What is the enthalpy change in kJ when 276.6 g of steam condenses into water at 100. °C? The enthalpy of vaporization of water is 45.6 kJ/mol.

Q: Calculate the vapor pressure of acetone at 69.1 C.

A: A concept which is used  when heat and work is needed to be calculated in science and engineering.…

Q: Water has a molar heat capacity of 75.38 J/(mol · °C) and its vaporization enthalpy at 100. °C is…

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Q: ving information:

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Q: Calculate the total amount of energy (in kJ) necessary to raise the temperature of 2.00 L of ethanol…

A: The amount of heat energy required to change the state of a substance from a liquid into vapor or…

Q: Temperature

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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: 4. What is the minimum amount of ice at 0°C that must be added to the contents of a can of diet cola…

A: Heat released by diet cola = heat absorbed by ice  Heat absorbed by ice = heat required to transform…

Q: A 36.0 g sample of liquid water at 100.0oC is heated to 145.0 oC.   How much heat does the water…

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Q: A0 682 mol sample of liquid propanol (60.09 g/mol) is heated from 25.6°C to 322.7°C. The boiling…

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Q: H2O has a ΔHvap = 40.8 kJ/mol and a ΔHfus = 6.02 kJ/mol. The specific heat capacity of ice is 2.11…

A: The amount of heat absorbed to elevate the temperature of ice (Q1) at -42oC to 0oC is equal to…

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: 1. Calculate the quentity of energy required to change 27.5 g of liquid water to steam at 100 C. The…

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Q: Evaporation of sweat requires energy and thus take excess heat away from the body. Some of the water…

A: Heat required to raise the temprature of water from 3.8°C to 36.6°C is given by , Q = ms∆T ,where m…

Q: A sample of C.H.Br, has a normal boiling temperature of 131.5 °C. The enthalpy of vaporization for…

A: GivenA sample of , has a normal boiling temperature of 131.5 °C. The enthalpy of vaporization for…

Q: 4. Container A has 30 grams of water at 85 deg. C. Container B has 25 grams of water at 25 deg C.…

A: Colder water will warm and warmer water will cool down.  The whole mixture contain same temperature.…

Q: If 40.5 g of KCI are dissolved 250.0 g of water at 25.0 °C in an insulated container, a temperature…

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Q: The heat of vaporization of an organic solvent is 39.8 kJ/mol. Find the temperature in degrees…

A: The variation of vapor pressure of a liquid with respect to temperature is given by…

Q: 22) Evaporation of sweat requires energy and thus take excess heat away from the body. Some of the…

A: Two questions based on chemical thermodynamics, which are to be accomplished.

Q: An instant pot pressure cooker has become popular in recent years.  Given that the enthalpy of…

A: Given data set: Atmospheric pressure (P1) = 1 atm The pressure inside instant pot cooker (P2) = 3.38…

Q: The following information is given for ethanol at 1 atm: Boiling point = 78.40°C Heat of…

A:

Q: A 0.439 mol sample of liquid propanol (60.09 g/mol) is heated from 25.6°C to 328.3PC. The boiling…

A: Answer: This is a three step process 1. Heating of liquid propanol to its boiling point 2. Phase…

Q: After an afternoon party, a small cooler full of ice is dumped onto the hot ground and melts. If the…

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Q: How much energy is needed to completely boil away 250 g of 40oC water into 100oC water vapor?

A: Q =q1 + q2  q1 = heat required to warm the temperature  q2 = heat required to vapourize the water…

Q: A liquid has a ΔH°(vaporization) of 33.3 kJ/mol and a boiling point of 125°C at 1 atm. What is its…

A: Vapor pressure is a thermodynamic equilibrium with its concentration at temperature is a closed…

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: Calculate the energy (in kcal) required to convert one ice cube that was made by freezing 72 mL of…

A: Given: Volume of water used = 72.0 mL. Initial temperature of ice = -36.0 oC And the final…

Q: Calculate the heat in kJ for 175 g of water vapor condensing to liquid water from 228.0 oC to 175.0…

A: Given: Mass of water vapour = 175 g Initial temperature (T1) = 228°C Final temperature (T2) = 175°C…

Q: How many KJ of heat are needed to raise the temperature of 10.0 Kg o fliquid water from 24.6 to…

A: The relationship between heat and change in temperature is given by

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.