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Which of the following is described by the equation H2O(s) heat H2O(l)?
The equation describes the process of ice (H2O solid) absorbing heat and melting into liquid water (H2O liquid) at its melting point temperature.
Conclusion of determination of melting point?
Melting point of a solid involves the temperature changing from solid to liquid. Solid and liquid exist in in-equilibrium. The liquid to solid process is known as freezing or crystallisation.The principle of observing the disappearance rather than the forming of ice is known as the melting point.Source(s):Wikipedia
Which molecular solids has the highest melting point?
if this is from castlelearning its choices 1. H2O(s) 2. Na2O(s) 3. SO2(s) 4. CO2(s) the answer is choice 2 because sodium, Na, is a metal. When a metal is bonded to a nonmetal such as oxygen, an ionic bond is formed. Ionic compounds have high melting points. All of the other are nonmetal which mean they are convalent compounds and covalent compounds have low melting points. JgLy<3 :)
Why is melting point of magnesium less than calcium although melting point decrease down the group?
The melting point of magnesium is lower than calcium because although melting points generally decrease down a group, there can be exceptions due to variations in atomic size, packing efficiency, and bonding forces. In this case, the smaller size and stronger metallic bonding in calcium result in a higher melting point compared to magnesium, despite being further down the group.
Boiling and melting point of sulfur?
Belting point rhombic: 112.8°C. Monoclinic: 119.0°CBoiling point 444.6°CMelting Point: 112.8 °C (385.95 K, 235.04001 °F)Boiling Point: 444.6 °C (717.75 K, 832.28 °F)
Is freezing chemical or physical property?
I would say that freezing point is a boiling property because there is no scientific evidence to suggest that it is or indeed ever will be a chemical property. Freezing point is a chemical reaction. Therefor this is a debatable question. Different people may have different views. This is mine."Freezing point" is usually termed as "melting point" in scientific circles. Melting point is defined as the temperature at which the solid and liquid phase of a substance coexist at equilibrium under the pressure of their own vapors. Ice and water coexist at equilibrium at temperature of 32 degrees F when only their own vapor pressures are acting upon them. However, the temperature difference at atmospheric pressure is negligible. As you can see, melting point (freezing point) only depends on the physical conditions acting on the substance, therefore, melting point (freezing point) is a physical property. Melting point is effected (lowered) by the addition of other molecules or ions to the substance. This effect is physical because it depends only upon the number of particles (molecules etc) added and no chemical reaction is required.
Which of the following is described by the equation H2O(s) heat H2O(l)?
The equation describes the process of ice (H2O solid) absorbing heat and melting into liquid water (H2O liquid) at its melting point temperature.
What is the melting and boiling point of platinum and when was it discovered?
melting point is 1774 Celsius, boiling point is 3827 Celsius discovered in the year of earlly 1900's
What is the melting point of F2?
Melting point : -219.62 C Boiling point : -188.14 C
What has the author Gregory F Strouse written?
Gregory F. Strouse has written: 'Standard Reference Material 1747' 'Indium freezing-point standard--SRM 1745' -- subject(s): Standards, Effect of temperature on, Indium, Melting points, Freezing points 'Standard reference material 1744' -- subject(s): Aluminum, Standards, Freezing points, Temperature measurements, Thermal properties
What has the author David Namkoong written?
David Namkoong has written: 'Effect of microgravity on material undergoing melting and freezing' -- subject(s): Melting, Microgravity, Spaceborne experiments, Phase change materials, Freezing, Lithium flourides, Heat storage
How does freezing point get calculated if boiling point of an aqueous solution is given?
You can calculate the freezing point of an aqueous solution using the equation for colligative properties: ΔTf = i * Kf * m, where ΔTf is the freezing point depression, i is the van 't Hoff factor, Kf is the cryoscopic constant of the solvent, and m is the molality of the solution. By rearranging the equation, you can solve for the freezing point.
What temperature is half way between the freeze and boil point?
This question is poorly specified since it does not identify the substance whose freezing and boiling point s are being considered. Also, the questioner may not be aware of external factors (pressure) that impact on these temperatures. The midway point for pure water at 1 bar is 323.15 K (50 degrees Celsius, 122 deg Fahrenheit). The freezing and boiling points will change with pressure and so the midpoint will change. Other substances have different freezing/melting points and so different midpoints.
Conclusion of determination of melting point?
Melting point of a solid involves the temperature changing from solid to liquid. Solid and liquid exist in in-equilibrium. The liquid to solid process is known as freezing or crystallisation.The principle of observing the disappearance rather than the forming of ice is known as the melting point.Source(s):Wikipedia
What process by which a solid changes to a liquid is called?
The process by which a solid changes to a liquid is called melting. It occurs when the solid absorbs enough heat energy to overcome the forces holding its particles together in a solid state, allowing them to move more freely and transition into a liquid state.
O is F P of W on C S?
0 = freezing point of water on Celsius scale
What is the difference between the melting point and slip point?
Melting point s can be "sharp" where the phase change occurs at a particular temperature, or the solid may soften and then melt over a range of temperatures. Conventionally melting point refers to the sharp melting point, and this is exhibited by pure chemical compounds that do not decompose. Slip melting point usually refers to a technique for measuring the point at which a waxy solid "slips" in a tube -waxy solids such as hydrocarbons produced from petroleum oil are mixture and melt over a range and this is near reproducible way of obtaining a diagnostic single "melt" temperature for the mixture.
