An insulated container is half full of room temperature water. If the container is shaken vigorously for two minute, what happens to the temperature of the water? It decreases by a factor of 2   It decreases   It increases   It stays the same   It increases by a factor of 2

Q: 2. When 27.2 g of solid A, at its melting point of 34.0 °C, was added to 62.7 g of liquid A at 51.2…

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Q: 4. Freezing/ Solidifying 5. Melting/ Liquefying 6. Boiling point

A: In heating / cooling curve each region specify different phenomenon required in heating .…

Q: Use the observation in the first column to answer the question in the second column. observation…

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Q: The graph below represents the heating curve of a substance that starts as a solid below its…

A: Melting point of substance is the temperature at which solid converts into the liquid state.

Q: When a sample of 4°C water is cooled, it   expands.   remains unchanged.   Not enough information is…

A: Density is defined as mass divided by volume.

Q: Use the heating-cooling curve below to answer the following questions. 160. 140 120 100 80 60 40 20…

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Q: Calculate the amount of heat needed to melt 19.6g of solid octane (C8H18) and bring it to a…

A: Information used: Enthalpy of fusion of octane = 20.74 kJ /mol Melting point of octane = 216 K…

Q: Vanadyl trichloride (VOCI3) is a liquid that is used as a catalyst in the manufacturing of…

A: The mass of vanadyl trichloride is = 15.73 g The heat of vaporization of vanadyl trichloride is =…

Q: When a solid forms from a liquid of the same nature, we call it: A) melting B) fusion C) dissolution…

A: When a liquid loose its energy or energy is released then it will convert into solid.

Q: calories need to melt 80.0 g of ice at 0°C and to warm the liquid to 65° C (two steps)

A: Given : Mass of water = 80.0 g Initial temperature of ice = 0.0 oC And final temperature of ice = 65…

Q: What is the process of the cooling curve of Naphthalene from 90 degrees to 55 degrees? tips (cool to…

A: According to the laws of thermodynamics, the process of freezing/melting or boiling takes place at…

Q: Calculate the amount of heat needed to melt 60.7 g of solid benzene (C,H,) and bring it to a…

A: The heat needed for the process = heat required for melting + heat required to increase the…

Q: How much heat is required to change 265.4 g of water at 70.3°C to steam at 100.0°C? kcal

A: The amount of heat required to change 265.4 g of water at 70.3°C to steam at 100.0°C is to be…

Q: How many kilojules are required to melt 15 g of ice at 0 C, and raise the temperature of the liquid…

A: kilojules are required to melt 15 g of ice at 0 C, and raise the temperature of the liquid that…

Q: 0-1. Here is some physical data for the compound trichlorofluoromethane, Ca;F also called freon-1…

A: Mass of compound = 74.5 g Initial temperature = -52.30C Final temperature = 44.9 oC

Q: Calculate the amount of heat needed to melt 14.8 g of solid methanol (CH,OH) and bring it to a…

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Q: When 27.2 g of solid A, at its melting point of 34.0 °C, was added to 62.7 g of liquid A at 51.2 °C,…

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Q: how many kilocalories are needed to convert 18 g of ice at 0 Celsius to steam at 100 celsius ?

A: First heat is latent heat of fusion  Second is raise the temperature  Third is vaporisation

Q: heatin using additional information to your graph so that none is missed. Background Information on…

A: Data collected in the thermal studies of ethanol is plotted in form of a graph and the graph is…

Q: The state/s of water that exist at 100°C is/are (multiple answers are allowed)   Liquid   Gas…

A: There are three phases of matter. The phase of matter can be interchanged by changing the…

Q: A sample of water at 23 degrees Celsius required an input of 1.69 times 10 to the fourth power J of…

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Q: Calculate the amount of heat needed to melt 128. g of solid acetic acid (HCH2CO,) and bring it to a…

A: The mass of solid acetic acid is given as 128 g and it is required to calculate the amount of heat…

