Calculate the heat change in calories for freezing 40 g of water at 0 ∘C. Express your answer as a positive value using two significant figures and include the appropriate units.   answer with value & unit

Q: Data Mass of water: 100.3767g Initial mass of food: 0.0931g Initial temperature of water: 23 degree…

A: Given data: Mass of water: 100.3767 g Initial mass of food: 0.0931 g Initial temperature of water:…

Q: Which of the following cannot leave or enter a closed system: heat, work, or matter?

A: Closed system  that exchange energy and not the matter with surrounding

Q: Calculate the heat change in joules for condensation of 7.10 g of steam at 100° C. Express your…

A: Given data, For part a) Mass of steam = 7.10g For part b) Mass of water = 49g

Q: What is the heat of fusion for 89 grams when the heat capacity is 54J/g?

A: Heat of fusion is the amount of energy required to melt a given mass of substance.

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A: Heat lost or gained is calculated by the formula Q=mcΔTwhere,Q=heatm=massc=specific heat…

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Q: A beaker contained 70.3 g of water at 13.51°C. A 102.77-g sample of metal at 72.84°C was placed in…

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Q: A metal sample weighing 129.00 grams and at a temperature of 97.8 degrees Celsius was placed in…

A: The heat lost by metal sample will be equal to heat gained by water and the specific heat of the…

Q: What is the heat in kJ required to raise 1,973 g water from 27°C to 79°C? The specific heat capacity…

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Q: Calculate the heat change in joules for vaporization of 8.00 g of water at 100 °C. Express your…

A: The latent heat of vaporization for water at 100 degree celsius is given as = 540 cal/g We are asked…

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A: Heat is consumed to convert frozen water to liquid water. The amount of heat consumed is the heat of…

Q: If a battery releases 566.8 J of energy and 201 J are used for work, how much energy is released as…

A: Given : Total energy released by battery = 566.8 J Energy used for work = 201 J

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

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Q: A certain system consists of 5 sugar cubes, which are added to 25mL of distilled water in a glass.…

A: Endothermic process is defined as the process in which heat is absorbed from the environment. The…

Q: Calculate the amount of heat needed to boil 80.0g of hexane (C6H14), beginning from a temperature of…

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Q: When (3.4100x10^2) Joules of heat are added to a sample, the temperature increases from…

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Q: A metal sample weighing 121.50 grams and at a temperature of 96.4 degrees Celsius was placed in…

A: Using conservation of heat law :- -Heat released by sample = heat gain by metal

Q: TRUE OR FALSE 1. Heat flow is a directional quantity. Heat flows from a warmer body to a colder…

A: When there is a temperature gradient exist, heat will always flow. That means that when there is…

Q: mass

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Q: Calculate the amount of heat, in J, required to warm 224 g of sand from 25.0 ºC to 284 ºC.  The…

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Q: A metal sample weighing 123.00 grams and at a temperature of 95.7 degrees Celsius was placed in…

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Q: The cooling system in an automobile holds 10.0 L (11,100 g) of ethylene glycol antifreeze.  How much…

A: Mass of ethylene glycol (m) = 11,100 g Change in Temperature ΔT = 108.2 °C —18.8 °C = 89.4 °C…

Q: Calculate the amount of heat needed to boil 110. g of benzene (CH), beginning from a temperature of…

A: 110.0 g of benzene C6H6 is started to heat from a temperature of 17.8 °C .We have to calculate the…

Q: In Dexter’s lab, he pours 0.720kg of molten gold at 1063°C into a 1.30kg iron cauldron filled with…

A: Amount of heat absorbed = Amount of heat emitted

Q: You have the six pieces of metal listed below, plus a beaker of water containing 300 g of water. The…

A: The standard enthalpy of formation is the enthalpy change for the formation of 1 mol of the compound…

Q: A metal sample weighing 126.00 grams and at a temperature of 96.8 degrees Celsius was placed in…

A: Specific heat capacity is the amount of heat that is required to rise a temperature of 1 kg…

Q: If chart A represents the heating of a 42.0 g of a substance at a constant rate of 100.0 J/min,…

A: Heat absorbed or released by a substance is calculated as: q =m.C.∆T m is the mass of the substance,…

Q: A piece of metal weighing 80.10 g was heated to 99.3°C and then put into 41.55 g of water (initially…

A: Given: The mass of metal, (mm)=80.1 g. The mass of water, (mw)=41.55 g. The initial temperature of…

Q: Do temperature conversions in steps to obtain results with correct numbers of sig figures: 1) T =…

A: Given: 1) T = 670 K. 2) t°C = +3400 °C. 3) t°F = +120 °F.

