Which of the following describes water? A.>>>> is liquid over wide temp range; requires large amount of energy per gram to raise temp !!

B. weak cohesive forcd between molecules; liquid over wide temp range

C. has strong cohesive force between molecules; liquid over narrow temp range

D. is liquid over narrow temp range; requires small amount of energy per gram to raise temp​

On a mild saturday morning while people are working inside, the furnace keeps the temperature inside the building at 23degreesc. at noon the furnace is turned off, and the people go home. the temperature outside is a constant 16degreesc for the rest of the afternoon. if the time constant for the building is 3 hr, when will the temperature inside the building reach 18degreesc? if some windows are left open and the time constant drops to 2 hr, when will the temperature inside reach 18degreesc?