Calculate the amount of coke, (carbon) needed to be burned in order to heat 500.kg of water from 20 degrees C to 50 degrees C. The heat of combustion of coke is 36.15 kJ/g.

Q: A chemist carefully measures the amount of heat needed to raise the temperature of a 0.73 kg sample…

A: Heat capacity is defined as the amount of heat required to change the temperature of the substance…

Q: Sand is converted to pure silicon in a 3 step process. The final step in this process is as follows.…

A: Step 1: Calculation for mass silicon produced in the reaction: The balanced equation is:…

Q: An ideal gas in a cylinder fitted with a piston expands at constant temperature from a pressure of 5…

A: According to the first law of thermodynamics, the energy of the universe remains constant. For a…

Q: A constant pressure (or coffee cup calorimeter) contains 125g of water at a temperature of 24.2°C.…

A: Given , mass of water = 125 ginitial temperature, Ti=24.2°Cmass of KBr added = 10.5 gFinal…

Q: 1.The combustion of methane gas, the principal constituent of natural gas, is represented by the…

A: Recall the given reaction CH4g + 2 O2g → CO2g + 2 H2Ol     ,  ∆H°=-890.3 kJ We have to find the mass…

Q: The table lists the specific heat values of several substances. An unknown substance has a mass of…

A: Mass of substance = m = 16.3 g Temperature increased by Means change in temperature = ∆T = 12.5°c…

Q: The combustion of propane (C3Hg) produces 2220 kJ of energy per mole of propane consumed. What mass…

A: For heat evolved during a reaction, we use the the following expression to calculate the…

Q: When 15.3 g of sodium nitrate was dissolved in water in a calorimeter, the temperature fell from…

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Q: How much heat (in kJ) is required to raise the temperature of a 525.0 mL sample of water from 22.1 C…

A: The heat required to raise the temperature is directly proportional to the mass of sample and the…

Q: 5) A 70.0-g piece of metal at 80.0 °C is placed in 100 g of water at 22.0 °C contained in a…

A: Introduction: Specific heat of a substance is defined as the heat required by the unit mass of…

Q: A 8.17 g sample of an unknown salt (MM = 116.82 g/mol) is dissolved in 150.00 g water in a coffee…

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Q: The heat released when one mole of water is formed from the elements is 1,198 kJ. An experiment was…

A: A question based on chemical thermodynamics that is to be accomplished.

Q: Given that 154.81 g of solution increased in temperature by 4.82 °C, how much heat, in J, was gained…

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Q: 1. In an experiment to determine the Specific Heat of Nickel, a 66.0 g sample of Nickel metal is…

A: Answer :-  The specific heat of Nickel determined by the experiment = 0.544 J/g.°C…

Q: A 22.0 g sample of pure iron at 85 °C is dropped into 73 g of water at 20. °C. What is the final…

A: Mass of pure iron sample = 22.0 g Initial temperature of pure iron sample = 85o C  Mass of water =…

Q: propane (C:H8) produces 2220 kJ of = consumed. What mass in grams of eat 55.0 gal of bathtub water…

A: According to the question, the combustion of propane will produce 2220 kJ of energy per mole.  We…

Q: A metal object with mass of 20.5 g is heated to and then transferred to an insulated container…

A: when we mix to object then it grow from high temperature too low temperature . so apply principle of…

Q: When immersed in water, the temperature of a 102.1 gram sample of metal changes from 150.2 0C to…

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Q: Commercial cold packs consist of solid ammonium nitrate and water. NH4NO3 absorbs 25.69 kJ of heat…

A: Given that: Mass of ammonium nitrate = 3.40 gMass of water = 100 gInitial temperature of solution =…

Q: The enthalpy change for the reaction CH,(g) + 20,(g) → CO,(g) + 2H,O(1) is - 891 kJ for the reaction…

A: The reaction given is Enthalpy change of reaction is -891 KJ.

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

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Q: A 9.13-g sample of vanadium is heated to 99.10 °C and is then placed into 20.0 g water in a…

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Q: A sample of copper with a specific heat of 0.385 J goC is heated from 45.6 oC to 80.7 oC. What is…

A: Answer: The mass of the copper sample is 60.4 g.

Q: A fuel was used to heat water in a calorimetry experiment. When butane was burnt, 96070.0 J of heat…

A: Ans is given below

Q: A 25.0 g sample of material is heated from 30.0 °C to 50.0 °C. In the process, it absorbs 540 J of…

A: Given that: Mass of material (m) = 25.0g  Initital temperature(T1) = 30.0°C Final temperature(T2) =…

Q: 2. Carbon tetrachloride can be formed by reacting chlorine with methane: CH4 + 2 Cl2 → CCL4 + 2 H2…

A: CH4 + 2Cl2-----> CCl4 +2H2 ∆Hof (CH4) = -75 kJ/mol ∆Hof (CCl4 ) = -135 kJ/mol

Q: 4. A block of aluminum weighing 140 g is cooled from 98.4°C to 62.2°C with the release of 1080…

A: Can find this answer in the image attached below.

Q: A calorimeter is calibrated to have a heat capacity of 441.2 J/°c. 0.143 g of substance X is burned…

A: Heat Capacity ,c= 441.2 J/°c.  Mass of compoud,m = 0.143g Change in temperature,∆T = 39.5°C- 23.1°C…

Q: When 6.54 grams of Zn is placed in 500.0 mL of 1.00 M CuSO4(aq) in a coffee cup calorimeter, it…

A: Given data,Mass of Zn=6.54gMolarity of CuSO4=1.00MVolume of CuSO4=500mL=0.5LTemperature…

Q: 2. A solid substance has a mass of 250 grams. It is cooled by 25.00°C and loses 4.937 kJ of heat.…

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Q: When 14.2 g KBr is dissolved in 100.0 g of water in a coffee-cup calorimeter, the temperature drops…

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Q: When a reaction that was known to release 17.55 kJ of heat took place in a calorimeter and…

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Q: In order to break water into hydrogen and oxygen, water is heated to more than 500°C. Which kind of…

A: We have to predict the kind of reaction and reason.