0
What is called to the amount of energy needed to melt one mol a substance?
Wiki User
∙ 8y ago
First things first: it's actually spelled "enthalpy", which might be why you're not finding it.
If you want a number, you will need to specify a substance.
If you just want to know what it means, then in simple terms it's the amount of energy required to evaporate one mole of the substance.
Wiki User
∙ 8y ago
Wiki User
∙ 8y agoThe molar enthalpy of vaporization is the heat necessary to transform 1 mole from a liquid in a gas, at constant temperature and pressure.
Wiki User
∙ 11y agomolar heat of vaporization
Wiki User
∙ 8y agoThis is the molar heat of fusion.
Wiki User
∙ 11y agoNo
Add your answer:
Earn +20 pts
The amount of energy needed to move an electron from one energy level to another is an?
The amount of energy needed to move an electron from one energy level to another is called a quantum.
The minimum amount of energy needed to start any reaction?
activation energy
What best describes the enthalpy of formation of a substance?
The energy change that happens when a substance forms from its elements (APEX)
What is molar heat?
Different substances have varied molar heat capacities. The molar heat capacity of a substance refers to the amount of heat energy needed to raise 1 mole of that substance by 1 degree Celsius.
What does the activation energy for a reaction represent?
Activation energy is the amount of energy needed to start a reaction.
What term describes a substance rhat lowers the amount of energy needed to start a chemical reaction?
This substance is called a catalyst.
What is the amount of energy required to raise the temperature of 1 kilograms of a substance by 1 kelvin is called?
Specific heat is the amount of heat needed to melt one kilogram of a substance...heat of fusion
What is the name of the energy needed to change a substance from a liquid to a gas?
The energy needed to change a substance from a liquid to a gas is called the enthalpy (or heat) of vaporization.
What term describes a substance that lowers the amount of energy needed to start a chemical reactions?
Catalyst
What term describe a substance that lowers the amount of energy needed to start a chemical reaction?
Catalyst
The amount of energy needed to move an electron from one energy level to another is an?
The amount of energy needed to move an electron from one energy level to another is called a quantum.
The minimum amount of energy needed to start a chemical reaction is called?
The activation energy.
The minimum amount of energy needed to start any reaction?
activation energy
Is the amount of energy needed to cause a chemical reaction to start called activation energy?
yes
The amount of energy needed to cause a chemical reaction to occur is the?
The amount of energy necessary to cause a chemical reaction to occur is called activation energy.
Why is heat energy needed to melt a solid. What is this heat energy called?
the energy that goes into changing a substance from a solid to a liquid (melting) is called the latent heat of fusion.
What is the amount of energy needed to change the temp of a substance called?
The specific heat is the amount of heat per unit mass required to raise the temperature by one degree Celsius
