Answer:
so, you're neon?
Explanation:
neon has an atomic mass of 20 and is a noble gas, lol
After the first half-life, 1/2 is unchanged. After the 2nd one, 1/4 remains. After the 4th one, 1/16 remains. So you have 4 half-lives in 48 hours, the half-life is thus 12 hours.
Answer:
Hydrosphere:ocean currents
Explanation:
Earth's biosphere has to do with the parts of the earth where life exists. The biosphere includes portions of the earth such as the lithosphere (the outer part of the earth), the atmosphere, the hydrosphere(the region of the earth's water resources).
Cyrosphere refers to those portions of the earth in which water is in solid form or frozen, such as sea ice, lake ice,glaciers and frozen ground. For example, the waters in the Arctic and in Antarctica. Related topics includes glacier thickness.
Geosphere is made up of the solid part of the earth; its rocks, minerals and surface and interior landforms. Related topics in the geosphere include plate tectonics, mountain formation, ocean ridges, earth's mantle. etc.
Hydrosphere refers to all the regions where water is found on the earth. It includes, surface water, underground water, ice as well as water vapor. A related topic is ocean currents.
Explanation:
1)Noble gases have stable valence electron of 2 and 8.
2)B- ionic compounds do not require sharing of electron.
3)B- sodium and oxygen will likely form a covalent compound.
4) C- potassium
5) A- polar bonding
6)
It is C) Fission.
Hope this helps