Find ΔH, ΔE, q, and w for the freezing of water at -10.0 °C. The specific heat capacity of ice is 2.04 J/g # °C and its heat of fusion (the quantity of heat associated with melting) is -332 J/ g.

Q: CaCl2 (MM = 110.98 g/mol) is used as road salt in the winter to minimize the accumulation of ice on…

A: On adding dissolving CaCl2, the temperature will change from initial value. Heat absorbed by water…

Q: When a 8.00 g sample of KCI is dissolved in water in a calorimeter that has a total heat capacity of…

A: Given : Mass of KCl dissolved = 8 g Total heat capacity of calorimeter = 6.15 KJ/K And change in…

Q: Define molar heat capacity. O the quantity of heat required to change a system's temperature by 1°C…

A: Molar heat capacity is defined as the quantity of heat required to raise the temperature of one mole…

Q: Consider the dissolution of CaCl2: CaCl2 (s) → Ca²+ (ag) +2 Cl¯(ag) AH=-81,5 kJ An 11.8-g sample of…

A: When a solute is dissolved in solvent to form a solution is called dissolution. It measures the…

Q: When a 5.00 g sample of KBr is dissolved in water in a calorimeter that has a total heat capacity of…

A: We know that, ΔH = -Ccal x ΔT where Ccal is the heat capacity of the calorimeter and ΔT is the…

Q: A 100. mL sample of 0.100 M HC1(ag) solution is added to 100. mL of 0.200 M NH3(ag) in a coffee-cup…

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Q: Predict the sign of the enthalpy change for the following processes. Give a reason for your…

A: Hello. Since the question contains multiple subparts, the first three parts are solved. In case the…

Q: The following chemical equation, ΔΗ C (graphite, s) + 2 O2 (g) → CO2 (g) - 393. 5 kJ / mol - Is an…

A: Given reaction,         C(graphite, s)  +  2 O2(g)  →  CO2(g)    ∆H  =  - 393.5 kJ/mol

Q: The complete combustion of 0.691 g of a snack bar in a calorimeter (Ccal = 6.15 kJ/°C) raises the…

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Q: When 5.40 g of a solid mixture composed of NH4Cl and CaCl2 was dissolved in 100.0 mL of water, the…

A: Given Mass of NH4Cl = 1.78 g Mass of CaCl2 = 3.26 g

Q: 2. Calculate the molar heat capacity of rhodium, in J/mol.°C, given a specific heat of 0.244…

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Q: 2. Many manufactures produce hydrogen gas from methane gas, as in the reaction below. This reaction…

A: First we will calculate the number of moles in 2.50 kg and then calculate the amount of heat…

Q: Nitric acid can be formed in two steps from the atmospheric gases nitrogen and oxygen, plus hydrogen…

A: The first chemical equation is, N2g+3H2g→2NH3g       ∆H=-92 kJ......(1) The second chemical equation…

Q: How much energy is required to change the temperature of 15.0 g Fe from 18.5oC to 56.8oC? The…

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Q: 1. When 2.00 grams of solid sodium hydroxide dissolves in 100.0 ml of water in a coffee-cup…

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Q: When a system gives off heat and does not work on its surroundings, delta E is always(

A: According to the First law of thermodynamics,  ∆E = q + W Here, q = Heat released or absorbed.…

Q: The heat of formation of H2SO4 is -909.27 kj/mol. Give the thermochemical equation for the formation…

A: Here we are required to show the formation of aqueous sulphuric acid

Q: Consider the decomposition of liquid benzene, C6H6 (), to gaseous acetylene, C2H2 (g) C6 H6 (1) →…

A: a) When a chemical reaction is reversed, the sign of enthalpy change of reaction also get reversed…

Q: Heating a 25.0 g sample of each substance below with 375 J of energy will cause which substance to…

A: To Solve this problem we will use the formula   Q = mc∆t  Where ,  Q = heat abosbed or released  m =…

Q: calculate the amount of heat (in J) necessary to raise the temperature of 23.9 g benzene by 27.0 °C.…

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Q: Consider the following reactions :- C(s) + O,(g) → CO,(g) + x kJ 1 CO(g) + O2(g) – CO{(g) + y kJ 2…

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Q: mass

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Q: 2. If a 50g sample of water at a temperature of 100°C is added to 25g sample of water at 25°C, what…

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Q: When 108 g of water at a temperature of 23.1 °C is mixed with 66.1 g of water at an unknown…

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Q: When 4.88 g of a solid mixture composed of NH4CI and CaC2 was dissolved in 100.0 mL of water, the…

A: When another component is added to a liquid (a solvent), the boiling point of the liquid (a solvent)…

