Explain the principles of UV-Vis Spectrometer

Q: PLS.HELP.. THEY ARE PART OF 1 QUESTION BUT THEY ARE DIFFERENT QUESTIONS

A: When electricity (the flow of electrons) is passed through a solution, it causes an oxidation-reduct...

Q: Why do we use distilled water and not tap water for boiling point elevation experiment?

A: Boiling point elevation occurs when there are dissolved minerals in the water.Distilled water usuall...

Q: change in the concentration or pressure of one of the gaseous reactants or pro compression of the sy...

A: Effect of change on equilibrium is determined by Le-Chateleir principle.  According to this law, the...

Q: A 4.50g of Na reacts with 10.0g of water and produce sodium hydroxide and Hydrogen gas. Calculate th...

A: Given, mass of sodium (Na) react = 4.50 g mass of water (H2O) react = 10.0 g maximum amount of Hydro...

Q: What is the pH of the solution obtained by mixing 35.00 mL of 0.250 M HCI and 35.00 mL of 0.125 M Na...

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Q: A 47.4g sample of a metal was heated to 94oC then quickly transferred to an insulated container cont...

A: Answer: This question is based on energy conservation. When metal will be put into the water, energy...

Q: Copper can be electroplated at the cathode of an electrolysis cell by the half-reaction: Cu²+ (aq) +...

A: Half cell reaction :  Cu2+(aq) + 2e-   ---> Cu(s)  Mass of copper = 332 mg  Current = 6.7 A  Time...

Q: Part A Metal plating is done by passing current through a metal solution. For example, an item can b...

A: Given, Current = 8.60 A  Time = 14 min   

Q: 10. Choose two of the following electron configurations to identify the ion or atom. Be sure to expl...

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Q: 6. Which of the following properties increases as the IMFA becomes stronger? O boiling point O vapor...

A: The attraction forces between the different molecules are known as intermolecular forces.

Q: The normal molar solubility of cobalt (11) hydroxide, Co(OH), is approximately 710 M and the pH of a...

A: Solubility is the amount of solute that dissolves in a solvent 

Q: Balance the reaction.   note: Add four numbers. __________ C7H14   +    __________ O2  →   _______...

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Q: Hello I am having a hard time understanding this question, can you please explain this to me. Rank ...

A: This question is the application of colligative properties of solutions.  

Q: 2 ZnS + 3 O2 --> 2 ZnO + 2 SO2 a) Determine the mass of zinc oxide that should be produced in the...

A: The reaction will proceed according to the amount of limiting reagent present in the reaction. It wi...

Q: For the following expressions, how many significant figures will the answers have: a) (0.235)(0.0035...

A: The final number of significant digit in any calculation is the least number of significant digit pr...

Q: Hydrogen sulfide dissociates according to the following equation: 2H S(g) 2H (g) + S (g)  In a mixtu...

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Q: Compare diffusion and osmosis

A: The movement of molecules from higher concentration to lower concentration is known as diffusion. Di...

Q: Determine if aqueous solutions of these salts are acidic, basic, or neutral. a) K2CO3 b) CaCl2 c) KH...

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Q: How do you create an equation for the dissolution of a solute in a solvent. For example, HCL in H20?

A: A homogeneous mixture of two or more substances is known as a solution. The species which present in...

Q: Which of these mixtures represents a shift in the reverse direction? Select all apply

A: Here  Reaction takes place in which equilibrium is established. 

Q: The Mole Concept Sulfur compounds are converted to H2SO4 while NO, compounds are converted to HNO3, ...

A: Given reaction is :  NH4+ + 2O2 --------> NO3- + H2O + 2H+  

Q: How much is the energy required for vacancy formation for Pb at its melting temperature of 620.6°F i...

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Q: Burning 1.02 g of a fuel causes the water in a calorimeter to increase by 13.7°C. If the calorimeter...

A: Given data : Mass (m) = 1.02 g Increased temperature (ΔT) = 13.7 °C Heat capacity (C) = 3.09 kJ/°C

Q: Draw the Lewis structure and state the molecular shape and electron geometry for each of the followi...

A: (a)- BH3 (b)-N2  

Q: Compute for the volume of a 5.0% (w/v) solution of ketamine contains 80 mg.

