Determine the empirical formula of a compound containing 2.76 g of silicon and 13.9 g of chlorine.

Q: Show calculations for making 1X TAE gel running buffer and 1.25% agarose gel for your experiment.

A: Buffer is a solution that tends to maintain pH of the solution when acid or base is added to it. Per...

Q: If 2.00 mL of 0.900 M NaOH are added to 1.000 L of 0.450 M CaCl,, what is the value of the reaction ...

A: NaOH and CaCl2 reacts together to form NaCl and Ca(OH)2. So, 2 NaOH + CaCl2 -> Ca(OH)2 + 2 NaCl  

Q: C,H, + 50, - 4H,O + How many moles of C,H, are in 5.3 x 102 moles of CO,?

A: given :- C3H8 + 5O2 → 4H2O + 3CO2  number of moles of CO2 = 5.3 × 1012 mol  To calculate :- number o...

Q: You are attempted to purify a compound via column chromatography. Before starting the process, you d...

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Q: 1. Fill in the blanks with the MAJOR organic product in the following electrophilic aromatic substit...

A: Since you have posted multiple subpart questions, the answer for first three subpart question is giv...

Q: Determine the viscosity of diethyl ether at 77 degrees Celsius.  (Pa·s)

A: 1. From Dortmund data bank of diethyl ether, The viscosity of diethyl ether at 77°c = 350.15k is 0.1...

Q: Name the highlighted chemical group in each molecule. Lewis structure name of highlighted group Н— С...

A: Highlighted groups 1. NH2 2. OH 3. C=O   

Q: Which combination of AG° and K is possible at standard conditions? 1. AG° = -114 J, K = 0.0053 2. AG...

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Q: 1. For each of the following compounds, give a name or draw a structure, as appropriate. trans-4-phe...

A: IUPAC rules for naming an organic compound: 1. Select the longest possible continuous carbon chain a...

Q: Which of the following is NOT true of the transition state? O a. It is unstable and dissociate into ...

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Q: A nugget of gold with a mass of 521 g is added to 50.0 mL of water.  The water level rises to a volu...

A: Given that, Mass of gold=521g Volume of water=50.0 mL Volume after addition of gold into water=77.0m...

Q: Consider the hypothetical cations, A" and C and anions, B and D. Calculate the AG when 20.0 ml of 0....

A: Gibb's free energy is a thermodynamic potential that can be used to calculate the maximum reversible...

Q: Species AG (kJ/mol) Mg(s) 02(g) MgO(s)-569.6 SO2(g) -300.57 SO3(g) -370.53 CH2(g) 209.2 CO2(g) -394....

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Q: A chemical reaction takes place inside a flask submerged in a water bath. The water bath contains 5....

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Q: 7. Predict the major organic product and propose a mechanism for the following reaction. Show each s...

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Q: What is the molarity of a concentrated solution of sulfuric acid with a specific gravity of 1.84 and...

A: Molarity is defined as the number of moles of solute per litre of solution. Molarity = Number of mol...

Q: A 0.027 M solution of NaY is made and the pH measured at equilibrium. If Y is a weak base and if the...

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Q: 25

A: Calculate the standard enthalpy change for the reaction ., 2C8H18 (l) + 17O2 (g) -> 16CO (g) + 18...

Q: A student performed a reaction using 2-methoxyethanol as solvent under acid catalyst. When the solve...

A: Given that, a student performed a reaction using 2-methoxyethanol as solvent under acid catalyst. Wh...

Q: Increasing the temperature of the water by 5 °F would have a significant impact on cooking times. As...

A: Desired boiling point of water = 217 oF Volume of water/solution = 4 quarts The question requires to...

Q: What are the products of the following reaction? cat. H,SO CH CH OH - O* = 180 %3D + H20* o'CH-CH, A...

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Q: 6. Clearly and completely describe a simple, ONE step (a single reagent added) test that would allow...

A: a. NaOH is the single distinguishing reagent for Bi(OH)3 and Al(OH)3. Al(OH)3 reacts with NaOH to fo...

Q: Phenolphthalein has a pKa of 9.7 and is colorless in its acid form and pink in its basic form. For ...

A: Given value from the question, pH= 7.7 pka=9.7  

Q: A chemist determines by measurements that 0.035 moles of hydrogen gas participate in a chemical reac...

