An unknown silver/gray (92.9-g) piece of metal at 178.0°C is quickly placed to 75.0 mL of water initially at 24.0°C. After a few minutes, both the metal and the water have reached 29.7°C. Calculate the specific heat and the identity of the metal. (

Q: a system releases 349 cal of heat and has 258 J of work done to it, what is the change in energy of…

A: The question is based on the concept of chemical thermodynamics.  we have to calculate change in…

Q: Calculate the heat that must be supplied to a 500.0 g stainless steel vessel containing 450.0 g of…

A: The specific heat can be defined as the amount of heat per unit mass that is needed to raise the…

Q: 4. When 155 mL of water at 20.0°C is mixed with 75.0 mL of water at 80.0°C, what is the final…

A:

Q: A chemist carefully measures the amount of heat needed to raise the temperature of a 153.0 mg sample…

A: Given data,  Mass of the sample of a pure substance= 153.0 mg = 153.01000gm= 0.153 g Temperature…

Q: Since the water absorbs 127 J of heat, this means the unknown metal released 127 J of heat. Based on…

A:

Q: If a system absorbs 155 kJ of heat from its surroundings and the system does 53 kJ of work on its…

A:

Q: A chemist carefully measures the amount of heat needed to raise the temperature of a 186.0 mg sample…

A:

Q: The specific heats of several metals are given below. If the same number of Joules were applied to…

A: The specific heat capacity (C) of a substance is generally expressed in J/goC. It is given as the…

Q: If 63.50 g of an unknown metal at 97.6 °C initially produced a resulting temperature of 39.5 °C when…

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

Q: A chemist carefully measures the amount of heat needed to raise the temperature of a 576.0 mg sample…

A: Given that, for a 576.0 mg of pure substance, 10.1 J of heat is required to raise the temperature…

Q: A 7.0-gram metal sample absorbed 211 J of heat as it was heated from 28°C to 85°C. What is the…

A: Given details, m = 7.0 g Q = 211 J T1 = 28° C T2 = 85° C To calculate the specific heat of the metal…

Q: 1-  During a chemical reaction, which of the following statements is ALWAYS true?  I) A system…

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

Q: Chargers for cell phones get warm while they are being used. Some of the energy that they are using…

A: The total energy required to charge a cell phone is equal to the energy a cell phone battery needs…

Q: A chemist placed a 1.195 g sample of fuel in a bomb calorimeter which was immersed into 2.00 L of…

A: The mass of the fuel sample is = 1.195 g The increase in the temperature of the water is = 20.1oC to…

Q: 3. The temperature of a 95.4 g piece of copper increases from 25.0°C to 48.0°C when it absorbs 849 J…

A: According to the question,  We have: Temperature of copper = 95.4 g Initial temperature = Ti = 25 °C…

Q: Calculate the specific heat of a 300.0g sample of iron. If it took 1000. Cal to raise the…

A: Mass of sample = 300 g Heat needed = 1000 cal ∆T = 123 oC

Q: If 100 mL of water instead of 50 mL of water was used, how would the final temperature change? How…

A: Specific heat change is the amount of heat required to increase the temperature of 1 gram of…

Q: A chemist carefully measures the amount of heat needed to raise the temperature of a 1.00 kg sample…

A: Given,  Mass of the substance in kg = 1.00 kg  Initial temperature = Ti = 54.4 0C  Final temperature…

Q: A chemist carefully measures the amount of heat needed to raise the temperature of a 270.0 g sample…

A:

Q: A chemist carefully measures the amount of heat needed to raise the temperature of a 732.0 mg sample…

A:

Q: A chemist carefully measures the amount of heat needed to raise the temperature of a 162.0 g sample…

A: Answer: When heat is added to a substance, its temperature rises but the value of temperature rise…

Q: A chemist carefully measures the amount of heat needed to raise the temperature of a 623.0g sample…

A: • The values provided in the question are:-  i) Mass of a sample of a pure substance, m = 623.0 g…

