Typical room temperature is 23°c. in a classroom at sea level, the atmospheric pressure is 1.00 atm, would the gas in a balloon held in this classroom be at stp?

No the given gas is not at STP.

Explanation:

According to avogadro's law, 1 mole of every substance occupies 22.4 L at STP and contains avogadro's number of particles.

Standard condition of temperature (STP)  is 273 K and atmospheric pressure is 1 atmosphere respectively.  

Given temperature :

1 mole of every gas occupy volume at STP = 22.4 L

Thus at STP, the temperature is 273 K and pressure is 1 atmosphere and the given gas is not at STP.

hurricanes form when warm, moist air from the ocean surface quickly rises into the atmosphere and forms storm clouds and rain. when the clouds are formed, heat is released which warms the cool air in the upper regions of the atmosphere so that the cycle can continue. which two phases of the water cycle are repeated in this process?