A: Given,  Moles of hydrogen gas participate = 0.035 mol.  The mass of hydrogen gas participate is:

Q: Relate the first law of thermodynamics to how the internal energy of a system can change. Use the pa...

A:                                   Answer  The first law of thermodynamics states that the energy of ...

Q: 0.0242 gon is collected by water displacement in an eudiometer. The gas volume is 29.2 mL. The iquid...

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Q: Terminal alkynes react with Br2 and water to yield bromo ketones. For example: Br2, H20 CH2Br Propos...

A: Alkyne gives an electrophilic addition reaction with bromine water to form alpha bromoketone.

Q: A chemical reaction takes place inside a flask submerged in a water bath. The water bath contains 2....

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Q: The pH of an aqueous solution that is 2.7 x 103 M HCI is . What is the pOH? Circle one: ACID or BASE...

A: Formulas : 

Q: Which of the following statements does NOT explain why KHP is a suitable primary standard in an acid...

A:   KHP is a suitable primary standard in an acid-base titration. Here we have to find out the stateme...

Q: Which of the following occurs when products are added to a chemical reaction in solution or the gas ...

A: -> when reactant or product added then it follow Le-chatelier principle.    

Q: A bicyclist is stopped at the entrance to a valley, as sketched below: E Where would the bicyclist h...

A: A bicyclist is stopped at a entrance to a valley we have to determine P.E , K.E , T.E

Q: What is the difference of using toluene, hexane, and dichloromethane as solvents in SN2 reactions? ...

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Q: Click in the answer box to activate the palette. Balance the equation representing the reaction betw...

A: Given 

Q: Calculated Data for the Equilibrium Constant Kc: TABLE 3 - Concentrations for tube 1 Fe3+ HSCN FESCN...

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Q: The van der Waals equation of state was designed (by Dutch physicist Johannes van der Waals) to pred...

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Q: Which option correctly describes the reactants and products of a chemical reaction? The mass of...

A: In this question, we have to describes the correct statement about reactants and products of a chemi...

Q: The preparations of two aqueous solutions are described in the table below. For each solution, write...

A: Please find your solution below : Acid is a substance that can donate a proton whereas base is a sub...

Q: PHOTOSYNTHETIC PIGMENTS 1.6 0.7 1.4 0.6 1.2E Soret 0.5 HA 0.4 0.8 COOCH 0.3 0.6 phytyl bacteriochlor...

A: Higher the wavelength shorter will be the energy gap between the two energy levels  

Q: (a) Circle the two compounds that are not carboxylic acid derivatives. Circle only two. CONHCH NOH N...

A: A. Carboxylic acid derivatives are : ester, amide, nitrile, anhydride, acid chloride etc.  But (keto...

Q: Which of the following is NOT true about equivalence point and endpoint? O a. The endpoint approxima...

A: Titration is a method to determine the concentration of an unknown solution by using the solution of...

Q: Which of the following techniques would NOT result in a titration error? a. Adding 100mL of distille...

A: Please find your solution below : Titration is a method of quantitative analysis which is used to de...

Q: alculate the mass of excess reagent remaining at the end of the reaction in which 90.0 g of SO2 are ...

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Q: How many grams of ethylene (C2H4) would have to be burned to produce 450 kJ of heat? C2H4(g) + 302(g...

A: Given :-  C2H4(g) + 3O2(g) →2CO2(g) + H2O(l)  ∆H°rxn = -1411 kJ/mol  To calculate :- amount of C2H4 ...

Q: ow much heat is required to raise the temperature of 1.5 x 103 g of water from 45°F to 130.°F? The s...

A: Given, mass of water = 1.5 × 103 g Temperature increase from initial temperature, T1 = 45 oF = 7.22 ...

Q: 1. As you can see in Fig. 1(C), there is an interaction between A475 on SARS-CoV-2 and S19 on ACE-2....

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

Q: Lewis structure

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Q: Be sure to answer all parts. Predict the sign of the entropy change for each of the following proces...

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Q: For a reaction where AH° = +573 kJ/mol and AS° = +1.64 J/mol·K, at what temperature, in K, does X(I)...

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Q: A 1.50 g sample of hydrocarbon undergoes complete combustion to produce 8.80 g of CO2 and 5.40 g of ...

A: Note : Recheck values but process is right

Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.