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True or false The molar enthalpy values and fusion stay the same if you were to reverse the process?
True. The molar enthalpy values for fusion (also known as the enthalpy of fusion) are independent of the direction of the process. This means that the enthalpy change for melting a substance is equal in magnitude, but opposite in sign, to the enthalpy change for freezing the substance.
Is molar mass is mass in grams of one kilogram of any pure substance?
No, molar mass is the mass in grams of one mole of a substance. One mole is equal to the molecular weight of the substance in grams.
At what temperature is the liquid and solid 1-propanol in equilibrium?
The equilibrium temperature at which liquid and solid 1-propanol coexist is its melting point, which is -126 degrees Celsius. At this temperature, the solid and liquid phases are in equilibrium, with the rate of melting equal to the rate of freezing.
Are the number of neutrons equal to the atomic number minus the atomic mass?
false
What is melting or boiling point?
The melting point is the temperature at which a solid changes phases into a liquid. This is a result of the highly structured atoms of the solid, which have very little kinetic energy beginning to gain energy and dissociate. The boiling point is the temperature at which a liquid changes into a gas. This happens when the atoms/molecules of a liquid gain enough kinetic energy to escape the liquid and move into the gaseous state.
What is its melting point when the freezing point of a substance is 68C?
The freezing point is 680C
Is the temperature at which a liquid and solid states of a substance are in equilibrium is the same as the melting point and freezing point of the substance?
Yes, the temperature at which the liquid and solid states of a substance are in equilibrium is the same as the melting point and freezing point of the substance. This is because at this temperature, the rate of melting is equal to the rate of freezing, resulting in a dynamic equilibrium between the two states.
True or false The molar enthalpy values and fusion stay the same if you were to reverse the process?
True. The molar enthalpy values for fusion (also known as the enthalpy of fusion) are independent of the direction of the process. This means that the enthalpy change for melting a substance is equal in magnitude, but opposite in sign, to the enthalpy change for freezing the substance.
What do melting melting point and freezing point have in common?
They have an equal value and are synonyms.
Can the temperature at which a substance melts is the same temperature at which it changes from liquid to solid?
Yes. Melting point is changing from a solid to liquid & freezing point is changing from a liquid to a solid. Both occur at the same temperature & these terms are usually used interchangably, although melting point is probably used more often than freezing point.
Is freezing point of a substance is equal the melting point of the same substance?
Yes, the freezing point of a substance is the same as its melting point. This is because both processes involve a change in state from solid to liquid or vice versa, and the temperature at which this occurs is the same for a specific substance under constant pressure.
Is the boiling point of something the same as the melting point?
The boiling point is the temperature at which the vapor pressure of the liquid is equal to the external pressure. It is also the condensation point. The freezing point is the temperature at which liquid and solid coexist in equilibrium. It is also the melting point.
What is freezing point equal to?
Yes, provided the environment is at the same pressure. Changing pressure (for instance, on top of a mountain vs. sea level) will change the freezing/ melting/ boiling points. For example, at 32 degrees Fahrenheit (0 degrees celcius), both liquid water and ice can exist, so it is the melting point of one and the freezing point of the other. Hope that clears things up. Cheers, Dave
What do the melting point and freezing point have in common?
The freezing point of an item can be equal to the melting point in some cases but not in all.the freezing point and the melting point both have to deal with temp.items with equal melting and freezing points:icemercuryacetic acid
What happens to the temperature when a substance is melting?
For most substances, it's the same temperature. For example, ice melts at 0°C (273K), and water freezes also at 0°C. A few substances, such as agar, have a hysteresis. For example, agar melts at 85°C; to solidify it again, you have to cool it down to about 32-40°C.
When 1 kg of a substance changes from solid to liquid at its melting point it must absorb an amount of heat equal to which of the following?
The heat absorbed during the melting process is known as latent heat of fusion. For 1 kg of a substance changing from solid to liquid, it must absorb an amount of heat equal to the latent heat of fusion for that substance at its melting point.
What temperature is gold at freezing point?
The boiling point of gold is 2807°C. The freezing point of gold is 1064.18°C.
