How many joules are given off when 120 grams of water are cooled from 25˚C to -25˚C?

Q: 1. How much heat is needed to raise the temperature of 125.0 grams of water by 12.0 °c? C AT

A: Q = M*C*∆T  Q = heat absorbed. M = mass of the sample. 125g C = specific heat. 4.18 ∆T = change in…

Q: Water has a heat of fusion  at 80.0 cal per gram. If I have 4.14 g of ice at its melting point how…

A: Heat of fusion is 80 cal/g. We have 4.14 g of ice at 0°C. We have to calculate the heat required to…

Q: Calculate the amount of heat needed to melt 108.g of solid methanol (CH3OH) and bring it to a…

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Q: How many joules are given off when 120 gram of water are cooled from 25 Celsius to -25 Celsius?

A: Heat capacity is defined as the amount of heat energy is required by 1 gram of a substance (matter)…

Q: Ethanol melts at -144°C and boils at 78°C at a constant pressure of 1atm. What state of matter must…

A: The boiling point of a substance is the temperature at which the vapor pressure of the liquid equals…

Q: a 500g sample of. water at 53 degree celsius is cooled down "-7" degree. celsius how much energy is…

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Q: 5) The specific heat of water is: A. 5 Cal per g per C B. 2 Cal per g per C C. 3 Cal per g per C D.…

A: Introduction: The heat capacity of a matter is the quantity of heat required to increase the…

Q: 1. What is the final temperature when the 625 g of water at 75.0°C loses 7.96 x10^4 J?

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Q: Which of the following represents an increase in kinetic energy? O A. Cooling steam from 165°C to…

A: When the temperature of an object increases, the average kinetic energy of its particles increases.…

Q: if chart B represents the cooling of a 14.0 g of a substance at a constant rate, determine the…

A: During cooling, the substance loses energy (in the form of heat) and the temperature of the system…

Q: Q6. Calculate the amount of heat (kcal) released when 50.0 g of steam at 100°C hits the skin and…

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Q: Convert each temperature. a . 32 °p to 0 c (temperature at which water freezes) b. 77 K to 0 P…

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Q: a 44 gram piece of ice at 0 degrees celsius is added to a sample of water at 6.8 degrees celsius.…

A: The mass of ice is = 44 g The mass of water sample =? The temperature of ice is = 0 degrees celsius…

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

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Q: Calculate the kilocalories needed to melt a 825 gg ice sculpture at 0 ∘C∘C and to warm the liquid to…

A: The amount of kilocalories needed to melt a 825 g ice sculpture is calculated as,

Q: Calculate the amount of heat needed to boil 49.6 g of methanol (CH,OH), beginning from a temperature…

A: Consider the given information is as follows; Mass of methanol = 49.6 g Initial temperature T1 =…

Q: Calculate the amount of heat needed to melt 125. g of solid methanol (CH,OH) and bring it to a…

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Q: Which of the following is the state of matter that exists at 30°C and 1 atm?

A: State of matter depend on nature of material for example . Water is in liquid state at 30°C…

Q: A 251.3g sample of water at 5.3 Celsius is taking the freezing 0 Celsius how much energy was…

A: Given, Mass of Water = 251.3 gms = 0.2513 kg Change in Temperature = (0°C - 5.3°C) = (273 K - 278.5…

Q: Twenty grams of water at 60 C is heated to steam (superheated steam) at 115 C.  How much energy is…

A: Heat absorbed by water to convert it from water to vapor.

