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

Q: A student wishes to determine the heat capacity of a coffee-cup calorimeter. After mixing 125 g of…

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

Q: Sodium chloride is added in cooking to enhance the flavor of food.  When 10.0 g of NaCl is…

A: Given that 669 J of heat is absorbed. q = +669 JAs heat is absorbed in the reaction from water in…

Q: A cubic piece of platinum metal (specific heat capacity = 0.1256 J/°C g) at 200.0°C is dropped into…

A: Answer: This question is based on the conservation of energy which suggests that energy lost by…

Q: 3. When 0.050 mol of HCl is reactd with 0.050 mol of NaOH in 50.0 mL of water, the temperature of…

A: The heat of a system can be given as :

Q: What is the amount of heat (value of q) when 22.8 g of gold is heated from 20.0℃ to 425℃? The…

A: Specific Heat capacity: The amount of heat required to increase the temperature of one gram of a…

Q: 5. What is the mass of the water in a coffee cup calorimeter if the initial temperature is 29.2°C…

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Q: heat capacity

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Q: In a coffee-cup calorimeter, 140.0 mL of 1.3 M  NaOH and 140.0 mL of 1.3 M  HCl are mixed. Both…

A: In this whole process, the heat given out by the reaction is gained by the solution and as a result,…

Q: In a coffee-cup calorimeter, 120.0 mL of 1.4 M NaOH and 120.0 mL of 1.4 M HCl are mixed. Both…

A: coffee-cup calorimeter, 120.0 mL of 1.4 M NaOH and 120.0 mL of 1.4 M HCl are mixed. Therefore, Total…

Q: When 20.0 g of aqueous solution B(aq) at 22.0°C is added to 60.0 g of aqueous solution A(aq), also…

A: Given that,The mass of the aqueous solution of B is 20.0 g.The mass of the aqueous solution of A is…

Q: To make the perfect cup (approximately 252.6 mL) of hot chocolate, you are searching for a…

A: The mass of the 252.6 mL of chocolate, having a density of 1.06 g/mL, is;…

Q: You have set up a calorimeter using 50 mL (50 g) of water. When performing a chemical reaction with…

A: Given: mass of water = 50 g initial temperature , T1 = 25.0°C Final temperature, T2 = 50.0°C  ∆T =…

Q: What is the final temperature when 77.4 g of water at 72.7°C is mixed with 28.1 g of water at…

A: Given: Mass of water at 72.7°C= 77.4 g Mass of water at 32.7°C= 28.1 g

Q: A 63.5-g piece of an unknown metal is heated to 92.40°C and quickly added to 100.0 g of water in a…

A: Given, mass of unknown metal, mu=63.5 g initial temperature of metal, Tiu=92.40°C mass of water,…

Q: When 23.6 g of calcium chloride, was dissolved in water in a constant-pressure calorimeter, the…

A: Given, Mass of CaCl2 = 23.6 g Initial temperature, Ti = 25.0 oC Final temperature, Tf = 38.7 oC Heat…

Q: 3.24 g of a piece of a metal is initially at 83.0°C. It is dropped into a coffee cup calorimeter…

A: Recall the following expression according to Law of calorimetry       Q=m×C×∆t Mass of metal=3.24…

Q: In a coffee-cup calorimeter, 120.0 mL of 1.1 M NaOH and 120.0 mL of 1.1 M HCl are mixed. Both…

A: Given, In a coffee-cup calorimeter, 120.0 mL of 1.1 M NaOH and 120.0 mL of 1.1 M HCl are mixed. Both…

Q: What is the heat of a reaction, in joules, with a total reaction mixture volume of 69.0 mL if the…

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Q: During a reaction, the temperature of the solution in a coffee cup calorimeter increased by 8.6…

A: Heat of reaction (qreaction ) is given by the formula  q = ms(dT) where m = mass of sample s =…

Q: Historically, naphthalene was used as the main ingredient in mothballs and is easily recognized by…

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Q: A 4.81 g sample of an unknown salt (MM = 116.82 g/mol) is dissolved in 150.00 g water in a coffee…

A: Given, Mass of unknown sample ,ms=4.81 g  mass of water, mw= 150 g initial temperature Ti=23.72°C…

Q: In a coffee-cup calorimeter, 100 mL of 1.0 M NaOH and 100.0 mL of 1.0 M HCI are mixed. Both…

A: Molarity of NaOH = 1.0 M  Volume of NaOH solution = 100.0 mL = 0.100 L  Molarity of HCl = 1.0 M…

Q: The addition of 3.15 g of Ba(OH)₂ 8H₂O to a solution of 1.52 g of NH SCN in 100 g of water in a…

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Q: In a coffee-cup calorimeter, 110.0 mL of 1.4 M NaOH and 110.0 mL of 1.4 M HCI are mixed. Both…

A: The total volume of the solution is = 110.0 + 110.0 = 220.0 mL The increase in the temperature of…

Q: How many milliliters of water at 31 °C with a density of 1.00 g/mL must be mixed with 95.0 mL (about…

A: Given: Initial temperature of water=31 degree celciusdensity =1.00g/mlvolume of coffee(m2)=95…

Q: Calculate the mass of water (H,O, CHO = 4.181 J g-l °C-) at 20.0°C that would be requireć to cool a…

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