Sodium chloride, the table salt (NaCl) is added in cooking to enhance the flavor of the food.  When 10.0 g of NaCl are added in 200.0 mL of water at 25.0oC in a coffee-cup calorimeter, 669 J of heat are absorbed.  (Assume that there is no change in volume, d=1.00 g/mL, specific heat=4.18 J/g.oC). Evaluate the truthfulness of this statement: "The water absorbed 669 J of heat."  True  False

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Q: What is the work done by a system when it absorbs 47 J of heat and gain 12 J of energy?

A: Since you have posted multiple question, the answer for first question is given below. Kindly repost…

Q: A chemist carefully measures the amount of heat needed to raise the temperature of a 194.0 g sample…

A: Mass of sample = 194 gram Initial temperature = - 8.3℃ Final Temperature , T2 = 4.5 ℃ Change in…

Q: How many grams of water can be heated from 25.0 oC to 75oC using 12500.0 Joules?

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A: The given data contains, A System absorbs 2500 J of heat work =7655 J

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A:

Q: 1) What is the specific heat capacity of an unknown metal if 75.00 g of the metal absorbs 418.6J of…

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

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A: heat capacity = m C ΔT m = 50 g C = 4.18 J/g c ΔT = 55-13 = 42 c

Q: A piece of a mysterious metal has a mass of 455g. It was determined that its heat capacity is 34.3…

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Q: In order to change the temperature of 147 g of lead from 22 o C to 55.oC, how many Joules are…

A: Q = mc∆T Q = heat M = mass C = specific heat capacity ∆T = change in Temp.   M = 147 g ∆T = Tfinal –…

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A: Q = m . s . ∆T

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A: I  Answerd question 2 and it's all part ,  please post next question separately.

Q: Consider the following thermochemical equation for the combustion of acetone, C3H6O, the main…

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Q: The specific heat of an unknown metal is calculated to be 3.74J/g*C. What is the mass of the sample…

A: Answer is explained below.

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A: The heat capacity of the calorimeter is 58.1J/oC

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A: GIVEN:-

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Q: 4) You are told that a chemical reaction is exothermic. How could you test whether the statement is…

A:

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Q: A 15.0-mL sample of benzene at 21.0 °C was cooled to its melting point, 5.5 °C, and then frozen. How…

A: Calculate the mass of benzene from density,

Q: If 0.067 mol of hydrochloric acid  (HCl)  is mixed with 0.067 mol of sodium hydroxide  (NaOH)  in a…

A:

Q: 4. What speed must a 250.0 kg motorcycle be travelling at to have a kinetic energy of 2.8 x 10* J?

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A: According to first law of thermodynamics dU = dQ + dW Where dU is change in internal energy, dQ is…

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A:

Q: What will the final temperature be if a 5.00-g silver ring at 37.0℃ gives off 25.0 J of heat to its…

A:

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A:

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A:

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A:

Q: If 1495 J of heat is needed to raise the temperature of a 357 g sample of a metal from 55.0°C to…

A:

Q: A 15.0-mL sample of benzene at 20.7 °C was cooled to its melting point, 5.5 °C, and then frozen. How…

A:

Q: The ΔE of a system that absorbs 12.4 J of heat and does 4.2 J of work on the surroundings is…

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A:

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A:

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A:

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A: Molar Heat Capacity: The molar heat capacity of a chemical substance is the amount of energy that…

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Q: A 15.0-mL sample of benzene at 21.3 °C was cooled to its melting point, 5.5 °C, and then frozen. How…

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Q: What is the work done by a system when it absorbs 47 J of heat and gain 12 J of energy?

A: