a laboratory analysis of a sample finds it is composed of 38.8% carbon, 16.2% hydrogen, and 45.1% nitrogen. what is its empirical formula? give your answer in the form c#h#n#, where the number following the element’s symbol corresponds to the subscript in the formula. don’t include a 1 subscript explicitly. for example, the formula ch_2o would be entered as ch2o.

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

In john watson's "little albert' experiment, what was the ucs? select one: a. white rat b. loud noise c. little boy d. anything white and furry

Abacterium was found to contain a sequence of atcgggatcct in its genome. a few generations later, the sequence was found to be atcatcct. what type of mutation caused this change in the bacteria? a. duplication b. insertion c. inversion d. translocation