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28- Lui_____________________(vestirsi) sempre di moda. (fashionable)

48-Anna____________________________(aprire) la porta per me stamattina.

49-________________________________ tre ore ieri per pulire la casa ieri!

59- Signora, non firmi l’assegno (the check)!

14- Lucilla e’ cosi bella ___________Maria.

60- Giovanni, vai al ristorante adesso (now)!

Chemical bonds are based on ______.

Consider the spontaneity of a chemical reaction, or whether it will proceed on its own without an external input (e.g., energy). For a reaction that is spontaneous, which of the following are true statements?

Consider the Gibbs free-energy change (delta G), a measure of whether a reaction is spontaneous or requires an energy input to proceed. Match each delta G value with the correct description.

Ions and polar molecules are ______ and stay in solution because of their interactions with water’s partial charges.