Answer:
If the hydrated salt is overheated, it causes the anhydrous salt to decompose, causing the product to be lost as gas. The reported percentage of water loss will be too high because the gap between the initial measurement and final (which will be lower due to loss of sample) measurement will widen.
Answer:
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Dehydrogenation is catalyzed by Cu, Mo and Fe by changing their oxidation states.
So that ice would not melts and it helps to keep grip for walking or driving
Answer:
See Explanation
Explanation:
The kinetic energy of gas molecules is related to the temperature of the gas because temperature is a measure of the average kinetic energy of the molecules of a gas hence the lower the temperature of the gas the lower the average kinetic energy of the molecules of the gas.
The volume of a given mass of gas is directly proportional its absolute temperature(Charles's law). Hence, as the temperature of the gas gas decreases, the gas volume also decreases.
The number of gas molecules is totally independent of the temperature of the gas hence it stays the same.
As the temperature decreases, the number of collision of gas particles decreases as the kinetic energy of the gas particles decreases.
The pressure of a given mass of gas is related to the movement of gas particles. Hence, the lower the temperature the lower the pressure of the gas. Pressure and temperature are directly related hence pressure decreases as temperature decreases.