NB Assume the densities of all solutions are 1.0 g/mL and their specific heat capacities 4.184 J/g .K Molar Mass of KCl: 74.55 g/mol Help from calculating qr to average ethalpy.

Q: For an ionic compound dissolving in water, AHsoln = -56 kJ mol 1 and the hydration energy is -894 kJ…

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Q: If 110.1 mL of water is shaken with oxygen gas at 2.5 atm, it will dissolve 0.0041 g O2. Estimate…

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Q: 1. Why does the temperature of a boiling liquid remain constant when heat is continuously being…

A: Every substance has a definite boiling point. When a liquid is heated, then at a particular…

Q: Which molecule would you expect to be more soluble in water: CCl4 or CH2Cl2 ?

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Q: A generic solid, X, has a molar mass of 61.8 g/mol. In a constant-pressure calorimeter, 18.6 g of X…

A: Answer:- This question is answered by using the simple concept of calorimetry which states heat lost…

Q: a) Are there any intermolecular forces (IMF's) between water molecules and cyclohexane molecules?…

A: “Since there are multiple questions in this question and it is not mentioned that which one has to…

Q: A student determines the heat of dissolution of solid cobalt(II) sulfate using a coffee- cup…

A: Given the mass of water inside the coffee-cup calorimeter = 105.00 g  Mass of the solute, cobalt(II)…

Q: Vhat would the strongesSt a. CHCI3 b. KF in water c. CF4 d. CH3NH2 hoices of answers:(type disp for…

A: The strongest intermolecular attractive forces: a. CHCl3 - dd

Q: A mixture consists of 78,1 g benzene (C6H6) and 92,1 g toluene (C7H8). Both substances are volatile,…

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Q: What is the heat of hydration (∆Hhydration) ? How does theenthalpy of solution depend on the…

A: The heat of hydration has to be defined and how enthalpy of solution depend on the relative…

Q: Dissolving 3.0 g of CaCl2(s) in 150.0 g of water in a calorimeter at 22.4 °C causes the temperature…

A: Mass Of CaCl2 = 3 g Mass of water = 150 g Initial temperature = Ti = 22.4°C Final Temperature = Tf =…

Q: What is the boiling point of the automobile radiator fluid prepared by mixing 1.02 L of ethylene…

A: Numerical based on elevation in boiling point.

Q: A mixture consists of 78,1 g benzene (C6H6) and 92,1 g toluene (C7H8). Both substances are volatile,…

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Q: 4. Why do things mix. What law of thermodynamics governs this behavior. Discuss mixing of polar and…

A: The dissolution of a specific mass of the solute in suitable solvent results in the formation of a…

Q: In a calorimeter, 100.0 g of water, initially at 21.8 *C, is mixed with 0.300 moles of LiOH. After…

A: Given:Mass of water=100 gMoles of LiOH=0.300 molesInitial temperature=21.8oCFinal temperature=38.7oC

Q: A generic solid, X, has a molar mass of 75.0 g/mol. In a constant-pressure calorimeter, 18.8 g of X…

A: Mass of solid = 18.8 g molar mass of solid = 75.0 g/mol mass of water =303 g temperature (T1) =…

Q: How much energy is required to vapourize 158 g of butane (C4H10) at its boiling point if its AvapH…

A: Given,  Mass of butane = 158 g  Molar mass of butane = 58.12 g ∆Hvap = 24.3 KJ/mol

Q: The dissolution of CaCl,(s) in water is exothermic, with AHgoln = -81.3 kJ/mol. If you were to…

A: ΔHsol. = -81.3 kJ/mol 1 m solution means 1 mole of CaCl2 in 1 kg of water. Mass of 1 mole of CaCl2 =…

Q: A generic solid, X, has a molar mass of 69.9 g/mol. In a constant-pressure calorimeter, 47.9 g of X…

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Q: 2.503 g of ammonium chloride NH4CI are added to a calorimeter cup containing 25.30 g of water at…

A: ∆Hdissolution = -qsolution Heat loss by the solution,  q = m. c . ∆T m is the mass of water c is…

Q: A solution is formed from dissolving 1 mole of Al(NO3)3 into enough water to have a total volume of…

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Q: If 94.0 g of ice (ΔHfus = 6.02 kJ/mol, at exactly 0°C) is added to a 240.-mL glass of room…

A: Total heat consumed by ice to melt is calculated as shown below where Qw is the total heat, ΔHfus is…

Q: Argon makes up 0.93% by volume of air. Calculate its solu-bility (mol/L) in water at 20°C and 1.0…

A: Henry's law It states that the amount of a gas dissolved in a solution is directly proportional to…

Q: heat absorbed or lost, in J,  by the water = 5.89 j 1.  a. The heat transferred from/to the NH4NO3…

