How much energy in calories is required to heat 125 g of Fe from 25°C to 150°C? (Specific heat capacity for iron is 0.108 cal/g·°C.)

Q: How much energy as heat is required to raise the temperature of 50.00 mL of water from 25.04 °C to…

A: Given: Density of water at this temperature is 0.997 g/mL The specific heat capacity of liquid water…

Q: When 10.0 g KOH is dissolved in 100.0 g of water in a coffee-cup calorimeter, the temperature rises…

A: Coffee-Cup calorimeter is a device which is used to measure the enthalpy of chemical process at…

Q: Adding 5.47 g of to 140 g of water in a coffee-cup calorimeter (with stirring to dissolve the salt)…

A: According to the question, we are adding 5.47 g of NH4NO3 to 140 g of water in a coffee-cup…

Q: A 20.0 g block of iron (molar heat capacity 25.1 J/mol °C) at 83.4 °C is placed into 200.0 g of…

A: Answer:This question is based on law of conservation of energy where energy lost by hotter object…

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: When one mole of C6H6 is burned, 3.27 MJ of heat is produced. When the heat from burning 5.27 g is…

A: Given: 3.27 MJ = 3270000 J molar mass of C6H6 = 78.11 gm/mol that mean 78.11 gm C6H6 = 1 mole then…

Q: What is the change in internal energy

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Q: A 115.0-g sample of a metal at 165.0 °C is added to 265.0 g of ethylene glycol (specific heat = 2.43…

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Q: 3. ) Ethylene glycol, used as a coolant in automotive engines, has a specific heat capacity of 2.42…

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Q: The formation of rust (Fe2O3) from solid iron and oxygen gas releases -1.7  103 kJ. 4 Fe(s) + 3…

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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: An unknown sample of coal is burned in an apparatus with a calorimeter constant of 2.44 kJ/°C. When…

A: The value of the calorimeter constant is = 2.44 kJ/°C The mass of the sample is = 0.281 g The…

Q: Iron can be converted to Fe₂O₃ according to the reaction below. How much heat (in kJ) is required to…

A: The branch of chemistry that deals with the structure, properties and the reaction of the organic…

Q: 11 A chemist carefully measures the amount of heat needed to raise the temperature of a 511.0 mg…

A: The objective of this question is to calculate the molar heat capacity of C4H11N using the given…

Q: Calculate the energy needed to raise the temperature of180.0 g of water from 10C to40C. The…

A: The question is based on the concept of chemical thermodynamics. it involves amount of heat required…

Q: The table lists the specific heat capacities of select substances. Substance Specific heat…

A: The specific heat capacity is calculated using formula,

Q: A 44.3 g sample of water at 100.00 °C (specific heat of water = 4.184J/g.°C) was placed in an…

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Q: The change in the internal energy of a system (ΔE) is -74 J. What is the work done when the system…

A: We have to calculate the work done.

Q: A 50.0 g sample of liquid water at 25 °C is mixed with 44.7 g of water at 45.0 °C. What is the final…

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Q: When 10.6 g NaOH dissolves in 232 g of water in a coffee-cup calorimeter, ΔH = −42.6 kJ/mol. The…

A: To calculate the final temperature of a solution of sodium chloride in water.

Q: A piece of iron is heated to 95 °C and dropped into 150 g of water at 25 °C. When equilibrium is…

A: Given, Let m ass of iron= mi=?

Q: A chemist carefully measures the amount of heat needed to raise the temperature of a 198.0 mg sample…

A: Each chemical reaction is associated with the liberation or intake of a certain quantity of heat.…

Q: A 28.0−g sample of an unknown metal at 99°C was placed in a constant-pressure calorimeter containing…

A: Thermodynamic is the branch of chemistry that mainly deals with the heat transfer between system and…

Q: A chemist carefully measures the amount of heat needed to raise the temperature of a 1.25 kg sample…

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Q: Calculate the heat (in kJ) for a 2.80 kg system changing temperature from 85.0 oC to 10.0 oC? The…

A: The heat is to be calculated

Q: A 52.75 gram sample of iron (with a heat capacity of 0.450 J/g ºC) is heated to 100.0 ºC.

A: Calculating heat of water: Mass of water (m) = 46.64g Specific heat of water (s) = 4.184 J/g°C…

Q: Magnesium burns in air to produce a bright light and is often used in fireworks displays. The…

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Q: A 7.37 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 sample = 7.37 gMass of water = 150 g Mass of solution = 157.37 g Initial temperature…

Q: 5. To determine whether a shiny silver-colored rock is actually silver, a chemistry student decides…

A: GIVEN:-

Q: A 4.77 g sample of an unknown salt (MM = 116.82 g/mol) is dissolved in 150.00 g water in a coffee…

A:

Q: 20 g of chocolate was combusted completely in a calorimeter with 100 mL of water inside. The…

A: Given data is Mass of chocolate combusted = 20 g Volume of water  in a calorimeter = 100 mL  The…

Q: A coffee cup calorimeter, including that water it contains, has a heat capacity of 425 J/K, and is…

A:

Q: Calculate the energy required to heat 2.00 kg of silver from -6.1 °C to 10.2 °C. Assume the specific…

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Q: 1) Glucose, C6H12O6 (MM = 180 g/mol), is converted into ethyl alcohol, C2H5OH(l) in the fermentation…

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Q: Which of the following statements is/are true? I. q (heat) is a state function because ΔH is a state…

A: State function is independent of the path of transformation.  Heat increase/decrease = m×s×dt Where…

Q: 12. An aluminum kettle weighs 1.05 kg.(a) What is the heat capacity of the kettle?(b) How much heat…

A: (a) Given that mass of aluminium kettle =1.05 kg = 1050 g Now, heat capacity is explained as the…

Q: In a coffee-cup calorimeter, 23.8 g sample of solid KBr is dissolved in 100.0 g of water at 15.0 °C.…

A: Given mass of water = 100 g Mass of KBr = 23.8 g Molar mass of KBr = 119 g/mol specific heat (C) =…

Q: 2 Calculate the temperature reached when 100 g of water at 18.2°C absorbs 9.45 kJ of heat energy.…

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Q: What is the specific heat capacity of a piece of wood if 3500. g of the wood absorbs 47,550. joules…

A: From the formula of specific heat capacity we have solved this problem.

Q: A chemist is asked to determine the specific heat capacity of an unknown mineral. The 154-g sample…

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Q: A 1.36 g sample of a soluble salt dissolves in 23 mL of water in a coffee cup calorimeter.  When the…

A: Given: Mass of sample               = 1.36 g Volume of water              = 23 mL Decrease in…

Q: A 85 g rock is heated to 98.7°C and placed into 125.3 g of water originally at 30.0°C . If the final…

A:

Q: A 2.62E1 g sample of aluminum at 1.008E2 °C is added to 1.002E2 g of water at 2.22E1 °C in a…

A: For a chemical reaction or physical process to occur a certain amount of energy should be furnished…

Q: A 25.0 g block of copper (specific heat capacity 0.380 J/g °C) at 34.0 °C is placed into 500.0 g of…

A: We have to calculate the change in temperature for metal block.

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…