Because they aren’t sustainable and they contribute to global warming, I think.
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Explanation:
The mass of one atom of calcium is the same as the molar mass of the calcium. Also, the atomic mass of calcium is 40.078 g/mol.
Answer:
Lithium does form a peroxide as well as an oxide on burning in air and I suspect the low temperature reaction with air forms a significant amount of peroxide.
The answer is letter (B).
The small intestine i think :) hope that helps
