A student attempts to determine the molecular weight of an unknown liquid with a boiling point of 79.6°C, using the method of lowering the boiling point. naphthalene freeze. Explain why you were unable to determine its molecular weight.

Q: A chemistry student weighs out 0.0690 g of hypobromous acid (HBrO) into a 250. mL volumetric flask…

A: Given: Mass of HBrO = 0.0690 g. And concentration of NaOH = 0.1700 M

Q: This picture shows A) an insoluble ionic solid B) a partially soluble ionic compound C) a fully…

A: A compound is said to be soluble if it is distributed homogeneously when it is dissolved in a…

Q: A solution was prepared by dissolving 12.0 g of glucose (180 g/mol) in 150. mL solution. What is the…

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Q: A 921.3 g sample of methane goes through a temperature change of -14.44 °C. The specific heat…

A: The heat involved in the changing the temperature of any sunatance is given by formula - Q = m S ΔT.…

Q: A 25 mL sample of Ca(OH)2 was analyzed with a 0.10 M HCl standard. If 30 mL of the acid standard…

A:

Q: Show how you would accomplish the following with good yield: NH2 .NH O a) b) Ph-COOH Ph-ċ-o-ĉ-CH3 H…

A: a. N- formylation. b. acid FG to anhydride FG using P2O5. c. Fischer esterification. d.  Fischer…

Q: Which of the following phase diagrams corresponds to a system wherein boiling occurs before the two…

A: The phase diagram corresponds to a system where boiling occurs before the two liquids are Fully…

Q: mixed in aqueous solution. If no rea sure to include the proper phases for

A: Balanced chemical reaction  Li2SO4(aq.) + Ca(NO3)2(aq.) ---> CaSO4(s) + 2LiNO3(aq.) Complete…

Q: What is the basis in the simplified determination of the van't Hoff factor of electrolytes? O…

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Q: g sample of copper eases 793./ Joules eat. The specific heat capacity of copper is 0.385 J/(g.°C).…

A: Specific heat capacity is amount of heat needed to increase the temperature of one gram of substance…

Q: A 25.30 mL sample of 0.0897 M HCl is titrated with 0.111 M NaOH. Determine the pH of the solution…

A: Given: Volume of HCl = 25.30 mL Molarity of HCl = 0.0897 M  Molarity of NaOH = 0.111 M Volume of…

Q: How does hydronium ion concentation relate to electrode potential in potentiometry? a. As…

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Q: When CH3(OH)2 is dissolved in water, how many particles are in the solution?

A: It is Ca(OH)2 Number of particles depends upon nature of electrolytes  Strong electrolytes…

Q: Enter your answer in the provided box. Given the following data, 2+ 2H3²*(aq) + 2e → Hg2"(aq) E° =…

A: The relation between ΔG° and E°cell in an electrochemical reaction is given by - ΔG° = - nFE°cell

Q: Construction of a voltaic cell Consider a iron-silver voltaic cell that is constructed such that one…

A: At anode , oxidation takes place and at cathode reduction takes place.

Q: For the following reaction, AP(C6H14VAt was found to be -6.2 x 10-3 atm/s. COHA(@) → C6H6(g) +…

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Q: In the phase diagram of water, where is the solid-liquid boundary? 218- E B 0.006- A 0.01 100 374…

A: We have to predict the boundary.

Q: Suppose that at some initial time all the molecules in a container have the same translational…

A: Given that, the translational energy is is E = 2.0×10-14 ergs. We have to calculate the final…

Q: Adenoie osphate (ATP) SAdnyionine SAM) What is the role of each reactant in the reaction above? What…

A: Question is that, what is the role of the reactant.? 1. In the first step reaction, triphosphate…

Q: Which balanced redox reaction is occurring in the voltaic cell represented by the notation of…

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Q: In the phase diagram of water, where is the liquid-vapor boundary? O c O B O A OD

A: Ans : A ( On OA curve the liquid and vapor at equlibrium). see below.

Q: 218- E B 0.006- A 0.01 100 374 Temperature (°C) vap(atm)

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Q: stion 11 Based on the graph, what is the estimated number of theoretical plates of the fractional…

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Q: What is the ΔHfus of ethanol (46.06 g/mol) which has Kb of 1.99 and freezes at -117.3 °C?     3.72…

A: Answer: Relation enthalpy of fusion and Molal depression constant is shown below: ∆Hf=MRTf21000Kf…

Q: What is the molarity of 2.19 mol of NaCl dissolved in 700.0 mL of solution?

