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Mendeleev's periodic table became widely accepted because it correctly predicted the properties of elements that had not yet been discovered.
Answer:
A- 1 hydrogen, 1 oxygen, 1 chlorine
B- 2 Nitrogen, 4 hydrogen
C- 2 sodium, 2 oxygen
the last one i dont understand because im in middle school and i havent learned that... :/
Explanation:
Exotoxin is a toxin secreted by bacteria. exotoxin can cause damage to the host by destroying cells or disrupting normal cellular metabolism
Answer:
2K + Br2 --> 2KBr is the answer
