Professor Smith and Dr. Jones embark on a scientific expedition to Africa to study the Giant Western Eagle. They want to see if it is being classified correctly. They made many
observations of the Giant Western Eagle that are listed below. Which observation would
be most helpful for classifying this eagle correctly?
o It has long wide wings enabling it to fly long distances.
It builds its nest high in the trees
It likes to eat a variety of small mammals
O It usually has 2 or 3 offspring each year

The zinc within a copper-plated penny dissolves in hydrochloric acid if the copper coating is filed down in several spots (so that the hydrochloric acid can reach the zinc). the reaction between the acid and the zinc 2h+(aq)+zn(s)→h2(g)+zn2+(aq) . when the zinc in a certain penny dissolves, the total volume of gas collected over water at 25 °c is 0.947 l at a total pressure of 743 mmhg . (vapor pressure of water is 23.78 mmhg at 25 °c .) what mass of hydrogen gas is collected? answer in appropriate significant figures