Yes oxygen is an element it is
the 8th element
the second period
16th group
noble gas configuration [He]2s^22p^4
Half reaction 1: 2Fe° → Fe₂³⁺ + 6e⁻ /×2.
4Fe° → 2Fe₂³⁺ + 12e⁻.
Iron is oxidized from neutral charge (0) to oxidation number +3, one iron lose three electrons, two irons lose six electrons and four irons twelve electrons.
Half reaction 2: 12e⁻ + 3O₂ → 2O₃²⁻
Oxygen is reduced from neutral chage to oxidation number -2, one oxygen gain two electrons, six oxygens gain twelve electrons.
Balanced chemical reaction: 4Fe + 3O₂ → 2Fe₂O₃.
(A.) Nickel and oxygen reacting chemically could create a compound. (Most likely some sort of oxide)
The pure silver is only made up of one element, so it can't be a compound.
The sandwich and all it's components may contain chemical compounds, but is not a compound in itself.
While it is possible that the material the nails are made out of is a compound, we are not given this information. Simply stating that nails (no matter the size) are in a box, does not make it a compound.
Explanation:
When a soil lacks earthworm, it will be poorly aerated and organic matter will be lacking.
Earthworms burrow through the soil and leaves holes and pores around in the soil.
- Soil air is an important component that makes up the soil.
- Earthworm are good burrowers that penetrates the soil and creates pores.
- This facilitate infiltration of water into the soil and also the circulation of air.
- Also, since they are decomposers, they the leave the soil rich and filled with organic matter.
learn more:
Soil formation brainly.com/question/2473178
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