A chemical reaction is run in which 248 Joules of heat are absorbed and 720 Joules of work is done on the system. Calculate the change in the internal energy of the chemical system. E = _______________Joules

Q: A cook wants to heat 1.35 kg of water from 32.0oC to100.0 oC. If he uses the combustion of natural…

A: It is given that 1.35 kg of water will be heated from 32°C to 100°C using natural gas, which…

Q: 240 g of water (initially at 20 o C) are mixed with an unknown mass of iron (initially at 500 o C).…

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Q: A hot lump of 35.6 g of aluminum at an initial temperature of 51.6 °C is placed in 50.0 mL H, O…

A: Mass of Aluminum = 35.6 g  Initial temperature of Aluminum = 51.6°C  Specific heat capacity = 0.903…

Q: A 440.0g sample of water is at 30.0ºC. How many joules of energy are required to raise the…

A: The amount of heat required to increase the temperature of the 1 g of the substance by 1 degree is…

Q: Calculate the ΔE for a gas that releases 43 J of heat and has 120 J of work done on it.

A: According to first law of thermodynamics, ∆E=q+w Here, ∆E is change in internal energy q is the heat…

Q: Imagine that you have a Styrofoam cup filled with 20.0 grams of water at room temperature (25.0 °C).…

A: Given: the mass of water = 20.0 g The temperature of water = 25.0 °C The mass of zinc metal = 8.00 g…

Q: AA east.cengagenow.com la... Biology Pre-P... my MCC | Mid... WebAdvisor f... Progress Mi... This…

A: The heat always flows from higher temperature to lower temperature. Thus, heat flows from an iron…

Q: If a machine does 75.44 kJ of work after an input of 97.31 kJ of heat, what is the change in…

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

Q: An unknown metal is brought to the lab. To determine the specific heat capacity of the unknown, the…

A: Heat generated by unknown metal use to rise temperature of water.

Q: A bomb calorimeter, or a constant volume calorimeter, is a device often used to determine the heat…

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Q: 6.14 Thermal decomposition of 5.0 metric tons of limestone to lime and carbon dioxide absorbs…

A: 6.14 Energy of thermal decomposition of 5 metric tons limestone to lime and CO2 = 9.0×106 KJ a)…

Q: A house is built with a granite countertop. The heat capacity of the countertop is 151.8 kJC. A hot…

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Q: a 2.25 kg of aluminum small engine block heats up to 125 C. engine coolant at 25 C is added to…

A: Heat absorbed by the coolant = -heat lost from Al

Q: A bomb calorimeter, or a constant volume calorimeter, is a device often used to determine the heat…

A: The heat absorbed by calorimeter (qc) is calculated as follows:

Q: A sample of gas is cooled, releasing 94 J of energy. The change in internal energy for the gas is…

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

Q: Using A chemical reaction takes place inside a flask submerged in a water bath. The water bath…

A: The formula used is :-  Q = mc∆T  Q = heat released  m = mass of water  c = specific heat capacity…

Q: A chemical reaction is run in which 141 Joules of heat are generated and 161 Joules of work are done…

A: Welcome to bartleby !  Introduction :  We have to calculate internal energy of the system .

Q: A volume of 125 mL of H2O is initially at room temperature (22.00 ∘C). A chilled steel rod at 2.00…

A: Given,Volume of water = 125 mLInitial temperature of water = 22.00 °CInitial temperature of steel =…

Q: Question Completion Status A Moving to another question will save this response Question 41 Motch…

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Q: How much energy is required to heat 50 gallons of water from 20C to 130F (note the unit change)?…

A: For a particular compound that consists mass of 1.0 gram, then energy (q) required for the…

Q: A 25.00 gram sample of an unknown metal initially at 99.0 degrees Celcius is added to 50.00 grams of…

A: The specific heat is defined as- the required heat to increase the temperature 1° C of a substance…

Q: A gas absorbs 50. kJ of heat and does 26 kJ of work. Calculate (delta)E.