Q: A bomb calorimetry experiment is performed with xylose, CSH10O5 (S), as the combustible substance.…

A: Given data, Initial calorimeter temperature T1 = 23.29 C° Final calorimeter temperature T2 = 27.19…

Q: The standard enthalpy change for the following reaction is-135 kJ at 298 K. C(s,graphite) + 2…

A: Given : standard enthalpy for reaction  C(s) + 2 Cl2 (g) = CCl4 (l) is = - 135 KJ To find : standard…

Q: (a) FeCl, NABH., ELOH (b) then H,O* КОН (c) OMe H,0 Br heat (d) NaOCH; heat (e) NBS, AIBN heat (f)…

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Q: The complete combustion of 0.651 g of a snack bar in a calorimeter (Ccal = 6.15 kJ/°C) raises the…

A: Given information:Mass of a snack bar = 0.651 gTemperature = 1.65 °CCcal = 6.15 kJ/°C

Q: A sample of carbon is burned in a calorimeter. if the calorimeter absorbs 94 J/K during the reaction…

A: Heat absorbed by the calorimeter = + 94 J.K-1 Heat absorbed by universe i.e. heat released by…

Q: When salt (NaCI) is dissolved in water, the molar enthalpy of solution (AHsol) is +3.9kJ/mol. If 40g…

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Q: Using the reactions below, determine the enthalpy of the following reaction 1 g S8(s) + 02(g) →…

A: Enthalpy of a chemical reaction can be calculated from the heat of the given reactions.

Q: At 850°C, CaCO3 undergoes substantial decomposition to yield CaO and CO2. Assuming that the ∆H°f…

A: Standard enthalpy of formation of CaCO3 (s) = -1207 KJ/mol Standard enthalpy of formation of CaO (s)…

Q: At 850°C, CaCO3 undergoes substantial decomposition to yield CaO and CO2 Assuming that the ΔH°f…

A: The balanced chemical equation is given below, CaCO3(s)→CaO(s)+CO2(g) To calculate  ΔH°f values. Add…

Q: When 5.49 g of a solid mixture composed of NH,Cl and CaClz was dissolved in 100.0 ml of water, the…

A: Given that -  Mass of mixture of NH4Cl and CaCl2 = 5.49 g  Volume of water = 100 mL  Increase in…

Q: An unknown sample of coal is burned in an apparatus with a calorimeter constant of 1.62 kJ/°C. When…

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Q: The standard enthalpy change for the following reaction is -92.2 kJ at 298 K. N2(g) + 3 H2(g)→2…

A: standard enthalpy change for the reaction is given as, ΔHrxn = -92.2 KJ  Since the enthalpy change…

Q: 2. A sample of nickel is heated to 99.8°C and placed in a coffee cup calorimeter containing 150.0 g…

A: Nickel  Heat lost by Nickel =q lost  Mass of Nickel = m = ..........? Initial temperature of Ni = T1…

Q: A 80.8 g chunk of granite (specific heat: 0.79 J/g°C) is heated to 225.7 °C and dropped into a…

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Q: The heat of combust ion of ethanol, C2H5OH(l), is-1367 kJ/mol. A batch of Sauvignon Blanc wine…

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Q: One origin of SO3 is the combustion of sulfur, which is present in small quantities in coal. S (5) +…

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Q: 4) Which of the following (with specific heat capacity provided) would show the smallest temperature…

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Q: In a calorimetric experiment, 6.24 g of lithium hydroxide, LIOH, was dissolved in water. The…

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Q: An unknown sample of coal is burned in an apparatus with a calorimeter constant of 0.8 kJ/°C. When a…

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Q: The standard enthalpy change for the following reaction is -641 kJ at 298 K. Mg(s) + Cl2(g)…

A: From given data we need to calculate the enthalpy change for reverse of the given reaction. As the…

Q: NO3KNO3 is dissolved in 229 g of water at 23.00 °C.   KNO3(s)−→−−H2OK+(aq)+NO−3(aq)   The…

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Q: The specific heat capacity of copper is 0.384 J/g⋅°C. What is the molar specific heat capacity of…

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Q: When 5.28 g of a solid mixture composed of NH4Cl and CaCl2 was dissolved in 100.0 mL of water, the…

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Q: An unknown sample of coal is burned in an apparatus with a calorimeter constant of 0.75 kJ/°C. When…

A: Given:  Calorimeter constant(C)= 0.75 KJ/°C  Mass of sample(m) = 0.412 gm  Increase in temperature…

Q: Cold packs (like the kind used by athletes to treat sprains and other minor injuries) rely on the…

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