A: Given that :-  Moles of NaCl = 2.19 mol  Volume of solution = 700 mL   Volume of solution = 0.700 L…

Q: A first-order reaction is 40.0% complete at the end of 39.1 minutes. What is the value of the rate…

A: Given reaction is 40% completed hence remaining concentration is 60%

Q: As a result of alpha emisslon, the product nucleus is Mutple Choice two atomic numbers higher than…

A: Alpha particle has two units of positive charge and four units of mass (α24).

Q: 3. Convert the following perspective drawing into Newman projections by looking along the bond as…

A: Note : Put dashed bonds left side on Newmann projection. Put wedge bonds right side on Newmann…

Q: Identify all the functional groups present in Viracept. HO N. OH Viracept Used in the treatment of…

A: The various functional groups present in the given molecule are shown by circles as follows-

Q: He+ Al → n+ 2 13 01:23:26 Multiple Choice 16 31 14 to 15 3 14 30 15 Next> 20 of 35

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Q: Methane and water react to form carbon monoxide and hydrogen, like this: CH,(0)+ H,O(9) - CO(g)+…

A: CO = 71  mmol H2 = 213 mmol

Q: Balance the following equation 2 cuci(aq) + H;S(g) - - Cu,S(s) + a. How many moles of copper(1)…

A: Recall the reaction, CuCl + H2S ------> Cu2S + HCl  Molar mass of Cu2S = 159.16 g mol-1 Molar…

Q: Consider the reaction. %23 H :Br: CH3 Н— Br: H -C C -CH3 + H H H H Add curved arrows for the first…

A: Note : 1-Propene reacts with proton produces the carbocation and bromine anion. (see below).

Q: Write the balanced NET ionic equation for the reaction when aqueous BaCl, and aqueous (NH,),SO̟ are…

A: • Aqueous barium chloride on reaction with aqueous ammonium sulphate gives aqueous ammonium chloride…

Q: 5. What volume will 400. mL of SO3 at 0°C and 760 mm Hg occupy at 110. °C when the pressure remains…

A: 5.  Given :- initial volume = 400. mL  Initial temperature = 0°C  Final temperature = 110.°C…

Q: Serine esterase contains a catalytic triad at its active site. Which amino acid in serine esterase…

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Q: Calculate Kp for the reaction 2NOCIig) = 2NO(gi + Clzla) at 400'C if K- at 400°C for this reaction…

A: Which one of the following options is correct

Q: In the laboratory, a general chemistry student measured the pH of a 0.544M aqueous solution of…

A: Given :-  Initial concentration of aqueous solution of acetic acid = 0.544 M  pH of solution = 2.488…

Q: A 340.9 g sample of silver is subjected to a temperature change of -34.29 °C. The specific heat…

A: Note : Since you have posted multiple questions, we are entitled to answer the first only. Please…

Q: H,C-g-S-CH b. H3C NH2 a. Crus th

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Q: Use the data given here to calculate the values of AGan at 25 'C for the reaction described by the…

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Q: The vapor pressure of pure CCl4 at 65oC is 504 mmHg. How many grams of naphthalene (C10H8) must be…

A: Given- Vapour pressure of pure CCl4=504 mmHg Weight of CCl4= 25.00 gram  Vapour Pressure of solution…

Q: Meo OMe NMe

A: We have to carry out the given transformation.

Q: Identify the major aldol condensation product obtained when the following compound is heated in the…

A: Given compound is pentanal  And it has aldehyde functionality. It is a base catalyst reaction.…

Q: List the number of protons, neutrons, and nucleons (protons + neutrons), in that order, for an…

A: Given:

Q: Question number 6 Calculate the concentration (molarity) of CH,NH, in a solution that is 0.0614 M…

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Q: The half-life decreases with time for the reaction aA =>bB , which is:  a)zero order in A b)first…

A: Half life of second order reaction is inversely proportional to initial concentration

Q: In mining, roasting is the oxidation of metal sulfides to produce metal oxides and sulfur dioxide, a…

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Q: Find the molality of a solution made by adding 9g of NaOC| to 4000g of water, (MW: Na=23, CI=35)

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Q: This refers to a point wherein both liquid phases have the same composition. Hence, extraction is…

A: Answer: This question is based on the Liquid-liquid extraction where certain terms are used to…

Solutions

Solutions can be considered as homogeneous mixtures which contain two or more than two chemical substances. The chemical substance which is the greater part is defined as solvent. And the chemical substance that is dissolved in a solvent is referred to as solute. Solution chemistry plays an important role in chemistry since it supports many commercial applications of solutions.