5) Listed below are solubility vs temperature data for an organic compound in water.
temp.
sol. in 10 mL water
0
0.15 g
20
0.30 g
40
0.65 g
60
1.10 g
80
1.70 g
a. Using the data in the above table, graph the solubility of the compound vs temperature. Connect the data points with a smooth curve.
b. Suppose 0.1 g of this compound is mixed with 1.0 mL of water and heated to 80° C. Would all of the compound dissolve? Explain.
c. The solution prepared in (b) is cooled. At what temperature will crystals of the compound appear?
d. Suppose the cooling described in (c) were continued to 0° C. How many grams of the compound would come out of solution?
The test to see what can be done.
I use Petroleum Jelly, (Vaseline) in my wax and it lowers the melting point a bit.
If the temperature is below the melting point then the element is a solid.If the temperature is above the melting point but below the boiling point, then the element is a liquid.If the temperature is above the boiling point, then the element is a gas.
Melting is a physical process.
the melting point is about 1000 degrees XDXD
The melting point of an impure compound will become closer to that of the actual melting point of the pure substance with recrystallization of your mixture.
It is 0.45 times the melting point of the metal.
The test to see what can be done.
assuming it is its own melting point NOTHING which is why its a MELTING point
is the temperature if the stiffer mantle above or below its melting point
Titanium has a high melting point of 3135°F (1725°C). This melting point is approximately 400°F above the melting point of steel and approximately 2000°F above that of aluminum.
The melting point is the temperature which a material, element or mixture, changes from the solid to a liquid. Therefore, all liquids become solids above the melting point.
If the temperature is below the melting point, you know it is in the solid state. If the temperature is below the boiling point, and above the melting point, you know it is a liquid. If the temperature is above the boiling point, you know it is a gas, etc. (Note: melting point is the same as freezing point).
is the temperature if the stiffer mantle above or below its melting point
Iodine melting point is above room temperature because its vapor pressure is less than one atmosphere.
I use Petroleum Jelly, (Vaseline) in my wax and it lowers the melting point a bit.
Heat it up to above 660.32 °C (melting point)