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Q: A milkman boils the milk before distributing it in the pots. He raises the temperature of the milk…

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Q: A  20.7 gram piece of metal at 152.2  oC is dropped into 80.9 grams of water at 18.3 oC.  The water…

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Q: A system releases 125 kJ of heat while 104 kJ of work is done on it. Calculate ΔE.

A: Given: Heat energy released = -125 kJ Work done = 104 kJ

Q: A hot lump of 27.0 g of iron at an initial temperature of 81.7 °C is placed in 50.0 mL H,0 initially…

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Q: A volume of 115 mL of H₂O is initially at room temperature (22.00 °C). A chilled steel rod at 2.00…

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Q: What mass of natural gas (CH4)  must burn to emit 265 kJ  of heat? CH4(g)+2O2(g)→CO2(g)+2H2O(g)…

A: To solve this problem we have to consider the given thermochemical equation . According to this…

Q: A layer of copper welded to the bottom of a skillet weighs 120 g. How much heat (in J) is needed to…

A: Relation between heat required (Q), specific heat capacity (c), mass (m) and temperature change (T2…

Q: A gas is heated by adding 30. kJ of heat to the gas.  As it heats, it also expands from 30. L to 50.…

A: • The values provided in the question are:-  i) Quantity of heat energy absorbed by the gas, Q = 30…

Q: "A unknown metal weighs 431g and is heated to 92°C before putting it into a coffee cup calorimeter…

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Q: The amount of heat required to raise 4.00g of an unknown metal (Aluminum, Copper, or Gold) by 20.0 K…

A: Given :-  Mass of the unknown metal = 4.00 g  Amount of heat required = 72.0 J  Change in…

Q: What mass of natural gas (CH,) must burn to emit 263 kJ of heat? CH4 (9) + 202 (9) → CO2 (g) +…

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Q: A 45.00g sample of metal is heated to 98.0°C and placed in 100.00g of water at 21.0°C in a Styrofoam…

A: The following  concept is used to solve the above question

Q: net change in the internal energy

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Q: A gas absorbs 45 kJ of heat and does 29 kJ of work. Calculate ∆E.

A: From first Law of Thermodynamics , the total change in internal energy of the system can be…

Q: A hot lump of 37.1 g of iron at an initial temperature of 52.0 °C is placed in 50.0 mL H,O initially…

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Q: A 25.0 mL sample of ethanol (density=0.789 g/mL) initially at 7.0 Celsius is mixed with 35.0 mL of…

A: Volume of ethanol = 25.0 mL Density of ethanol = 0.789 g/mL So, mass of ethanol = volume * density =…

Q: Thermal decomposition of 5.0 metric tons of limestone tolime and carbon dioxide requires 9.0106kJ of…

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Q: A hot lump of 33.8 g of iron at an initial temperature of 51.8 C is placed in 50.0 mL H,0 initially…

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Q: How much heat energy is added to 29.0 g of copper when the temperature changes by 25 degrees?  The…

A: Given: Mass of copper =  29.0 g Temperature change = 25∘C    Specific heat of copper = 0.386 J/g ∘C

Q: Assume a car is rated at 28.0 miles/gallon using gasoline only at $3.50/gallon and 22.5 miles/gallon…

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Q: A system releases 125 kJ of heat while 104 kJ of work is done on it. Calculate ∆ E .

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Q: 40. Gloves are often worn to protect the hands from being burned when they come in contact with very…

A: According to the question, we have a table with different material and their specific heat.

Q: A 456g sample metal with a specific heat capacity of .21 is initially at a temperature of 24.1…

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Q: Which is the least expensive source of energy in kilojoules per dollar: a box of breakfast cereal…

A: Since it is given that 1.0 ounce = 130 Calories Therefore, 32 ounces of cereal in energy = 32×130…

Q: O It takes 34.7 kJ to heat up a 1.42-kg piece of an unknown metal from 25.0°C to 88.5 C. Suppose…

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