Suppose that 70g of a substance is dissolved in 100cm^3 of water at 80°c. how much of the substance, in grams, will precipitate when the solution is cooled down to 30°c?

a. 55
b. 45
c. 10
d. 30
e. 25

Why is the road most slick when it first begins to rain? a. oils the road has absorbed begin to float. b. the water has not had time to run off. c. a higher concentration of dirt makes the road more slick. d. none of the above

Imagine a 28-year-old man named keith is about to be released from prison after serving a seven year sentence. keith is not sure where to start when he gets out. the lease on his apartment and his job are both long gone. he has no immediate family to get him a hand, he will be completely on his own. what types of things do you think he might need with once he is released?

Which area of the mind works based on the reality principle? id ego superego conscience