The wavelength of the green light from a traffic signal is centered at 522 cm. What is the frequency of this radiation in MHz?

Q: True or False _____1. A change in temperature in reaction will change the value of the equilibrium…

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Q: A mixture of pure BaCO3 and pure Na2CO3 weighs 1.000 g and has the total neutralizing power of 15.37…

A: the solution is shown below

Q: A 9.802-g portion of NaCN was dissolved in enough water to prepare 1.00-L of solution. Calculate (a)…

A: Given,  A 9.802 g of NaCN was dissolved in enough water to prepare 1.00-L ofsolution. (a) the pH of…

Q: Chemistry Question

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Q: Write a balanced net ionic equation to show why the solubility of Pb3(PO4)2 (s) increases in the…

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Q: A certain half-reaction has a standard reduction potential E+0.95 V. An engineer proposes using this…

A: Answer: Standard cell potential of a galvanic cell is: E°cell=E°cathode-E°anode   Given data:…

Q: Using Table 6, calculate absolute errors in energy differences (in kJ mol-¹) for both methods in the…

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Q: What is the calculated value of the cell potential at 298 K for an electrochemical cell with the…

A: An electrochemical cell is the cell in which electrical energy is converted to chemical energy.…

Q: Given the equation in an acidic medium: Cr2O72¯ + Mn2+ --> Cr2+ + MnO4¯   Choose all the…

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Q: How do you use the amount of 0.01 M NaOH used in titration to determine protein content? NaOH was…

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Q: Given two buffer solutions:       Buffer 1 : 0.200 M CH3COOH - 0.200 M NaCH3COO       Buffer 2 :…

A: The buffer solutions given are, Buffer 1 : 0.200 M CH3COOH - 0.200 M NaCH3COO          Buffer 2 :…

Q: Calculate the entropy of HBr at 298 K and 1.00 bar, given that the bond length is 1.41 Å and the…

A: Srot=R ln 8π2IkBTσh2+R                                (1)

Q: Complete the weights of compounds. Show your solution.   Mass of copper (II) sulfate pentahydrate,…

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Q: A secondary cell (battery) can operate either as a galvanic or an electrolytic cell. True or False…

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Q: The paracetamol formula skeleton structural what are the carbon sites what are the hydrogen sites…

A: The reactive sites of paracetamol are,

Q: What is the pH of a 0.0025 molar acidic solution?

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Q: What is the origin of the attraction between atoms in a Van Der Waals material? Coulomb repulsion…

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Q: How many KJ of energy are released when 6.39 g of Fe reacts with excess O₂? Given the following…

A: Given :  Mass of Fe = 6.39 gm  4Fe + 3O2 -----> 2Fe2O3.      ∆H = -1625 KJ

Q: Answer all questions 1. It has been announced on radio that a toxic gas is spreading towards UENR…

A: The solution is given below -

Q: e coefficient for OH after balancing the following re ote that element X and Y are NOT Hydrogen,…

A: Given reaction is  YO4- + XO32- ---> Y2O3 + X2O82- Step-1:Splitting into half reactions  2XO32-…

Q: Briefly discuss titration errors from the use of acid/base indicators

A: There are two types of errors that occurs from the use of acid / base indicators. Determinate error…

Q: Give the mechanasim Br₂ ccty HBr H₂02 НВО C

A: Reaction 1 : Br2 addition to alkenes produces trans -1,2-dibromo compound. Reaction 2 : HBr addition…

Q: At 100 C the value of Keq is 2.2 x 10^-8. The initial concentration of phosegene is 1.5 mol/L. What…

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Q: Give the reaction mechanism (showing curly arrows) for the bromination of methane in the presence of…

A: Here we are required to show the mechanism of the reaction

Q: is 1.44 M, and the Zn2+ concentration is 9.06x10-4 M ? 1(s)→→→→→ H₂(g) + Zn²+ (aq) V on as written…

A: Cell reaction is 2H+ + Zn -----> Zn2+ + H2 E°cell = E°c - E°a    = 0 - (-0.76) E°cell= 0.76 V…

Q: use principles of the Kinette molecular Theory to respond to the quation below. slove all sub parts.…

A: a.

