The enthalpy for boiling water is 40.7 kJ/mol. How much heat (in kJ) is required to boil 322.1 g of water?

Q: What mass of molybdenum (molar mass=95.94g/mol) is needed for the mercury to release 600.0J of…

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Q: What is the heat of vaporization for a liquid and why is it useful?

A: The vaporization is the transition process where liquid converted to vapor phase. The heat of…

Q: 13. A sample of ice at 0°C melts after absorbing 300,000J of heat. How many moles of H,0 are…

A: Thermodynamic is the branch of chemistry that mainly deals with the heat transfer between system and…

Q: How much heat would need to be removed to cool 29.5 g of water from 25.6°C to -10.7°C? Csolid =…

A: We have to predict the amount of heat removed from the water to have given temperature change.

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…

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Q: Explain how heat energy affects a substance. Describe how the particles change as the system is…

A: In this question, we have to find out the correct answer of given problem by the help of the…

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: How much heat (in kJ) would be required to convert 11.0 g of ice to water at 0.00°C? (∆Hfus = 6.01…

A: Since ice is solid and water is liquid, phase change takes place from solid to liquid and called…

Q: Based on the thermodynamic properties provided for water, determine the energy change when the…

A: Mass of water = 0.350 kg = 350 g Molar mass of water = 18 g/mol Moles of water = 350 g / 18 g/mol =…

Q: The enthalpy for boiling water is 40.7 kJ/mol. How much heat (in kJ) is required to boil 304.1 g of

A: The question is based on the concept of chemical thermodynamics. we have to calculate how much heat…

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

A: Given that:                       Mass of water = 1g = 0.001 Kg                    Initial…

Q: At a certain elavation, the boiling point of water is 98.5C. How much energy, in kilojoules, is…

A: Heat energy needed,Q= 11.0 KJ

Q: how much heat in joules is absorbed when 35.6 g of ice melts?

A: When a solid heated at its melting point it converts into the liquid state. The energy absorbed in…

Q: 125 g of dry ice (solid CO2) is dropped into a beaker containing 500 g of 66°C water. The dry ice…

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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.…

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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: Naphthalene is the main ingredient in mothballs and gives mothballs their characteristic smell.…

A: ∆Hsublimation(Napthalene)=73 kJ/mole Quantity of heat exposed = 25000 J = 25 kJ Molar Mass of…

Q: How much heat (in kJ) would be required to convert 26.0 g of ice to water at 0.00°C? (AHfus = 6.01…

A: Enthalpy of fusion∆Hfus is the amount of heat required to melt an unit mass of a solid at its…

Q: Given 352 mL of water at 26 °C in a perfectly heat-insulating container, how much ice at 0 °C (in…

A: M

Q: How much heat is required to change  266.4 g  of ice at 0 ° C to water at  0 ° C?

A: The mass of ice is = 266.4 g The temperature of ice is = 0oC The temperature of the water is = 0oC…

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: Calculate the heat energy released when 14.6 g of liquid mercury at 25.00 °C is converted to solid…

A: Given, Mass of mercury = 14.6 g Initial temperature, Ti = 25.00 °C = (273.15 + 25) K = 298.15 K   To…

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: Find ΔH, ΔE, q, and w for the freezing of water at -10.0 °C. The specific heat capacity of ice is…

A: Given:  Specific heat of ice = 2.04 J/goc Heat of fusion = -332 J/g

Q: Water can absorb or release large amounts of heat with little change in actual temperature. Why?

A: The specific heat of a substance is the amount of heat needed to raise or lower 1g of the substance…

Q: Water has a vaporization enthalpy of 2256 J/g, making it the largest of any molecular substance. For…

A: The enthalpy of vaporization depends on the intermolecular forces present between the molecules

Q: How much heat in cal is necessary to vaporize 685 g of h2o at 100 degrees c?

A: Latent heat is the amount of heat, which is released or absorbed by a substance when it is…

Q: How much heat (in kJ) would be required to convert 21.0 g of ice to water at 0°C?

