the phase change of boiling has more kinetic energy.
boiling is a liquid ---> gas
melting is solid ---> liquid
in a liquid, there is medium kinetic energy but when a liquid is boiled it turns into a gas and gains more kinetic energy, so there is more movement and the particles move freely as there is high KE.
in a solid, there is low kinetic energy as the particles vibrate in fixed positions. a solid gains kinetic energy when it becomes a liquid (melting) and there is medium kinetic energy.
there is a higher amount of kinetic energy when a substance is boiled.
therefore, the answer is boiling.
Answer:
By filtration
Explanation:
In the container, pour water and shake the mixture very well.
Pour the mixture in a clean container thro<u>ugh</u> a <em><u>filt</u></em><em><u>er</u></em><em><u> </u></em><em><u>tunnel</u></em> and steel with be the residue and aluminium will be in water.
Add dilute Ammonia solution to the filtrate to precipitate it and burn until aluminium solid is obtained.
Answer:C.people with perfect understanding of science.
The given mass of cobalt chloride hydrate = 2.055 g
A sample of cobalt chloride hydrate was heated to drive off waters of hydration and the anhydrate was weighed.
The mass of anhydrous cobalt chloride = 1.121 g anhydrate.
The mass of water lost during heating = 2.055 g - 1.121 g = 0.934 g
Converting mass of water of hydration present in the hydrate to moles using molar mass:
Mass of water = 0.934 g
Molar mass of water = 18.0 g/mol
Moles of water = 
