For my note plz help faster

For the following reaction, 5.65 grams of oxygen gas are mixed with excess hydrochloric acid . assume that the percent yield of water is 86.4 %. hydrochloric acid(aq) + oxygen(g) water(l) + chlorine(g) what is the ideal yield of water ? grams what is the actual yield of water ? grams

Describe the difference between a. a hypothesis and a theory and b. an observation and an experiment.

Which of the following would be an accurate picture of the earth during the summer time of the northern hemisphere?