A person ate 0.50 pound of cheese (an energy intake of 4000 kJ). Suppose that none of the energy was stored in his body. What mass (in grams) of water would he need to perspire in order to maintain his original temperature?

Q: Consider these reactions: Reaction 1: H2(�)+Cl2(�)⟶2HCl(�)Δ�=−184.6 kJ  Reaction 2:…

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Q: Consider these reactions: Reaction 1: H2 (g) + Cl2 (g) → 2HCI(g) AH = -184.6 kJ %3D Reaction 2: 20F2…

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Q: A piece of metal with mass 20.00 g at room temperature [25.0oC] was heated up to 90.0oC. This metal…

A: a) The amount of heat water gained is given by Q as Q = mCΔT where m = mass of water = density X…

Q: The complete combustion of salicylic acid releases 21.90 kJ of energy per gram of salicylic acid. In…

A: We have to calculate the energy of combustion per gram of unknown compound.

Q: arriors arrives at a blacksmith to get new weapons 1.74 kg of iron at 1371 °C, which was cooled down…

A: Suppose, the final temperature of the iron longsword is t°C.  At equilibrium, both the iron and…

Q: The decomposition of 10.0 g of ammonia requires 27,200 J of energy to give hydrogen and nitrogen…

A: Heber process: It is the industrial technique to produce ammonia from nitrogen and hydrogen gas. The…

Q: Metal A has a heat capacity of 0.450 J/g°C while metal B has a heat capacity of 1.250 J/g° C. If…

A: The specific heat capacity of a substance is the amount of heat required to raise the temperature of…

Q: If 1.42 kcal of energy is required to raise the temperature of a 190 g sample of pure iron, by how…

A: Q - heat = 1.42 Kcal m - mass = 190 g C - specific heat =0.45 J/g-°C ΔT - change/rise in temperature…

Q: When a cold 100 g iron bar was placed into a water bath, the temperature of the bath decreased by…

A: Here we are required to heat was transferred to iron bar.

Q: a sheet of gold weighing 8.4g and at a tempearture of 14.2 C is placed flat on a sheet of iron…

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Q: Consider the following two reactions: 2 Fe(s) + O₂(g) → Fe₂O3(s) ▲„Hº = -206 kJ/mol 2 3 Fe(s) + 2…

A: The given reactions are 2 Fe(s) + 32 O2(g) →Fe2O3(s), ∆rH°= -206 KJ/mol. 3 Fe(s) + 2 O2(g)…

Q: A student dissolves 12.7 g of sodium chloride (NaCl)in 250. g of water in a well-insulated open cup.…

A: It is based on the concept of enthalpy of  dissolution of salt Here we  are  required to find the…

Q: Consider these reactions: Reaction 1: H2 (g) + Cl2 (g) 2HCI(g) AH =-184.6 kJ %3D Reaction 2: 20F2(g)…

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Q: Consider the combustion of liquid C₅H₈ in oxygen gas to produce carbon dioxide gas and water vapor.…

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Q: The human body can get energy by metabolizing proteins, carbohydrates or fatty acids, depending on…

A: Given : The energy content of food is roughly proportional to the carbon content. Hence we can say…

Q: When 0.850 g of C was burned in oxygen in a constant volume calorimeter, 27.9 kJ of energy as heat…

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Q: It has been determined that the body can generate 5500 kJ of energy during one hour of strenuous…

A: Heat during exercise is responsible for evaporated water

Q: When 0.900 g of Mg was burned in oxygen in a constant volume calorimeter, 22.3 kJ of energy as heat…

A: Given:  Mass of Mg = 0.900 g  Heat evolved = 22.3 kJ  Mass of water in container = 880. gm  Initial…

Q: Think about the metals aluminum and magnesium and the ions they form. Why might one metal be more…

A: Considering Aluminium and magnesium: The atomic number of Mg=12 Electronic configuration: 1s2 2s2…

Q: A student dissolves 12.1 g of lithium chloride (LiCl)in 300. g of water in a well-insulated open…

A: Mass of lithium chloride = 12.1 g Initial temperature, T1 = 21.0 °C Final temperature, T2 = 27.8 °C…

Q: A 20 g sample of dry ice (CO₂(s)) is placed in a glass flask and a stopper is tightly placed in the…

A: Given :-  Mass of CO2 = 20 g  Heat energy is transferd into the flask = q = + 350 J   change in…

Q: 6. How much work is needed in a system to expand from 25 to 50 L against a pressure of 7 atm? Is…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: 19. Ice at 0 °C is placed in a Styrofoam cup containing 361 g of a soft drink at 23.0 °C. Some ice…

A: According to the simple concept of calorimetry which states that heat lost is equal to the heat…

Q: The enthalpy of reaction is −2202.0 kJ/mol. How much energy (in joules) will be released if 61.95…

A: Energy released = number of moles × molar enthalpy of combustion

Q: It has been determined that the body can generate 5500 kJ of energy during one hour of strenuous…

A: Latent heat of vaporization is defined as the heat required to vaporize 1 gram of liquid to 1 gram…

Q: The energy content of food is typically determined using a bomb calorimeter. Consider the combustion…

A: Given: Mass of sample of butter = 0.48 g Heat capacity of calorimeter = 2.67 kJ/°C Temperature of…

Q: Exactly 46.33 kJ of heat is transferred to a 1.389 kg slab of nickel at a temperature of 12.7°C. (a)…

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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: Consider the following reaction between nitrogen and hydrogen gases.   N2(g) + 2H2(g) → N2H4(g) ΔH…

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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 piece of an iron metal of unknown mass is heated to 325.9 o C and then placed in a styrofoam…

A: Given, Initial temperature of iron = 325.9 °C Volume of water = 225.2 mL Initial temperature of…