The symbols that will complete the equation for single displacement reaction is 2NaCl + Br2
Explanation
The balanced equation is as below
2NaBr + Cl2→ 2NaCl + Br2
A single displacement reaction is type of reaction in which element react with compound and take place of other element in that compound.
Mostly the more reactive element displaces the less reactive elements from its compound.
Chlorine (Cl2) is more reactive than bromine(Br2) therefore chlorine displaces bromine from its compound.
Fluorine, I still remember this from my science fair
B. Heat is a form of energy so boiling it would increase energy. (I guess)
A chemical property of vinegar is its acidity.
Vinegard is a diluted acid. It is acetic acid in water.
Acetic acid is CH3 COOH.
The group COOH is the carboxylic group and is what tells you that a compound is an organic acid.
COOH disociates in water into COO- and H3O+.
CH3COOH + H2O ----> CH3COO(-) + H3O(+)
All the substances that dissociate in water producing hydronium groups (H3O+) are acids.
The substances ability to be disobedience in something else