    Notice that in effect we are in t...

Q: need the molecular equation and ionic equation for all these problems. Thank you.

A: The balanced chemical equations which contains only the formula of the reactants and products are ca...

Q: H.W: Compute A.P.F. for H.C.P?

A: A.P.F = Atomic packing factor H.C.P = Hexagonal close-packed For HCP, No. of particle = 6 The volume...

Q: Which of these metals is the easiest to oxidize?(a) gold (b) lithium (c) iron (d) sodium (e) aluminu...

A: An element undergoes oxidation upon the loss of one or more electrons. The element loses the electro...

Q: The temperature of an ingot of silver is60°C above room temperature right now. Twenty minutes ago, i...

A: Given, The temperature of an ingot of silver is 60°C above room temperature right now and it was 70°...

UV Visible Spectroscopy

Spectroscopy refers to the absorption or emission of light or other radiations by matter. When a substance or chemical absorbs light or radiation, they reach an excited state followed by de-excitation or emission of the light or radiation forming distinct spectra. UV-visible spectroscopy or  ultraviolet-visible refers to the absorption and emission in the ultraviolet and visible regions of the electromagnetic spectrum.