Q: Calculate the amount of heat needed to melt 147. g of solid benzene (C,H) and bring it to a…

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Q: A 45.0 mL sample of water is heated to its boiling point. How much heat is required to vaporize it?…

A: Given volume of water is--- 45.0mL Density of water is --- 1.00g/mL How much heat is required to…

Q: Calculate the amount of heat needed to melt 13.2 g of ice (H₂O) and bring it to a temperature of…

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Q: Calculate the amount of heat needed to melt 152. g of solid methanol (CH,OH) and bring it to a…

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Q: Calculate the amount of heat needed to melt 161. g of solid benzene (C¸H ) and bring it to a…

A: The process of converting solid into liquid is called melting and the temperature at which melting…

Q: How many joules of heat are lost b A 400 g of substance as it cools from 50.5 C to -10.5°C? The…

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Q: Calculate the amount of heat needed to melt 75.8 g of solid acetic acid (HCH3CO₂) and bring it to a…

A: The correct answer is given below

Q: Calculate the amount of heat needed to melt 171. g of solid methanol (CH,OH) and bring it to a…

A: Moles are defines as the ratio of mass by the molar mass. The heat of fusion is the heat required to…

Q: Calculate the amount of heat needed to melt 104.g of solid methanol (CH3OH) and bring it to a…

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Q: On your paper, draw the cooling curve for SO2 starting at -50 °C and ending at -100 °C. At each…

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Q: Calculate the amount of heat needed to boil 146. g of hexane (C,H14), beginning from a temperature…

A: Given: Mass of hexane = 146 g Initial temperature of hexane = -16.6 oC

Q: How much energy in kilocalories is needed to cool steam weighing 3.40 g at 172.0°C to -5.28°C?

A: Given: Mass of cool steam=3.40 g T1=172∘C T2=-5.28∘C To find: Energy Solution: We know that there is…

Q: Calculate the amount of heat needed to boil 14.8 g of ethanol (CH,CH,OH), beginning from a…

A: Answer: Boiling the given sample of ethanol is a two step process: 1. Heating of ethanol up to it…

Q: How many joules are required for each of the following changes? c. boiling 21.1 g of water at 100°C

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Q: Calculate the amount of heat needed to melt 173. g of solid benzene (C,H) and bring it to a…

A: Melting point of benzene is 5.5C.   Heat required to melt Benzene = n x ∆Hfus Where, ∆Hfus =…

Q: How hot must the air in a balloon be heated if initially it has a volume of 750. L at 20 °C and the…

A: Charles law implies that when pressure and amount remain constant, the volume of a gas is directly…

Q: If 145 KJ Of Energy Is Added To Water, What Mass Of Water Can Be Heated From 35 °C To 100 C And Then…

A: If 145 kJ of energy is added to water, the mass of water that can be heated from 35 °C to 100 °C and…

Q: The higher the heat of fusion, the longer the line in temperature versus energy graph. O True O…

A: Given: The higher the heat of fusion, the longer the line in temperature v/s energy graph.

Q: If 2400 J of heat melts a piece of solid mercury, what is the mass of the mercury

A: The heat required to melt a substance is calculated as: Q =m.Lf where Q is the heat required to melt…

Q: Q7. What is the amount of heat (kcal) when 50.0 g of steam hits the skin, condenses, and cools down…

A: Given: The mass of steam = 50.0 g We have to calculate the amount of heat in kCal when 50.0 g of…

Q: Calculate the amount of heat needed to boil 108. g of octane (CgH18), beginning from a temperature…

A: Please find your solution below :

Q: Calculate the amount of heat needed to melt 173. g of solid hexane (C,H,4) and bring it to a…

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Q: A 255 mL round-bottom flask is weighed and found to have a mass of 114.85 g. A few milliliters of an…

A: We know that, PV = nRT n = PV/RT    Given,  P = pressure = 1 atm  R = 0.0821 l.atm.mol-1.k-1 T =…

Q: Calculate the amount of heat needed to melt 173. g of solid benzene (C,H) and bring it to a…

A: We know according to Hess law, the amount of heat change in a single step or in multiple step are…

Q: Calculate the amount of heat needed to boil 138. g of hexane (C,H), beginning from a temperature of…

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Q: Which state of matter takes the shape of its container and is compressible?

A: There are three states of matter: solid: solid has a definite shape and having a definite volume,…

Q: How many joules are required to boil 200 grams of water?

A: Given,  The heat energy required to boil of 200g of water is:

Q: What is the heat, q , required to melt 10 grams of ice in a) Joules b) calories

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