Q: True or false: Iron in the +2 oxidation state could create octahedral complexes True or False: Salt…

A: Given statements are : 1.Iron in the +2 oxidation state could create octahedral complexes 2. Salt…

Q: Balance the reaction between S2- and CIO3 to form S and CI in basic solution. When you have balanced…

A: Step-1 Write the equation with oxidising number-

Q: When the Cu²+ concentration is 4.32x10-4 M, the observed cell potential at 298K for an…

A: Answer: In the given cell reaction Mg is getting oxidized and Cu2+ is getting reduced, therefore Mg…

Q: 5) C,H,X in this compound MASS SPECTRUM 100 80 60 40 20 0.0+ 20 40 60 80 100 m/z NIST Chemistry…

A: Note : M: M+2 ration is 3:1. Therefore the compound is having chlorine atom. m/z = 77 belongs to…

Q: + e Mn2+ E = +0.32 - - 2e → V E = -0.49 answer should be entered with 3 DIGITS; do not enter units;…

A: In electrochemical cell,  Standard cell potential is given by E°cell = E°c - E°a = -0.49 -(0.32) =…

Q: sider the following reaction at 298K. (aq) + Cr²+(aq)→→→→→→ Ag(s) + Cr³+ (aq) standard Gibbs free…

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Q: Calculate the % relative error in hydronium ion concentration by using concentrations instead of…

A: Given Ka, Acetic Acid → 1.75×10-5 Ammonium ions → 5.70×10-10 Chloroacetic Acid → 1.36×10-3…

Q: Consider the following reaction at 298K. 2Fe³+ (aq) + Fe(s) 2Fe2+ (aq) + Fe²+ (aq) The standard…

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Q: What is the intermediate A? GMU 07654 CI t-BuOH pyridine A C11H2002

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Q: Find the AH for the reaction below, given the following reactions and subsequent AH values:

A: First equation multiply by 2 so: 2OF2 + 2H2O ------------ 2O2 + 4HF Opposite the Second equation:…

Q: Ca²+ (aq) + 2e → Ca(s) OA.0.21 V OB. -0.47 V OC -0.21 V OD.0.47 V OE. 0.42 V A Moving to another…

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Q: Molecules Nitrogen trifluoride Carbon diselenide Aluminum triiodide Lewis structure Dots Lone pair…

A: The Shape is determined  by the central atom and its valence  electron.

Q: 6) C,H,X in this compound 100 80 MASS SPECTRUM 0.0 40 120 80 m/z NIST Chemistry WebBook…

A: Note : M:M+2 ratio is 1:1. Therefore the compound is having bromine atom. m/z = 43 belongs to propyl…

Q: How many grams of water at 100 c could be changed from liquid to gas if 4320 calories of heat were…

A: Here we have to use standard value of heat of vaporization of water. Using that value we can…

Q: Given two buffer solutions:       Buffer 1 : 0.200 M CH3COOH - 0.200 M NaCH3COO       Buffer 2 :…

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Q: How do you use the amount of 0.01 M NaOH used in titration to determine protein content? NaOH was…

A: NaOH being a secondary standard, is standardized using KHP.

Q: Write a balanced chemical equation for the complete oxidation of N₂ to form N2O5 (g). Express your…

A: Oxidation of N2 produces, 2N2(g) + 5O2(g)→2N2O5(g)

Q: Acetic acid (Kb = 3.07 °C/m) normally

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Q: Chapter 13. Give 5 examples of wetting in polymer chemistry "problems", much like the wetting…

A: Wettability is ability of a liquid to maintain contact with solid surface.wettability is measured by…

Q: using the classicial definition of kinetic energy K=1/2mv^2 and the quantum mechanical definition of…

A: Given that, The kinetic energy is K =12mv2. The linear momentum operator is px=-ihddx. We have to…

Q: How much silver was there in the solution if all the silver was removed as Ag metal by electrolysis…

A: Given, Time (t) = 0.60 hr = 2160 s Current (I) = 1.00 mA = 1.00 × 10-3 A Amount (in grams) of silver…

Q: The electrolysis of molten AlCl3 for 3.71 hr with an electrical current of 39.6 A produces how many…

A: The mass of a compound can be calculated by the number of moles and the respective molar mass of the…

Q: For each item, indicate if it is true for galvanic cells only, electrolytic cells only, both or…

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Q: Choose the correct compound #1 and #2 to give the product for the following reaction: 1) NaNO₂, HCK…

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Atomic Structure

The basic structure of an atom is defined as the component-level of atomic structure of an atom. Precisely speaking an atom consists of three major subatomic particles which are protons, neutrons, and electrons. Many theories have been stated for explaining the structure of an atom.

Shape of the D Orbital

Shapes of orbitals are an approximate representation of boundaries in space for finding electrons occupied in that respective orbital. D orbitals are known to have a clover leaf shape or dumbbell inside where electrons can be found.