Q: A chemist carefully measures the amount of heat needed to raise the temperature of a 415.0 mg sample…

A: The amount of heat absorbed or released is equal to the product of mass of substance with specific…

Q: A chemist carefully measures the amount of heat needed to raise the temperature of a 663.0 mg sample…

A: Given Mass = 663 mg = 663 x 10-3 g Heat = 12.8 J T1 = 0°C T2 = 21.4°C

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

A:

Q: A chemist carefully measures the amount of heat needed to raise the temperature of a 823.0g sample…

A: Given;

Q: In the laboratory a student finds that it takes 62.4 calories to increase the temperature of 15.0…

A: Given :-  Heat absorbed = 62.4 cal  Mass of Mg = 15.0 g  Initial temperature = 20.9 oC  final…

Q: You add 7000 J of heat to a piece of iron and you observe a temperature rise of 24.0 ∘C. What is…

A: Given that : Amount of heat added to the iron (q) = 7000 J Temperature rise ∆T = 24°C The specific…

Q: An unknown substance requires 567 J of heat to increase its temperature from 0 to 15 ºC. The  sample…

A: Given, Amount of heat required (Q) = 567 J Initial temperature (Ti) = 0°C Final temperature (Tf) =…

Q: A sample of a metal weighing 18.3 g was heated to 99.9°C, then placed into a calorimeter containing…

A:

Q: A beaker of hot water with a volume of 43.9 mL has an initial temperature of 94.3 °C. You place a…

A:

Q: A chemist carefully measures the amount of heat needed to raise the temperature of a 794.0 g sample…

A:

Q: A chemist carefully measures the amount of heat needed to raise the temperature of a 1.79 kg sample…

A: Answer is given below

Q: . A car performs 6000 joules of work on its surroundings and releases 8000 joules of heat. How much…

A: (1) According to first law of thermodynamics, internal energy change, work and heat related with…

Q: Exactly 385 J will raise the temperature of 76 g of a metal from 15.7oC to 50.9oC. What is the…

A: The given data: The mass of metal is 76 g The temperature of metal raises from 15.70C to 50.90C…

Q: An unknown solid metal at 150 degrees celsius was placed in 1.00 L of water at 25 degrees celsius.…

A: Heat absorbed or emitted by a substance = mass of the substance x specific heat of the substance x…

Q: A chemist carefully measures the amount of heat needed to raise the temperature of a 614.0 mg sample…

A:

Q: If a system does 84.0 kJ of work on its surroundings and releases 105 kJ of heat, what is the change…

A: According to FLT , Change in internal energy = Q + W

Q: The ΔE of a system that absorbs 184 J of heat from the surroundings and has 42 J of work done on the…

A:

Q: A piece of metal weighing 146.7 g was heated from 32.0 °C to 56.2 °C. If the amount of heat needed…

A:

Q: 5. A system compresses when 457 J of work was done on it at the same time it decreases it energy to…

A: Given,  A system 457 J of work done when it compresses, at the same time it decreases energy to 234…

Q: A chemist carefully measures the amount of heat needed to raise the temperature of a 309.0 g sample…

A: Given: The mass of the given sample, (m) = 309 g. The initial temperature, (T1) = -2.9 0C=…

Q: A 92.9-g piece of a metal is heated to 178.0 ºC, and then cooled to 29.7 °C by removing 14052.6 J of…

A:

Q: A block of Iron weighing 207 g absorbs 1.50 kJ of heat. What is the change in the temperature of the…

A:

Q: A chemist carefully measures the amount of heat needed to raise the temperature of a 0.57 kg sample…

A:

Q: If a system does 62.0 kJ of work on its surroundings and releases 105 kJ of heat, what is the change…

A: Ca (s)  + 1/2 O2  (g)  -------> CaO (s)    ΔH°=-635kJ/mol to get desired equation we have to…

Q: It takes 48.0 J to raise the temperature of an 10.7 g piece of unknown metal from 13.0° C to 24.3…

A: