an acid compound found in plants and vegetables such as rhubarb, has a mass percent composition of 26.7% c, 2.24% h, and 71.1% o. it can interfere with respiration and cause kidney or bladder stones. if a large quantity of rhubarb leaves is ingested, this acid can be toxic. the lethal dose (ld50) in rats for this acid is 375 mg/kg. rhubarb leaves contain about 0.5% by mass of the acid. what is the empirical formula of the acid?

In an ecosystem, marsh snails feed on phytoplankton and painted turtles feed on marsh snails. pollution has resulted in the depletion of phytoplankton. what effect would this situation likely have on the population of marsh snails and painted turtles? as phytoplankton were destroyed, the population of marsh snails would most likely then the population of painted turtles would mostly likely a. 1. increase 2. decrease 3. stay the same b. 1. increase 2. decrease 3. stay the same

Which situation is the best example of opportunity cost? a country chooses to produce bananas instead of wheat. a country chooses to invest in manufacturing and agriculture. a country chooses to specialize in producing paper products. a country chooses to export all of its products.

There are many factors that selective colleges take into consideration when deciding whether to admit a student list 4 of them