J cal kJ 598 113 0.810

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: Expressing amounts of energy in different energy units is necessary to solve many chemistry…

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Q: A chemist carefully measures the amount of heat needed to raise the temperature of a 378.0 mg sample…

A: mass = 378.0mg = 0.378g Initial Temperature = 30.4oC Final Temperature = 43.1oC Heat required = 20.1…

Q: A chemist carefully measures the amount of heat needed to raise the temperature of a 129.0 mg sample…

A: Mass of sample = m = 129 mg = 0.129 g Initial temperature = T1 = - 9.6°C Final temperature = T2 =…

Q: A chemist carefully measures the amount of heat needed to raise the temperature of a 1.65 kg sample…

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Q: Joules (J) are a measure of energy.  Chemists often measure energy in calories (cal).  If 1 cal =…

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Q: emist carefully measures the amount of heat needed to raise the temperature of a 360.0 g sample of a…

A: Specific Heat capacity is amount of heat required to increase the temperatures of one gram of…

Q: In the laboratory a student uses a "coffee cup" calorimeter to determine the specific heat of a…

A: The heat is related to mass, temperature change, and specific heat of a substance as: q=mc∆T

Q: Expressing amounts of energy in different energy units is necessary to solve many chemistry…

A: The question is based on the concept of unit conversions. We need to convert the given quantity into…

Q: Expressing amounts of energy in different energy units is necessary to solve many chemistry…

A: Given , 1 cal = 4.184 J 1kcal = 1000 cal

Q: The change in enthalpy (heat of solution) for ammonium nitrate dissolving in water is 25.7 kJ/mol.…

A: Molar mass of ammonium nitrate =80.043g/mol

Q: A sample of iron absorbs 77.8 J of heat, upon which the temperature of the sample increases from…

A: Formula, Q = MSΔT

Q: A chemist carefully measures the amount of heat needed to raise the temperature of a 196.0 g sample…

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

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Q: Expressing amounts of energy in different energy units is necessary to solve many chemistry…

A: In this problem, we will discuss about the units of energy: Joule-1 joule is equals to 0.000239006…

Q: A student heats 68.15 grams of silver to 98.73 °C and then drops it into a cup containing 78.21…

A: All the information is given in question  Mass of silver and temperature  Mas software water and…

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 26.9 g rock rolls down the hill at a speed of 81.9 m/s. What is the Kinetic energy of the rock? (…

A: given mass of rock(m) = 26.9*10-3kg speed of rock(v)= 81.9 m/s kinetic energy (KE) =?

Q: Expressing amounts of energy in different energy units is necessary to solve many chemistry…

A: Energy is defined as the ability of a body to do work. The SI unit of energy is the joule. Other…

Q: A sample of gold weighing 7.7 grams is cooled then placed in a calorimeter containing 27.01 grams of…

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Q: You will find the final temperature when 5.00 grams of aluminum at 425℃ is placed in 50.0 grams of…

A: We know that  From the law of heat exchange Heat lost by substance= Heat gained by another substance…

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: We add 3.358 kJ of heat to a calorimeter that contains 50.0 g of water. The temperature of the water…

A: Given: Mass of water = 50 g Initial temperature of water and the calorimeter (Ti) = 22.34 ℃ Final…

Q: chemistry

A: Dear student I have given answer to your question in the image format.

Q: A Snickers® candy bar contains 280 kilocalories, of which the fat content accounts for 120…

A: Energy in kilocalories is equal to 4.184 Joules.

Q: heat, upon which the temperature of the sample increases from 21.5 °

A: Dear student I have given answer to your question in the image format.

Q: A calorimeter holds 50 g water at 29.0°C. A sample of hot iron is added to the water, and the final…

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Q: Expressing amounts of energy in different energy units is necessary to solve many chemistry…

A: Given;  The joule (J) is the SI unit of energy. 1 calorie (cal) = 4.184 J 1 kilojoule (kJ) = 1000 J

Q: Expressing amounts of energy in different energy units is necessary to solve many chemistry…

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Q: A gas expands and does work on the surroundings equal to 4.92 L atm. At the same time, it releases…

A: Given: Work done (W) = 4.92 L atm Heat released by the system according to sign convention (q) = -…

Q: Expressing amounts of energy in different energy units is necessary to solve many chemistry…

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Q: A chemist carefully measures the amount of heat needed to raise the temperature of a 799.0 mg sample…

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