What Communication system do submarines use ?
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Ответ:
uh
Explanation:
I think its like radar or something like that- im not too sure sorry
Ответ:
Acids and alkalis both contain ions. Acids contain lots of hydrogen ions, which have the symbol H+. Alkalis contain lots of hydroxide ions, symbol OH-. Water is neutral because the number of hydrogen ions is equal to the number of hydroxide ions.
Hope it helped! :)