Gustaf observes a chemical reaction between two substances in a glass beaker. while observing the reaction, he touches the beaker and notices that it feels warm. why does the beaker feel warm?
a. the beaker absorbed energy that was released from gustaf's hand.
b. the beaker released energy that was absorbed by gustaf's hand.
c. the beaker absorbed energy that was released by the chemical reaction.
d. the beaker released energy that was absorbed by the chemical reaction.

Explain the difference between an independent and dependent sample. choose the correct answer below. a. in an independent sample, the individuals are chosen without replacement; in a dependent sample, the individuals are chosen with replacement. b. in a dependent sample, one would use a two-tailed hypothesis test; in an independent sample, one would use a one-tail hypothesis test. c. a sample is independent when an individual selected for one sample does not dictate which individual is to be in the second sample. a sample is dependent when an individual selected for one sample dictates which individual is to be in the second sample. d. a sample is independent when an individual selected for one sample dictates which individual is to be in the second sample. a sample is dependent when an individual selected for one sample does not dictate which individual is to be in the second sample. independent samples are often referred to as matched-pairs samples.

How can the judiciary balance individual rights with the common good?

Black death spread because of what problem in medieval europe? which one is it i need the answer quick . a- overcrowded cities b-too many farm animals c-not enough qualified doctors d-all of the above