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: 1. For the following questions, respond using one of the four options: A. Higher B. Lower C. Same D.…

A: Basic of Heat Flow and Enthalpy of Reaction

Q: The amount of energy required to heat water for a 10-minute shower (50 gallons) is 2.2125 kJ. How…

A: Given   Amount of water = 50 gallon  Time = 10 minutes  Energy required = 2.2125 kJ

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Q: The recipe for Bananas Foster requires 35g of ethanol to be added to the pan. The ethanol starts at…

A: Mass of ethanol = 35 g Initial temperature = 25oC Final temperature = 78o C Specific heat capacity…

Q: C. The Thermometer and Its Calibration 2. 98 762 Observed temperature of water-and-ice mixture °C °C…

A: True temperature of boiling water in 760 mm Hg atmospheric pressure, is 100°C We know that pressure…

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

A: Given data contains, Mass of unknown metal = Mm = 25.0 g Initial Temperature of unknown metal =Tm =…

Q: Calculate the heat change in joules for freezing 295 g of water at 0 ∘C. Express your answer as a…

A: Solution:       The amount of heat required to change 1 unit of substance from solid into liquid by…

Q: How much energy, in calories, is needed to raise 8 grams of water from 26C to 41C?

A: q = mc∆T  q is the amount of heat energy required  m is the mass of substance  c is the specific…

Q: A mixing experiment is done using 74.23 grams of 82.53 celsius water and 27.44 grams of 41.29…

A: Given: Mass of water sample 1 or hot water = 74.23 g. The initial temperature of water sample 1 or…

Q: The heat required to raise the temperature of a large cup of water(for coffee) from room temperature…

A: Heat required (q) = 100KJ  We know that:  1kcal = 1000cal = 4.184KJ

Q: The particular substance whose specific heat capacity is 0.90564 J/(g.°C) at a temperature of…

A: The amount of heat required to increase the 1oC temperature of 1 g of a substance is known as the…

Q: Calculate the amount of heat needed to boil 23.1g of octane (C8H18), beginning from a temperature of…

A: The amount of heat required to raise the temperature is calculated using the following equation:…

Q: Calculate the heat change in calories for freezing 20 gg of water at 0 ∘C. Express your answer as a…

A:

Q: Calculate the heat change in kilocalories for condensation of 6.5 kgkg of steam at 100 ∘C∘C. Express…

A: Condensation of steam is conversion of steam to liquid water. During condensation of steam, heat…

Q: To study heat transfer, a group of students conducted the following experiment. They took two 100 mL…

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Q: Part I: Specific Heat of a Known Metal Metal:  _______Cd________     Trial 1   Mass of metal…

A: The amount of heat transferred by a system is calculated as follows,…

Q: Calculate the amount of heat needed to boil 157.g of benzene (C,H), beginning from a temperature of…

A: Given : Mass of benzene = 157g Temperature = 190 C

Q: Which one of the following is a unit of energy? A) exajoule B) bushel C) Volt D) millitorr E)…

A: Which one is unit of energy= ?

Q: If a 33.76 gram piece of porcelain which has a specific heat of 1.07 J/goC absorbs 1,936.56 J of…

A: Given: Mass of the porcelain piece is 33.76 g. Specific heat is 1.07 J/g °C. The energy absorbed is…

Matter and Measurement

In the universe, there is matter, energy, and void space. The universe contains energy and void space. The definition of matter can be considered as something which possesses mass and consumes space. Chemistry is that branch of science which deals with the study of matter. Under chemistry, nature, composition, and the changes occurring to matter are discussed.