It has been determined that the body can generate 5500 kJ of energy during one hour of strenuous exercise. Perspiration is the body's mechanism for eliminating this heat. What mass of water would have to be evaporated through perspiration to rid the body of the heat generated during 3.0 hours of exercise? (The heat of vaporization of water is 40.6 kJ/mol.)

Q: When a solid dissolves in water, heat may be evolved or absorbed. The heat of dissolution…

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Q: When a solid dissolves in water, heat may be evolved or absorbed. The heat of dissolution…

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Q: Temperature of 150. g of iron increased from 27.1 °C to 33.1 °C after absorbing 406 J of heat, what…

A: Given data,Mass of iron=150gInitial temperature=27.1oCFinal temperature=33.1oCHeat (Q)=406J

Q: A system does 551 kJ of work and loses 236 kJ of heat to the surroundings. What is the change in…

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Q: 39.0 g sample of a metal is heated to 63.0 °C and then dropped into 125.0 g of water in a…

A: Heat absorbed by the substance = m x Cs x ∆T  m = mass of substance Cs = specific heat capacity of…

Q: When a solid dissolves in water, heat may be evolved or absorbed. The heat of dissolution…

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Q: When a solid dissolves in water, heat may be evolved or absorbed. The heat of dissolution…

A: Specific heat capacity is the amount of heat that is required to rise a temperature of 1 kg…

Q: A total of 2.00 mol of a compound is allowed to react with water in a foam coffee cup and the…

A: Given,moles of the compound = 2.00 molmass of the solution = 135 ginitial temperature of the…

Q: When a solid dissolves in water, heat may be evolved or absorbed. The heat of dissolution…

A: Given: mass of CuSO4 = 3.32 g mass of H2O = 113.60 g Temperature change from 23.47 to 26.70 °C heat…

Q: A 1.819 g sample of a new organic material is combusted in a bomb calorimeter. The temperature of…

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Q: A 3.257 g sample of a new organic material is combusted in a bomb calorimeter. The temperature of…

A: Thermodynamics is branch of chemistry in which we deal with amount of heat evolved or absorbed by…

Q: The heat capacity of a calorimeter is calibrated by adding 3.00 mL of water at 40.0°C to the…

A: Heat is released by water at a higher temperature and absorbed by water at a lower temperature.…

Q: When a solid dissolves in water, heat may be evolved or absorbed. The heat of dissolution…

A: As mass of  water = 114.70 g  mass of  CsBr  =  8.81 g  Total mass of solution =  m  =  114.70  +…

Q: A total of 2.00 mol of a compound is allowed to react with water in a foam coffee cup and the…

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Q: A 10.0 g piece of metal is heated to 80.0 ° C and placed in 100 g of 23 ° C water. When the system…

A: Specific heat of metal = 0.37  J g-1 oC

Q: It was determined that: 135 J of heat is required to increase the temperature of 10.0 g of an…

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Q: When a solid dissolves in water, heat may be evolved or absorbed. The heat of dissolution…

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Q: A generic solid, X, has a molar mass of 61.6 g/mol. In a constant-pressure calorimeter, 18.3 g of X…

A: Heat absorbed/ released by a solution can be calculated by usingthe expression:Q = m.Cp.∆T where, m=…

Q: What is the specific heat of the rock?

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Q: When a solid dissolves in water, heat may be evolved or absorbed. The heat of dissolution…

A: We have find out the enthaply of dissolution of MgCl2.

Q: A 2.739 g sample of a new organic material is combusted in a bomb calorimeter. The temperature of…

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Q: A 65.4 g piece of metal that had been submerged in boiling water (100 °C) was quickly transferred…

A: Mass of water, m = 93.0 mL x 1gmL= 93.0 g  Specific heat of water, s = 4.184 J/g °C Change in…

Q: 6. A student is determining the enthalpy of solution for ammonium nitrate by adding ammonium nitrate…

A: The enthalpy of solution, or the heat of solution, is the total amount of heat energy that is…

Q: When a solid dissolves in water, heat may be evolved or absorbed. The heat of dissolution…

A:

Q: A common technique for forming metal electrodes on electronic devices is evaporation in a vacuum. In…

A: The enthalpy of vaporization (Hvap) for gold is 310.9 kJ/mol The molar mass of gold (Au) = 196.97…

Q: Ice at 0.0 °C is placed in a Styrofoam cup containing 381. g of a soft drink at 15.8 °C. The…

A: To determine the mass of ice that has melted, first of all, the energy that has been liberated by…

Q: A hot 101.5 g lump of an unknown substance initially at 157.8 °C is placed in 35.0 mL of water…

A: we have to identify the unknown substance

Q: When a solid dissolves in water, heat may be evolved or absorbed. The heat of dissolution…

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Q: 1.5 L of water is heated from 22.4°C to 98.5°C to make a cup of tea. How much heat in megajoules…

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Q: When a solid dissolves in water, heat may be evolved or absorbed. The heat of dissolution…

A: The enthalpy of dissolution at constant pressure is the enthalpy change associated with dissolution…

Q: A common technique for forming metal electrodes on electronic devices is evaporation in a vacuum. In…

A: Given Data: The enthalpy of vaporization (ΔHvap) for gold = 310.9 kJ/mol given mass of  liquid gold…

Q: 26 kJ of work and loses 216 kJ of heat to the surroundings. ge in internal energy, AE, of the…

A: First law of thermodynamics is based on conservation of energy

Q: In a calorimetric analysis, 2.42 g of potassium chloride is weighed. The heat of solution of this…

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Q: A metal object with mass of 24.9 g is heated to 97.0 ∘C and then transferred to an insulated…

A: Heat = mass of substance X specific heat X temperature change

Q: When a solid dissolves in water, heat may be evolved or absorbed. The heat of dissolution…

A: Given:mass of CuCl2 = 3.88 gmass of H2O = 101.30 gTemperature change from 22.80 to 26.19 °Cheat…

Q: When a solid dissolves in water, heat may be evolved or absorbed. The heat of dissolution…

A: Answer: Given that: Heat capacity of calorimeter C=1.83J/°C Increase in temperature of calorimeter…

Q: As a system increases in volume, it absorbs 52.0 J of energy in the form of heat from the…

A: Work done (w) can be calculated as follows, 1 L atm = 101.3 J