How many grams of benzene, C,H,, can be melted with 88.8 kJ of heat energy? The molar heat of fusion of benzene is 9.95 kJ/mol.

Q: For many years drinking water has been cooled in hot climatesby evaporating it from the surfaces of…

A: Since the heat required for the evaporation of 60 g of water is given by the rest of water by…

Q: Isopropyl alcohol is used in rubbing alcohol mixtures. alcohol on the skin caused by evaporation.…

A: Given : Mass of alcohol = 7.71 g And heat of vaporisation of alcohol = 42.1 KJ/mol. The molecular…

Q: How many grams of benzene, C6⁢H6, can be melted with 88.8 kJ of heat energy? The molar heat of…

A: Using relation between enthaply of fusion and heat energy mass of benzene produce can be calculated.…

Q: What does not correspond to the molar heat of fusion?

A: According to the first law of thermodynamics, the total heat change of a system at constant pressure…

Q: How much energy is required to freeze 121.0 grams of liquid ethanol?  Ethanol heat of vaporization…

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Q: How much energy in calories is absorbed when 50.0 g of ice cubes melt? The heat of fusion of H 2O is…

A: Given, Mass of the ice is 50.0 g Heat of fusion of H2O, ∆Ho = 79.7 cal/g Formula Used, q = m. ∆Ho…

Q: Using the provided data, calculate the amount of heat, in kJ, required to warm 27.3 g of solid…

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Q: help would be appreciated

A: Given, Mass of NaCl = 67 g Heat of fusion of NaCl, △Hfus = 30.2 kJ/mol Molar mass of NaCl = 58.44…

Q: How much energy (in kJ) is required to heat 15.98 g of Ga(s) from 29.8 K (its melting point) to…

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Q: Suppose that 1.15 g of rubbing alcohol (C3H8O) evaporates from a 65.0-g aluminum block. If the…

A: The given data contains, mass of block = 65.0 g. Temperature ( initial ) = 25°C

Q: A 389.3 gram sample of an unknown substance (MM = 92.41 g/mol) is heated from -23.1 °C to 51.8 °C.…

A: Heat absorbed by substance to convert it from solid to liquid.

Q: How much energy is released when 34.8 g of water freezes? The heat of fusion for water is 6.02…

A: The Given data- The mass of water = 34.8 g. The heat of fusion = 6.02 kJ/mol. to determine = The…

Q: 12. Patients with a high body temperature are often given "alcohol baths". The heat of vaporization…

A: Heat of vaporization means the heat required to covert a fixed amount of liquid to gas.

Q: he heat of vaporization of water is 540 cal/g. How much heat is needed to change 2.

A: Solution-    Heat of vaporization of water= 540 cal/g means amount of heat required to vaporize…

Q: 10.How does the heat of fusion of water compare to the heats of fusion of other similar substance…

A: Heat of fusion is directly proportional to intermolecular forces.

Q: A student is asked to calculate the amount of heat involved in changing 10.0 g of liquid bromine at…

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Q: How many J of energy must be removed when 126.0 g of steam, at a temperature of 163.0°C, is cooled…

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Q: Determine the total amount of heat in kJ needed to warm 36.9 g of ice at -29.4 °C to water at 39 °C.…

A:

Q: A 523.70 g sample of acetone gas has a temperature of 56.0°C. How much heat is involved in…

A: Data given: Formula: C3H6O Melting Point: -94.0°C Boiling Point: 56.0°C Density of liquid: 0.791…

Q: How much heat energy is required to melt 126.0 g of HBr? The molar heat of fusion of HBr is 2.41…

A: Given   mass of HBr = 126 gram  Molar Heat of Fusion    = 2.41 KJ/ mol  Energy required to melt 126…

Q: The enthalpy of vaporization of water is larger than its enthalpy of fusion. Explain why.

A: Given:It is given that,"The enthalpy of vaporization of water is larger than its enthalpy of…

Q: The heat of vaporization for CH4 is 152 cal/g. How much heat is needed (in calories) to vaporize 0.4…

A: The heat of vaporization for CH4 is = 152 cal/g The amount of heat is needed (in calories) to…

Q: How much energy is required to vaporize 188 g of butane (C 4H 10) at its boiling point, if its ΔH…

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Q: does LiF have a higher vapor pressure at 25oC than H2S?

A: FALSE - LiF will have higher vapor pressure at 25 degree C than H2S Note: LiF has strong electro…

Q: What does not correspond to the molar heat of fusion? O AHfus O the heat absorbed by one mole of a…

A:

Q: The freezing point of ammonia (NH3,17.04 g/mol) is -77.73°C. In an experiment, 367.2 grams of solids…

A: Given,Mass of water = 250gSpecific heat of ammonia = 4.742 J/go C

Q: A 417.3 gram sample of an unknown substance (MM = 92.41 g/mol) is heated from -23.1 °C to 51.8 °C.…

A: To solve this problem we will use the formula  q = m•c•∆T  Where, q = heat absorbed or released  m =…

Q: How many grams of benzene, C,H,, can be melted with 21.8 kJ of heat energy? The molar heat of fusion…

A: Given data: The heat energy (q)=21.8 kJ. The molar heat of fusion of benzene=9.95 kJ/mol. To find:…

Q: How much heat is necessary to change 565 g of ice at -5°C to water at 20°C?