A: a)  Entropy is defined as the measure of disorder or randomness of system entropy. It  is a…

Q: 1. Calculate the numbers of moles of air trapped at 5°C. Assume the vapour pressure of water at this…

A: Solution :    Partial pressure is defined as the pressure exerted by each gas when more than one gas…

Q: A generic solid, X, has a molar mass of 61.8 g/mol. In a constant-pressure calorimeter, 18.6 g of X…

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Q: You are handed a 15.85% by mass aqueous KCl (m.m. = 74.5513 g mol–1) solution (at 25 °C). Assume the…

A: Given,  Mass percent of KCl in solution = 15.85%  Molar mass of KCl = 74.5513 g/mole  Density of the…

Q: It sodium perchlorate is soluble in water. When 7.41 g of NaCIO4 is dissolved in 108.00 g of water,…

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Q: Which has the greatest vapour pressure at 25°C? SiO2 CO2 H2O

A: At constant temperature, vapor pressure depends on the intermolecular forces. Vapor pressure will be…

Q: A mixture consists of 78,1 g benzene (C6H6) and 92,1 g toluene (C7H8). Both substances are volatile,…

A: Boiling point is defined as the temperature at which the vapor pressure of the liquid becomes equal…

Q: Will liquid formaldehyde CH2O dissolve in ethanol CH3CH2OH? Draw a lewis structure for both…

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Q: 1. Calculate the molar heat of solution, AsolnH, for ycur salt. .

A: Given data: Mass of salt = 2.2 g Initial temperature T1 = 19.5o C Final temperature T2 = 29.5o C…

Q: Explain and sketch the Born-Mayer equation to determine the crystallization energy of NaCl and MgCl2

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Q: Does the entropy of the system increase, decrease, or stay the same when a solid sublimes?

A: Entropy is the measure of randomness. When the randomness increase entropy increases.

Q: Calculate the molarity of a 3.24 molal aqueous RbCl solution with a density of 1.12 g/ml. Use a…

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Q: A generic solid, X, has a molar mass of 82.3 g/mol. In a constant-pressure calorimeter, 46.1 g of X…

A: Given phase change reaction;  X(s) ----->  X(aq) amount of solid X  to be dissolve in water =…

Q: calculate boiling temperature of CCl4 dissolved in cyclohexane. 0.150 mol CCl4 was dissolved in 987…

A: Boiling point elevation: Tb - Tbo = i x kb x m  Tb - 80.7 = 1 x 2.79 x (0.150/0.987) Tb - 80.7 =…

Q: Which statement best describes the differences in the melting temperatures (Tm) of CaO and MgO?

A: Tm(MgO)>Tm(CaO): Stronger ionic forces due to smaller distance between the ions (size) This is…

Q: Calculate AHfus of ethanol having a normal freezing point at - 177.3 °C and molal freezing- point…

A: Given: Freezing point = -177.3oC Molal freezing point constant = 1.99 K m-1 Molar mass of ethanol =…

Q: 15. Determine the heat of solution in kj / mole of solute for 5.00 of KBr dissolved in 95.00 grams…

A: Given: Mass of KBr is 5 g. Mass of water is 95 g. Specific heat of solution is 4.18 j/g °C.  The…

Q: الإنجليزية Q 3/ Rank the following elements in terms of the strength of the polar correlation from…

A: NOTE: please note according to our policies , we can only answer one question at one time. you have…

Q: Exlapin why ethanol (C2H5OH) is not soluble in cyclohexane (C6H12)

A: Given molecules: Ethanol and cyclohexane

Q: A student determines the heat of dissolution of solid ammonium chloride using a coffee-cup…

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Q: A generic solid, X, has a molar mass of 58.9 g/mol. In a constant-pressure calorimeter, 30.9 g of X…

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Q: A constant pressure calorimeter contains 286 g of water at 20.0 °C. A 13.41 g of substance X (molar…

A: The heat released q = m*s*∆T where m = mass of water, s = specific heat, ∆T = temperature change

Q: The hydration of a hydrocarbon, but-2-ene, CAHS produces butan-2-ol, C4H100 as follows: Penghidratan…

A: Th enthalpy change of the reaction is equal to the sum of the energies of the different steps. The…

Q: The heat of solution of potassium acetate (KC2H3O2) in water is -15.30 kJ/mol. If 15.90 g of…

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Q: first-aid hot packs, giving off heat when dissolved in water. A coffee-cup calorimeter at 25ºC…

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Q: The normal freezing point of n-octane 1C8H182 is -57 °C. In what temperature range is it a…

A: The importance of Gibbs energy is that it gives information about the spontaneity of the reaction or…