Afew pieces of dry ice, co2(s), at -78°c are placed in a flask that contains air at 21°c. the flask is sealed by placing an uninflated balloon over the mouth of the flask. as the balloon inflates, the dry ice disappears and no liquid is observed in the flask.
state the direction of heat flow that occurs between the dry ice and the air in the flask.

periodic trends is an atom that gets larger as the number of electronic shells increase, the radius of atoms increases as you go down a certain group in the periodic table of elements. in general, the size of an atom will decrease as you move from left to right of a certain period.

warm front forms when a moist, warm air mass slides up and over a cold air mass. as the warm air mass rises, it condenses into a broad area of clouds. a warm front brings gentle rain or light snow, followed by warmer, milder weather.

hope i !