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The higher the molar mass, the higher the melting point. This is because molecules with higher molar mass have stronger Van der Waal's (London) forces, making it more difficult to overcome(thus the higher melting point). However, this is true only when the Van der Waal's forces are the ONLY intermolecular forces.
Wiki User
∙ 13y ago
Wiki User
∙ 12y agoFor nearly all substances, the melting point temperature increases with pressure. This is to be expected since at higher pressures, there is more force pushing the molecules together and helping to keep them in their fixed position in the solid - thus it takes more energy - a higher temperature - to overcome that force and allow the molecules to break free of their fixed positions and flow as a liquid (melt).
Certain regions of the ice/water phase diagram defy this - near the ambient melting point of water, increasing the pressure will actually encourage the ice to melt since the liquid is less dense than the solid.
Wiki User
∙ 12y agoMelting point does not depend on the solids mass, because it is an intensive property (also called a bulk property, intensive quantity, or intensive variable), which means it is a physical property of a system that does not depend on the system size or the amount of material in the system: it is scale invariant.
Wiki User
∙ 7y agoNo, it is independent of quantity. Melting point is a temperature, and a substance always melts at the same temperature under the same conditions. What does vary with quantity is the amount of heat you have to supply.
Wiki User
∙ 14y agoThe larger the molecular mass the higher the melting point will be and the longer it will take to melt
Wiki User
∙ 12y agono, it doesn't depend on the mass
Wiki User
∙ 14y agoWeight does not affect melting point.
Wiki User
∙ 11y agoIt doesn't.
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A solid substance with a mass of 200 grams is at its melting point temperature in a calorimeter While the substance changes from a solid to a liquid at the same temperature the 400-gram mass of water?
(4.184 J/g*degC)(400g)(40.0*degC-80.0*degC)+(200g)
How is temperature and thermal energy different?
Temperature is when the heat measures the average of the kinetic energy Thermal is averged together with kinetic engery, and all the others, to make thermal energy
How is heat different from the temperature of a body?
Heat is the total energy of molecular motion in a substance; temperature is a measure of the average energy of molecular motion in a substance. Heat energy depends on the speed of the particles, the number of particles (the size or mass), and the type of particles in an object. Temperature does not depend on the size or type of object. For example, the temperature of a small cup of water might be the same as the temperature of a large tub of water, but the tub of water has more heat because it has more water and thus more total thermal energy.
What is the molar mass of sulfur?
The molar mass of sulfur is 32.065. Molar mass is the mass per mole of a substance. In other words, Molar Mass = Mass/Amount of Substance.
What is the random molecular of a substance is greatest when the substance is?
It is greater when the substance is at a higher temperature. This is because the mean square speed of the molecules of a system is proportional to thermodynamic temperature.
What does solubility depend on?
Temperature and pressure
What properties of a substance does not change when the amount of the substance changes 1 mass 2 volume 3 temperature?
temperature
Does the density of a substance depend on mass and volume?
yes, to find the density, you do mass divided by volume
Why is density a characteristic of a substance and volume and mass are not?
The volume and mass of a substance are independent of the substance itself, but depend upon how much there is of the substance The density of a substance is the relation between how much volume you have of a substance and how much mass that volume has (and vice-versa). It is independent of how much there is of the substance and is thus a characteristic of the substance.
Why specific heat capacity increase with temperature?
Specific heat capacity is by definition a per-unit-mass property. Therefore it does not depend on the mass of the substance.
What conversion does the value of the conversion factor depend upon the formula of the substance?
mass of any substance to moles
What does the solubilty depend upon?
The solubility of a substance would depend on the nature of the solvent used, the temperature and the pressure of the environment.
What happens to the mass of gas when temperature is decreased by -273 degree celsius?
The Mass of a substance will not change with a reduction of temperature … even to -273C.
What is the temperature of solid turning to liquid?
It will depend on the chemical composition of the substance you are liquefying.
Is temperature an intensive property?
Temperature would be an intensive property, because it does not depend on the amount of substance being investigated.
How does mass effect thermal energy?
The mass has quite a big influence on the kinetic energy, cause its a factor in the formula: 1/2mv2
How do you find a mass of a substance dissolved in a solution given temperature and joules?
You can find the mass of a substance dissolved in a solution given temperature and joules using the relation q=mc(change in T). Where q is heat in joules, m is the mass, c is the specific heat capacity, and T is the temperature.