Q: How much heat (in kJ) is released when 39.5 grams of liquid bromine (Br2) is cooled from an initial…

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Q: Use the observation in the first column to answer the question in the second column. observation…

A: The higher the enthalpy of vaporization lower the vapor pressure of the substance and the higher is…

Q: Calculate the amount of heat needed to melt 28.8 g of solid benzene (C,Hs) and bring it to a…

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Q: The graph below represents the heating curve of a substance that starts as a solid below its…

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Q: You have 10.3 g of a colorless liquid. Adding 155.1 J of heat increases the temperature of the…

A: Given that: Mass of liquid(m) = 10.3g  Heat(q) = 155.1J T1 = 25.0°C T2 = 28.6°C Change in…

Q: The graph below represents the heating curve of a substance that starts as a solid below its…

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Q: When a substance is turning from a solid into a liquid, there is no rise in temperature. All the…

A: A solid melts into a liquid at the constant temperature. That is, the temperature remains constant.…

Q: 120- 90 60 30- Time (minutes) What is the melting point of this substance? Which letter represents…

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Q: How many calories are needed to raise 10 g of ice at -5 °C to steam at 100 °C.

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Q: Use the observation in the first column to answer the question in the second column. observation…

A: Here we have to relate the Enthalpy of vapourisation with boiling point of a substance.Enthaly of…

Q: Calculate the amount of heat needed to melt 53.1 g of solid benzene (CH) and bring it to a…

A: mass of benzene m=53.1 grams inital temprature T1=MELTING POINT OF BENZENE = 5.490C final temprature…

Q: Analyze each of the following statements whether it describes the heating and cooling curve of…

A: All matter can be classified as solid, liquid and gases mainly. In these physical states of matter,…

Q: Calculate the amount of heat needed to melt 53.7 g of solid benzene (C,H) and bring it to a…

A: The heat required to change the temperature of any substance is directly proportional to the…

Q: Q3) what is the effect of impurities on melting point?

A: Impurities present in a solid organic compound tend to have 2 effects on the melting point.  -->…

Q: t is observed that 1.94 kcal of energy are released when a 27.5 g sample of an unknown liquid…

A: Heat released when a substance is vapourised is equal to the mass times the heat of vaporisation..

Q: 11.What is the laboratory equipment that is best suited to accurately measure large volume of…

A: Note: According to our guidelines we are supposed to answer only one question. Kindly repost other…

Q: Calculating enthalpy of vaporization from vapor pressure The vapor pressure of Substance X is…

A: Introduction: We have to calculate enthalpy of vaporization .

Q: A medicine tablet producer wants to get rid of the alcohol used during the process of compounding.…

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Q: To convert 20 g of ice at -5oC to 120oC to steam you need _______ cal of energy?

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Q: 1.5- P,atm 1.0+ y -10 0 10 20 30 40 50 60 70 T.C

A: The phase diagram shows that the phases denoted by the following letters are W= SOLID X= LIQUID Y=…

Q: Suppose 1 g of water at 10 °C was heated and there are no heat lost in the surroundings. How much…

A: From given data m = 1 g  T1 =10°C =283 K T2 = 110°C= 383K Furthermore, specific heat capacity of…

Q: How manga cubic trots (trots^3) in 1.25 cubic flops (flops^3)

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Q: The object transferring thermal energy will _________ energy and become cooler while the object…

A: 1. loose, absorb  2. coffee, spoon, spoon

Q: Temperature at which the vapor pressure of a liquid is equal to the atmospheric pressure above the…

A: a. absolute zero :  The temperature where all the motion of a particle namely vibrational, rotaional…

Q: A 12 gram sample of water is frozen. How many calories of heat must be removed in order to freeze…

A: Freezing water at 0 degrees Celsius: It also takes 80 calories to freeze 1 gram of water.

Q: f the heat of vaporization of water is 539.5 calories per gram, how many calories of heat are needed…

A: Given that,heat of vaporization of water = 539.5 cal/gmass of water that needs to be vaporized =…