This is a reduction reaction as the oxide(oxygen) is taken away from the metal =]
105.50 grams of total object biomass or matter mixed together which is technically chemistry.
<u>Answer:</u>
Carbon and silicon both are tetravalent elements as compared to germanium, tin, and lead which are divalent.
That's because Ge, tin, and Pb show inert pair effect and has a greater nuclear effective charge on the 's' electrons due to poor shielding effect. .That's why these elements are not able to share their valence electrons while carbon and silicon does and show "catenation" which is the ability to form long chain molecules.
A closed system is completely closed to the outside environment. Every interaction is transmitted inside that closed system.
The first one is substance 3
The second one is Oxygen, Helium, and carbon dioxide
The third one is the oil floats on top of the water
