How much heat energy is required to convert 74.9 g of solid iron at 29 C to liquid iron at 1538 "C? The molar heat of fusion of iron is 13.8 kJ/mol. Iron has a normal melting point of 1538 C. The specific heat capacity of solid iron is 0.449 J/(g C). kJ

Q: Calculate heat change in joules for vaporization of 3.00 g of water at 100 ∘C∘C.

A: Heat of vaporization: The amount of heat required to convert 1g liquid into vapor. Heat vaporization…

Q: 0.5000 moles of steam at 200°C was chilled in a ultra-low temperature freezer to -90°C. If the heat…

A: It is given that steam is chilled from an initial temperature of 200°C to the ice at -90°C,

Q: Calculate the heat energy required

A:

Q: What amount of heat, in kJ, is required to convert 4.00 g of water at 67.0 °C to 4.00 g of steam at…

A: Mass of water = 4.00 g specific heat capacity of water = 4.184 J/g • °C ∆Hvap = 40.7 kJ/mol)  Q1 =…

Q: The specific heat capacity of silver is 0,235J/g-K. Its melting point is 962°C, and its heat of…

A: Since the silver is initially at 25 oC. Hence to melt the silver from solid to liquid state, first…

Q: How much heat energy in Joules is needed to convert 50.0g of ice at -5°c to liquid water at 100°c so…

A:

Q: The heat of fusion of pure silicon is 43.4 kJ/mol. How much energy in kJ would be needed to melt a…

A:

Q: A 0.790-g piece of lithium metal is dropped into a mixture of 50.0 g water and 50.0 g ice, both at…

A: The relation of heat energy, mass, heat capacity and change in temperature can be given as…

Q: access the section in your e Text. Part A Suppose that 1.05 g of rubbing alcohol (C, Hs O)…

A:

Q: Calculate the heat change in calories for melting of 0.30 kg of water at 0*C. The heat of fusion for…

A: Given : mass of water = 0.30 Kg  Heat of fusion of water = 80 cal/g And temperature of water = 0 oC…

Q: A 17.5-g sample of ice at –11.6°C is mixed with 119.8 g of water at 80.0°C. Calculate the final…

A: The phase change involving different substances always occur after gaining/losing a specified heat.…

Q: A 22.5-g sample of ice at 0.0 oC is added to 100.0 g of warm water at 35.0 oC, and the final…

A: Given : Mass of ice = 22.5 g Initial temperature of ice = 0.0 oC Final temperature of mixture =14.0…

Q: The energy required to melt 1.00 g of ice at 0 °C is 333 J. If one ice cube has a mass of 63.5 g and…

A: The term melting has been defined as a physical process which results ibn the transition of the…

Q: How much heat is required to convert 135 g of ice at -15 °C into water vapor at 120 °C?

A: Given,  Mass of ice = 135 g  Initial temperature = Tinitial = -15 0C  Final temperature = Tfinal =…

Q: The heat of vaporization of water is 40.66kl/mol. How much heat is absorbed when 2.98g of water…

A: Heat of vaporization is amount of heat which converts water from liquid state to the vapour phase.…

Q: How many grams of ice can the amount of heat required to raise the temperature of 3.50 moles of…

A: Given data,Moles of water=3.50moles∆T=50.0oC∆Hm=6.01kJ/mol

Q: The enthalpy of fusion for water is 6.0 kJ/mol and its molar heat capacity is 75 J/mol-K. How many…

A: It would take approximately 21.27 kJ of heat

Q: Ethyl chloride, C2H5CI, is used as a local anesthetic. It works by cooling tissue as it vaporizes.…

A: The molar mass of ethyl chloride is : MC2H5Cl=M2C+M5H+MCl           =[12×2+5×1+35.5]           =64.5…

Q: Steam at 100.°C was passed into a flask containing 550.0 g of water at 32°C where the steam…

A: In the given problem, heat gained in the system is equal to the heat lost by the lost. Heat can be…

Q: A 480.5 gram sample of an unknown substance (MM = 92.41 g/mol) is heated from -23.1 °C to 51.8 °C.…

A: The following steps take place,energy absorbed or released to heat the solid from -23.1oC to 17.6,…

Q: How much energy (in kJ) is needed to heat 5.28 g of ice from -18oC to 30.0oC?  The heat of fusion of…

A: Given : Mass of ice = 5.28 g Initial temperature of ice = -18.0 oC Final temperature of water = 30.0…

Q: How much heat energy is required to convert 90.2 g of solid iron at 24 C to liquid iron at 1538 ∘C?…

A:

Q: How many joules of energy are required to change 50.0 g of Cu from 25.0°C to a liquid at its melting…

A: Given:  Mass of Cu given= 50.0 g  Initial temperature= 25°C  Final temperature= 1083°C  Specific…

Q: A substance has a molar mass of 82.95 g/mol. A 33.5g sample of this substance absorbs 5.114 kJ when…

A: Molar heat of fusion :- The amount of heat absorbed when one mole of a substance changes from solid…

Q: Consider the following data for H2O:   Melting Point = 0.0°C Boiling Point = 100.0°C   ΔHfusion…

A: Given: Melting Point = 0.0°C Boiling Point = 100.0°C ΔHfusion = 6.01 kJ/mol ΔHvaporization = 40.8…

Q: The heat of fusion of pure silicon is 43.5 kJ/mol. How much energy would be needed to melt a 5.24-g…

A: Mass of silicon= 5.24g MOLAR mass = 28g/mol Mole= mass÷molar mass=  5.24÷28= 0.18mole 1 mole Si…

Q: Calculate the amount of energy (in kJ) that is evolved as heat when 1.0 L of water at 0 0C…

A: We have 1 L of water at 0°C, we have to calculate the heat evolved when it solidifies to ice .

