he mole fraction (solute and solvent) and molality

Q: Which of the following Fischer projections corresponds to the compound shown below?

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Q: Methanol (CH3OH) is converted to bromomethane (CH3B1) as follows: CH3OH + HBr CH3B + H20 If 12.23 g ...

A: Given equation is :  CH3OH + HBr ---------> CH3Br + H2O  Mass of CH3Br produced = Actual yield = ...

Q: What mass of solid La(IO3)3 (663.6 g/mol) is formed when 50.0 mL of 0.250 M La3+ are mixed with 75.0...

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Q: Data The following tables include calculated as well as observed and recorded data for Part 1 and Pa...

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Q: A sample of polystyrene, which has a specific heat capacity of 1.880 J-g .°c', is put into a calorim...

A: Given data,Specific heat capacity of polystyrene=1.880J.g-1.oC-1Mass of water=250.0gInitial temperat...

Q: 4) bromocyclobutane (Br-, Bromo branch)

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Q: Before calculating any values, predict on which mountain the balloon will have the largest volume. W...

A: Atmospheric pressure is related to the height from the earth surface. Higher the height , lower is t...

Q: What is electronegativity?

A: The tendency to attract shared pair of electron is called electronegativity.  Fluorine is most elect...

Q: A mixture of helium and hydrogen gas is compressed from a volume of 81.0L to a volume of 70.0 L, whi...

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Q: mass

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Q: The pH of Ca(OH)2(s), a sparingly soluble salt, is 12.45. Calculate the solubility product of Ca(OH)...

A: Given data :  For 1st question :  pH of CA(OH)2 = 12.45  For 2nd question :  Ksp  = 9.8×10-9   

Q: 4..Analyze the HNMR spectrum below:

A: Proton nmr peaks stands for different proton environment present in the organic compound.

Q: addition of HBr

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Q: In addition to the NMR spectrum below, this compound, with formula C5H,0O2, has bands at 3450 cm 1 (...

A: The structure of the following is:  

Q: 2. Name the following compounds. b) d) HC HC CH

A: We have been asked to name the following compounds on the basis of IUPAC nomenclature. 

Q: Convert the following: a. 8.75 g of B2O3 to mol b.167.2 mg of Na2B4O7.10H2O to mol c. 4.96 g of M...

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Q: How many molecules are in 156 g of aluminum sulfate? 1. 2. What is the mass of 5.36 x 102² molecules...

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Q: ieer is H2(9)+I½(9) → 2 HI(g) At the temperature the engineer picks, the equilibrium constant K, for...

A: A chemical engineer is studying the following reaction: H₂(g) +I₂(g) → 2 HI(g) Q = [HI]2/[H2][I2] We...

Q: Date: Period: 011: Calculate the AH for the reaction: C2H4 (g) + H2 (g) => C2H6 (g), from the follow...

A: The enthalpy change is a state function and the Hess law states that the change of enthalpy in a che...

Q: A sample of gas at 20°C has a pressure of 0.9 atm. Calculate the new pressure if the temperature is ...

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Q: If a reaction will occur, give the product(s) otherwise write no reaction. Also indicate if the reac...

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Q: Select all of the atomic-scale pictures that could correctly represent the given balanced chemical e...

A: From the given equation it is clear that A2 is a homodiatomic molecule and B is a monoatomic. From t...

Q: What type of intermolecular forces exist between triethylamine and diethylamine?     Question 7 opt...

A: Concept : 1) Hydrogen Bonding                    2) dipole dipole forces.  Hydrogen bonding takes pl...

Q: 6. 2 kg of H2NCOONH4(s) is sealed in a 50-L vessel. H2NCOONH4(s) = 2NH3(g) + C02(g) Kc = 0.215 a. Ca...

A: Given:  Mass of H2NCOONH4 = 2 kg = 2000 gm  Kc = 0.215  Volume = 50 L 

Q: 1. An aqueous solution is prepared that is initially 0.100 M Cdl2. After the equilibrium is establis...

A: “Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for y...

Q: What is the pH of a solution that has 0.125 M CH3COOH and 0.125 M H3BO3? Ka of CH3COOH = 1.8 × 10−5 ...