A: Concept: The branch of chemistry that deals with the structure, properties and the reaction of the…

Q: 20 g of water is heated at an increase of 2°C per minute. If the amount of water heated for 10…

A: given data -   mass = m = 20-8 = 12 g. c = specific heat capacity = 4.18 J/g. oC temperature = T =…

Q: A 37.0 g sample of ice is held at -12.0 °C. If the ice absorbs 25800 J of heat, what state and…

A: We can determine the final state of the water from the final temperature.  The formula is : q = m ×…

Q: How much heat would be required to convert 15.1 g of ice to water at 0°C? (∆Hfus = 6.01 kJ/mol for…

A: molar mass of water = 18 g/mol Given information: ∆Hfus = 6.01 kJmol

Q: How much heat (in kJ) would be required to convert 15.1 g of ice to water at 0.00°C? (∆Hfus = 6.01…

A: For a given substance, the molar heat of fusion basically tells you one thing from two perspectives…

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: Determine the heat in joules to melt 52.75 moles of water given the heat of fusion is 6010 J/mol?

A: Heat of fusion is the amount of energy required for melting a given mass at its melting point…

Q: How much heat is needed to convert 35.6g of ice at 0°C to water at 27°C? AHfus of ice = 6.01 kJ/mol…

A: Heat required = Raise the temperature from 0 oC to 27 oC  Q = mc delta T

Q: A 193.1 g sample of water at 21.2°C is heated to steam at 131.5°C. How much heat was absorbed?

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Q: Calculate the total energy in kJ required to change the temperature of 591 g water from 96.0  oC to…

A: The process of cooling water from  96.0  oC to -111 oC will have below steps. 1) cooling hot water…

Q: The enthalpy for boiling water is 40.7 kJ/mol. How much heat is required to boil 820.1 g of water?

A: The given question can be solved by calculation the number of moles present in the given amount of…

Q: How much heat energy, in kilojoules, is required to convert 80.0 g of ice at −18.0 ∘C to water at…

A: Heat (q) is absorbed to convert ice to water.Here, we have to calculate the total heat consumed in…

Q: How much heat (in kJ) would be required to convert 23.4 g of ice to water at 0.00°C? (AHfus = 6.01…

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Q: How much heat (in calories) is absorbed when a 2.60 kg block of ice melts into a liquid? For water,…

A: Given: The mass of ice block, (m) =  2.60 Kg = 2600 g. The ∆Hfus for water=80 cal/g.

Q: How much heat energy, in kilojoules, is required to convert 59.0 g of ice at −18.0 ∘C to water at…

A: Specific heat of ice (Cp) = 2.10 J/g. oCspecific heat of water (Cp) = 4.18 J/g. oCheat of fusion…

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

A: heat required is calculated by,q=m c ⊿Twhere,m=mass of samplec=specific heat of substance ⊿T=the…

Q: Calculate the amount of heat required to completely evaporate 625 mL of water at 25°C. The enthalpy…

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Q: Determine the heat in kJ to heat 7.18 moles of ice from -29.286 degrees celcius to -2.357 degrees…

A: Mass can be determined using the below given equation,

Q: How many joules of heat are required to heat 25.2 g of ethyl alcohol from the prevailing room…

A: Heat required to change the temperature of a substance depends on the amount and the specific heat…

Q: Calculate the total energy in kJ required to change the temperature of 786 g water from 96.0  oC to…

A: Heat energy is released when the temperature of water changes from 96oC to -111oC. Firstly, the…

Q: How much heat (in kJ) would be required to convert 29.4 g of ice to water at 0.00°C? (∆Hfus = 6.01…

A: Given data,  Mass of ice = 29.4 g  ∆Hfus= 6.01 KJ/mol

Q: Find ∆H, ∆E, q, and w for the freezing of water at -10.0°C. The specific heat capacity of ice is…

A: Given:  Specific heat of ice = 2.04 J/goc Heat of fusion = -332 J/g Determination of delta H: The…

Q: To treat a burn on his hand, a person decides to place an ice cube on the burned skin. The mass of…

A: Mass of ice = 15.2 g = Mi = MwInitial Temperature of ice = Ti = -13.9 °CFinal Temperature of ice =…

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.