The heat of vaporization for ethanol is 0.826 kJ/g. Calculate the heat energy in joules required to boil 73.75 g of ethanol.

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: The main reason that distillation is a costly method for purifying water is the high energy required…

A: Distillation is the process in which the components of a mixture are separated on basis of different…

Q: Suppose that 1.11 g of rubbing alcohol (C3H8O)evaporates from a 70.0 g aluminum block. Aluminum has…

A: This question requires manipulation of units. At first, calculate the no. of moles of rubbing…

Q: How much heat would need to be removed to cool 50.3 g of water from 25.6°C to -10.7°C? Csolid =…

A: Mass of water = 50.3 g In the conversion of water from 25.6 ◦C to – 10.7 ◦C there is following steps…

Q: The energy needed to boil the water comes from where?

A: Water exists into three phases. These are ice, liquid water and vapors. To change one phase into…

Q: How much heat must be absorbed to warm 25.0g of liquid methanol (C= 2.53 J g/k) from 30° to its…

A: Heat required to rise the temperature of methanol, Q1 = mc∆T , c = 2.53 J/gm.K, m = 25 gm, ∆T =…

Q: How many joules of energy must be removed from 172 g of water at 27.1 °C to form ice at 0 °C?

A: Specific heat of substances.

Q: The melting point of calcium is 851 oC, its solid-state specific heat (Csolid) is 0.632 J/goC, and…

A:

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: Why is the heat of vaporization of water greater at room temperature than it is at its boiling…

A: The heat of vaporization or heat of evaporation is the quantity of heat required by the compound or…

Q: How much heat energy, in kilojoules, is required to convert 77.0 g of ice at −18.0 ∘C to water at…

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

Q: A 221.0 g sample of water at 24.5°C is heated to steam at 139.0°C. How much heat was absorbed?

A:

Q: How many joules of heat are required to melt 4.5 g of copper at a temperature of 1083°C? Use the…

A:

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: Boiling is the temperature at which the vapor pressure of the liquid exceeds the atmospheric…

A: At high altitude, atmospheric pressure is low and hence water boils at lower temperature.

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: 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 is required to melt 62.0 g of ice at its melting point? Express your answer…

A: Given, amount of ice =62.0 gramwe are asked to calculate the heat required to melt 62.0 gram of ice…

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 energy is needed to heat and then completely melt a 6.00 gram solid gold ring at an…

A: The required amount of energy from a solid state to the liquid state can be determined by the…

Q: (a) What phase change is represented by the “heat of fusion”of a substance? (b) Is the heat of…

A: a) Since fusion is the process where solid is converted into the liquid  hence the phase change…

Q: A 100.0-mL sample of water is heated to its boiling point. How much heat (in kJ) is required to…

A: Density of water = 1.00 g/mL Volume of water = 100 mL Heat of vaporization of water = 40.7 kJ/mol…

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 many joules of energy must be removed from 131 g of water at 14.5 °C to form ice at 0 °C? How…

A:

Q: Is the amount of latent heat associated with the process of deposition the same as or less than the…

A: Latent heat can be defined as the heat energy that required to convert a solid into a liquid or…

Q: How much energy in kilocalories is needed to vaporize 625 g of water? The heat of vaporization of…

A:

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: Caculate the mass of water that can be vaporized at its boiling point with 200kj of heat

A: The moles of water that can be vapourised is determined first by using the given heat value and the…

Q: The heat of vaporization for ethanol is 0.826 kJ/g. Calculate the heat energy in joules required to…

A:

Q: Calculate the heat required to vaporize 102 g of water at a temperature of 100oC   if the Heat of…

A: The heat of Vaporization: When we heat the liquid it gains energy and change to the vapor phase.…

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: What is the total amount of heat released in kilojoules when 28.0 g water at 65.0°C cools to form…

A: Given: Mass of water = 28.0 g. Initial temperature of water = 65.0 oC And final temperature of water…

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: what happens at the molecular level when the cold solid comes in contact with a hot liquid?

A: When a liquid is heated, its atoms vibrate faster about their fixed points.Heat causes the molecules…

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 heat change in joules for melting 12.0 g of ice at 0 ∘C

A:

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

A:

Q: Which phase change involves the absorption of heat?

A: A phase change is occured when a matter changes from one state to another state. The possible states…

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: Suppose you put four 150-mL bottles of water into an ice chest filled with crushed ice. If the…

A: Volume of 1 bottle = 150 mL Number of bottles = 4 Volume of water = 150 × 4…

Q: Determine the amount of heat, in kJ, required to heat 19 g of solid Ca at 125 C to 851C (still…

A: Given; mass, temperatures

Q: Explain what happens in the processes of vaporization and condensation?

A: To find: The explanation for the process of vaporization and condensation

Q: 4. How much heat, in kJ, does it take to heat 10.0 g of ice from -24.0°C to 75.0°C? 5. Calculate the…

A: The specific heat of water is 4.184 J/g °C. It is related with heat absorbed or evolved by system as…

Q: How much heat is required to vaporize 30 g of water at 100˚C?

A:

Q: What's the heat change in Joules for vaporization of 9.00g of water at 100 degrees celcius

A: Heat of vaporization of water is 2256 J/g.Thus, when 1 mol of water is vaporised, 2256J/g heat is…

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 is needed to melt 564 g of silver that is at 32.3 C?

A:

Q: how much energy is required to vaporize 125 g of benzene c6h6 at its boiling point 80.1 C

A: Given, Mass of benzene =125 g Boiling point =80.1°C

Q: The melting point of calcium is 851 °C, its solid-state specific heat (Csolid) is 0.632 J/g°C, and…

A: a) Since at its melting point, the solid can be directly melted  hence the heat required will be  Q…

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.