Q: 13. How much heat in kJ is needed to warm 31.6 g of ice from 10 °C to steam at 175 °C. The heat…

A: Mass of ice = 31.6 g  Molar mass of ice = 18.00 g.mol-  Delta Hfusion = 6.02 × 103 J.mol-  Delta…

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

A: The molar heat of fusion of a substance is the heat absorbed or released when 1 mole of the…

Q: How much heat energy is required to convert 40.7 g40.7 g of solid iron at 25 ∘C25 ∘C to liquid iron…

A: Principle: The following relation can define heat absorbed by a substance. Q=mC∆T where  m-mass of…

Q: How much heat is required to turn a 1 kg cube of ice at -10°C to steam at 110°C?

A: The heat is consumed in the following ways: 1. Heat required to convert 1 kg (1000 g) ice at -10°C…

Q: Calculate the total heat flow, qtotal, when 15.0 g of water is heated from -5.0°C to 30°C. The heat…

A: When 15.0 g of water is heated from -5.0 °C to 30 °C , then three process would be involved in it .…

Q: 2.The heat of sublimation for carbon dioxide is 32.3 kJ/mol. Calculate the mass of solid dry ice…

A: We will calculate mass of CO2

Q: The heat of fusion of acetic acid, the principal organic component of vinegar, is 192 J/g. How much…

A:

Q: What quantity of heat energy is required to convert 20.0 g of ice at 0. C to steam at 100 C? The…

A: Given: Mass of ice=20.0 g at 0 degree celcius to steam at 100 degree celcius.The heat of fusion of…

Q: The heat of vaporization of water is 2260 J/g. determine q when 100 g of steam at 100˚C is condensed…

A:

Q: 5. The specific heat of ice is 2.09 J/g°C while the specific heat of lead is 0.128 J/g°C. Explain…

A: Before answering this question let us take some basic idea of specific heat capacity or simply…

Q: 2. The heat of vaporization of water at 1000C is 2.26 kJ/g; at 370C it is 2.41kJ/g. a. What is the…

A: Given ∆Hvap at 100°C = 2.26 KJ/g  ∆Hvap at 37°C = 2.41 KJ/g  We have to find standard molar heat of…

Q: The heat of fusion of pure silicon is 43.4 kJ/mol. How much energy would be needed to melt a 5.24-g…

A:

Q: If 100.0 g of ice at -10.0°C is placed in 200. g of water at 90.0°C in an insulated container, what…

A: Given : Mass of ice = 100.0 g Initial temperature of ice = -10.0 oC Mass of hot water = 200 g And…

Q: How much heat energy is required to boil 66.7 g of ammonia, NH3? The molar heat of vaporization of…

A: Mass of NH3 = 66.7 g  Molar heat of vaporization = 23.4 KJ/mol

Q: 8. The heat of vaporization of benzene (C2H6) is 568 J/g. How much energy is needed to vaporize 4.5…

A: Chemical formula of benzene is C6H6. Mass of 4.5 moles of benzene = moles x molar mass = 4.5 x 78 =…

Q: Which of the following substances (initially at room temperature) dose require the greatest amount…

A: Higher the boiling point greater will be the amount of heat required to melt 1 mol of solid

Q: B. If 25.0 kJ of heat is lost by 0.500 mol of substance A initially at 110 °C, what is the final…

A: At 110oC the state of the substance is gas. The boiling point of the substance is 78oC. Hence when…

Q: A. What is the temperature of fusion, T(fusion) of the substance? B. What is the temperature of…

A: (A) At the temperature of fusion, the solid gets converted to liquid (melting point). From the…

Q: Determine the amount of energy required to cool down 450.5 g of liquid iron at 1853 Degree C to 25…

A: The heat required or released to change the state of a particular substance, there are two types of…

Q: When 15.0 grams of steam drops in temperature from 275oC to 250oC, how much heat energy is released?…

A: Specific heat:  Amount of heat energy required to raise the temperature of one unit substance by one…

Q: Calculate the heat released when 65.5g of water at 55.5 ° C cools to ice at 0.0 ° C. (Given that the…

A: Here we are required to find the heat energy released during freezing process

Q: From 25.0°C to 94.5°C, 75.1 grams of ethanol are heated. What was the energy requirement in joules?…

A: The mass of ethanol = 75.1 g T1: Initial Temperature (25.0oC) T2: Final Temperature (78.4oC)[Boiling…

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.