Explanation:
A single-replcaement reaction is a chemical reaction in which one element replaces another in a compound.
A double replacement reaction is a reaction in which the metals in two ionic compounds exchange partners.
The Answer You Are Looking For Is.......
b) 3
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Explanation:Photosynthesis is important because the earth and all of the creatures in the sea and land need the plants to be able to feed themselves with the help of the sun and with cellular respiration, those plants are able to take in the carbon dioxide that we give and make into oxygen with we need. there fore without them we would not be able to exist.
The answer is (2) equal to. In redox reactions, you can't just lose electrons somewhere. If an electrons is lost by one, it must be gained by another. Hence, the importance of balancing redox reactions.
Answer:
I learnt k,l,m
Explanation:
so 1-3periods have klm and after that klmn