A: Given,Mass of ice = 565g.Initial temperature = -50C.Final temperature = 200C.

Q: How much heat is required to vaporize 54.9g of acetone at its boiling point? The heat of…

A:

Q: lculate the amount of heat energy required to melt 25.0 g of ice at 0.0°C. (molar heat of fusion of…

A: Molar heat of fusion of ice = 6.01*10³ g/mol

Q: How much heat is needed to convert 36.5g of ice at 0°C to water at 66°C? ΔHfus of ice = 6.01 kJ/mol…

A: given, mass of Ice = 36.5 g Initial temperature (Ti) = 0°C Final temperature (Tf) = 66°C Note: molar…

Q: A 389.7 gram sample of an unknown substance (MM = 92.41 g/mol) is heated from -23.1 °C to 51.8 °C.…

A: Mass of unknown sample = M= 389.7 gMolar Mass of Unknown Sample = 92.41 g/moleNo of moles of Unknown…

Q: How much energy (in KJ) does it take to melt 25.0 grams of ice?  ^Hfus = 6.02 kJ/mol ^Hvap = 44.0…

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Q: 7. How many calories of energy are released to the surroundings when 275g of mercury freezes? The…

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Q: The greater the molar heat of vaporization of a liquid, the greater its vapor pressure. Is this true…

A: It is not true.  Explanation  As higher the molar heat of vaporization,  .more is the intermolecular…

Q: How much heat energy is required to boil 23.0 g of ammonia, NH,? The molar heat of vaporization of…

A: Given data: The mass of ammonia m= 23.0 g. The molar heat of vaporization of ammonia = 23.4 kJ/mol.…

Q: Naphthalene, an organic substance often used in mothballs, has a heat of fusion of 35.7 cal/g (149…

A: Mass of naphthalene can be calculated from the given Number of moles and molar mass:

Q: A 389.7 gram sample of an unknown substance (MM = 92.41 g/mol) is heated from -23.1 °C to 51.8 °C.…

A: We are changing the sample from solid to liquid. During this process, energy is supplied in three…

Q: How many grams of benzene, C,H,, can be melted with 65.4 kJ of heat energy? The molar heat of fusion…

A:

Q: A 249.3 gram sample of an unknown substance (MM = 92.41 g/mol) is heated from -23.1 °C to 51.8 °C.…

A: Given: The mass of the sample, (m) = 249.3 g. The molar mass of the sample, (M) = 92.41 g/mol. The…

Q: The heat of vaporization of water is 40.66 kJ/mol. How much heat is absorbed when 3.17 g3.17 g of…

A: Given that the heat of vaporization of water is 40.66 KJ/mol. The mass of water is 3.17 g. Here, the…

Q: How much heat energy is required to melt 858.3 g of HBr? The molar heat of fusion of HBr is 2.41…

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Q: A 459.3 gram sample of an unknown substance (MM = 92.41 g/mol) is heated from -23.1 °C to 51.8 °C.…

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Q: How many grams of ethanol, C2H5OH, can be boiled with 790.4 kJ of heat energy? The molar heat of…

A: Formula  q = m* Hvap where q = heat energy  m= mass , Hvap = heat of vaporisation

Q: - How much heat does your body lose when 2.8 g of sweat evaporates from your skin at 25 °C? (Assume…

A: This involves phase transitions. Sweat is transitioning from a liquid to a gaseous state.Separating…

Q: The heat of fusion for CO2 is 8.35 kJ/mol. How much heat is needed to melt 2g of CO2?

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Q: What is the heat of fusion of a metal if 22.8 g of the metal requires 2935J to  melt?

A: Given that: Mass of metal (m) = 22.8g Heat (q) = 2935 J Heat of fusion ∆Hf =?

Q: A 791.0 g sample of acetone sitting in the lab has a temperature of 21.7°C. How much heat would be…

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States of Matter

The substance that constitutes everything in the universe is known as matter. Matter comprises atoms which in turn are composed of electrons, protons, and neutrons. Different atoms combine together to give rise to molecules that act as a foundation for all kinds of substances. There are five states of matter based on their energies of attraction, namely solid, liquid, gases, plasma, and BEC (Bose-Einstein condensates). 

Chemical Reactions and Equations

When a chemical species is transformed into another chemical species it is said to have undergone a chemical reaction. It consists of breaking existing bonds and forming new bonds by changing the position of electrons. These reactions are best explained using a chemical equation.