Is this answer correct? please help me out

Describe at least two advantages and two disadvantages of using hydropower as a source of energy.

Achemist reacted 57.50 grams of sodium metal with an excess amount of chlorine gas. the chemical reaction that occurred is shown. na + cl2 → nacl if the percentage yield of the reaction is 86%, what is the actual yield? show your work, including the use of stoichiometric calculations and conversion factors.

Atriple covalent bond involves two atoms sharing three pairs of electrons. true false