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Q: Which element comprising Mg(OH)2 has the highest percentage by mass? RSK. Oxygen KRS. Hydrogen RKS. ...

A: % w/w for an element in a compound = (mass of element/total mass of compound) × 100% 

Q: Balance th

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Q: Chlorine gas used for disinfection combines with water to form hypochlorous acid (HOCI). The HOCI io...

A: Given, Chlorine gas is used in disinfection of water and it forms hypochlorous acid, according to th...

Q: Determine the pH of a 0.31 M solution of NaN3 (Ka for HN3 = 1.9 × 10−5). Express your answer using ...

A: NaN3 is salt of weak acid and strong base and it is basic salt  pH = 1/2 ( 14 + pka + log C)

Q: 9. The data below was measured for the decomposition of a reactant, A. Indicate the order of the rea...

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Q: What volume of 0.386 M KOH, V, can be neutralized with 70.0 mL of 1.68 M HNO,? V =

A: KOH and HNO3  are strong base and strong acid respectively 

Q: 15. Kkura found a sulfide ore in the dungeon which she identified to be chalcocite. While waiting fo...

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Q: An automobile engine provides 623 Joules of work to push the pistons. In this process the internal e...

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Q: [References) A few hydrogen and oxygen molecules are introduced into a container in the quantities d...

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Q: Rank the following compounds in order of increasing boiling point. Be sure to answer all parts. A) (...

A: Alcohols has highest boiling point than ether because alcohol can form hydrogen bonds. ->as the b...

Q: Answer the following questions and show all calculations: a. Explain what a dilution factor is, in y...

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Q: Calculate the pH for the strong acid/strong base titration between 50.0 mL of 0.100 M HNO3(aq) and 0...

A: During titration of acid and base, equivalent of acid and base becomes equal and depending upon the ...

Q: The density of 85% phosphoric acid is 1.70 g/ cm. What is the volume of a solution that contains 17g...

A: We'll solve this question using basic mole concept.  Here the concentration of phosphoric acid is gi...

Q: Sodium sulfate 10-hydrate, Na,SO,· 10H,0, dehydrates according to the equation Na,sO̟ 10H,0(s) =Na,s...

A: The equilibrium constant of a gaseous reaction can be given by the ratio between partial pressure of...

Q: conversions

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Q: Which of the following solutions can act as a buffer? Group of answer choices 100 ml of 0.2 M HCl + ...

A: Given,  Which of the following solutions can act as a buffer? Group of answer choices a). 100 ml of...

Q: ml?courseld=172215518OpenVellumHMAC=163a0fc0fe714bd3b513d12c3142f1f0 G kent state - Google.. Q Sched...

A: The given reaction is  CH2 = CH2 + H2O - - > CH3CH2OH When ethylene is treated with water then th...

Q: entropy

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Q: Draw the reaction mechanism showing bonds that are broken/formed

A: The reaction is hydrolysis of amide and the mechanism

Q: Chromium forms a body-centered cubic unit cell and has a density of 7.18 g/cm3. From this informatio...

A: There is a formula to determine the density of a solid using the Z-factor, molar mass and edge lengt...

Q: Consider a solution initially containing 0.30 M of CH3NH2 mixed with 0.50 M of CH3NH3Cl in water. Wh...

A:

Q: Compute for the composition, in atom percent, of an alloy that consists of 92.5 wt% Ag and 7.5 wt% C...

A: Given data : Wt% Ag = 92.5 Wt% Cu = 7.5

Q: 5. How many grams of water are produced from 2.5mol of oxygen? ( H2 + O2-> H2O SKR. 2.8 g RKS. 23 g ...

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Q: The pH of a 0.0057 M solution of Ca(OH)₂ is

A: Given- Concentration of Ca(OH)2= 0.0057 M

Q: Rank the following solutions by increasing vosmotic pressure (OP) from low (1) to high (5)  Assign t...

A: Given, Rank the following solutions by increasing osmotic pressure (OP) from low (1) to high (5)  As...

Spectroanalytical Methods

Spectroanalytical methods measure the wavelength and intensity of radiations that are either emitted or absorbed by a molecular or atomic species. These methods are useful for evaluating the electronic or atomic arrangement of the molecules of a given analyte.