To change phases, a substance either gains or looses energy. If a substance gains energy, it will become more exited and the molecules will spread out. An example of this is water boiling into gas. If it looses energy, the molecules will become less exited and come closer together. For example, freezing water takes away energy from molecules, changing it from liquid to solid
When a gas reaches a gold surface, it looses much of the energy that it had, so the gas condenses from gas to liquid phase.
Hope this helped!! :D
I think you were doing it right. Just find something in your kitchen and google the chemical formula. And from that you can see the elements in it. For example:
Salt, NaCl, Sodium and Chlorine.
Baking Soda, NaHCO3, Sodium, Hydrogen, Carbon and Oxygen.
Vinegar, CH3COOH, Carbon, Hydrogen and Oxygen
Answer:
The boiling point of Kelvin scale is: 373° k
hope it is helpful to you
Answer:
S MgCO3 = 1.8708 E-4 M at 25 °C
Explanation:
S S S
⇒ Ksp = 3.5 E-8 = [ Mg2+ ] * [ CO32- ] = S * S
⇒ Ksp = 3.5 E-8 = S²
⇒ S = √3.5 E-8
⇒ S = 1.8708 E-4 M