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Q: 73/ If the reaction 2H2S(g) - 2H2(g) + S2(g) is carried out at 1065°C, Kp = 0.0120. Starting from pu...

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Q: A(g) + B(g)  C(g) The rate law for the above reaction is: -d[A]/dt = k[A][B] The rate constant is ...

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Q: In this particular problem, draw all possible resonance structures on your notebook. Based on your s...

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Q: Consider the following three substances: n-butyl bromide dinitrogen monoxide hexachloroben...

A: Ans. Option (D) Is right. All the given three substances,n-butyl bromide, dinitrogenmonoxide, hexach...

Q: What is the pH of a 0.150 M NH4Cl solution? Kb of NH3 = 1.76 × 10−5

A: Given, Concentration of NH4Cl solution (C) = 0.150 M Kb for NH3 = 1.76 × 10-5 pH of a NH4Cl solution...

Q: Acrolein test

A: The acrolein test is used to determine if oil or fat is present. When oil or fat is heated in the pr...

Q: A major component of gasoline is octane (C,H,). When octane is burned in air, it chemically reacts w...

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Q: A vitamin syrup for infants contains 27.44 mg of zinc sulfate monohydrate (ZnSO4.H2O) and 100.00 mg ...

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Q: LiF - C6H1206 Al253 - MgBr2 - NH3

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Q: How many atoms are assigned to each unit cell of Hexagonal Close-Packed Crystal Structure?

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Q: 8. A sealed vessel contains 0.25 M COC12, 0.11 M CO, and 0.11 M Cl2 at 668 K, which is an equilibriu...

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Q: v Choose... A solution that contains 0.300 M HF and 0.300 M NaF pH equals the pk A solution that con...

A: pH of buffer solution is calculated by Henderson equation as pH = pKa + log[base]/[acid]  

Q: draw expanded,condensed and skeletal structure of atenolol

A: The correct answer is given below

Q: How do I do the calculation(s) here to determine the information I will need to enter/graph in Excel...

A: The species diagram represents the variation of concentration of different species in a system, with...

Q: Carbon tetrachloride reacts at high temperatures with oxygen to produce two toxic gases, phosgene an...

A: The given chemical reaction is as equilibrium and the reaction is as follows: CCl4(g) + (1/2)O2(g) ⇌...

Q: A reaction is found to be first-order with a rate constant of 0.00125 s–1. If the reaction initially...

A: Given,  Rate constant, k = 0.00125 s-1  Initial concentration, [A]0 = 0.25 M  Final concentration [A...

Q: At a certain temperature, the equilibrium constant K for the following reaction is 7.4 x 10 ": N,(g)...

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Q: What is the concentration of A2+ after 30 drops of 0.400 M A2+ solution is added to 30 drops of wate...

A: Answer: This question will be solved on the basis of the concept that moles of A2+ ion will remain c...

Q: In this particular problem, draw all possible resonance structures on your notebook. Based on your s...

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Q: Gaseous butane (CH,(CH,),CH;) reacts with gaseous oxygen gas (0,) to produce gaseous carbon dioxide ...

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Q: Explain how you would prepare a 100 mL of a 25 ppm NH4-N standard solution using anhydrous ammonium ...

A: 100ml-25ppm NH4-N standard solution using an NH4Cl ASAP 14mg-53.5mg Of NH4Cl  1mg-53.5/14  

Q: The pure D-form of a compound has a specific rotation (D line of sodium, 20° C) of +24°, whereas the...

A: First of all we need to calculate the enantiomeric excess by substracting minor from the major enant...

Q: thermometer A 55.4 g sample of aluminum, which has a specific heat capacity of 0.897 J'g , is put in...

A: Given that, For Al, m=55.4 g, Cp=0.897 J g-1°C-1 ,  T1= ? , T2=20.7 °C  For water, m= 300.0 g, Cp= 4...

Q: Compound Draw in skeletal form (1 as the highest BP and 4 as the lowest SKELATAL/BOND-LINE FORM BP) ...

A: The boiling points of alkanes increase with increasing number of carbons.  the boiling point of an a...