A student wants to know which part of his local beach contains the most turtle nests during nesting season. He researches turtle nesting, makes a prediction to investigate based on his research and observations, and plans his experiment. He performs the experiment, and once his experiment is completed, he writes down his data and ends his study. What part of the scientific method is he missing from this investigation?

A). Analyze data and conclusion.
B). Construct a hypothesis.
C). Do background research.
D). Test with an experiment.

It takes 945.kj/mol to break a nitrogen-nitrogen triple bond. calculate the maximum wavelength of light for which a nitrogen-nitrogen triple bond could be broken by absorbing a single photon.

1. suppose a reaction mixture, when diluted with water, afforded 300 ml of an aqueous solution of 30 g of the reaction product malononitrile [ch2(cn)2], which is to be isolated by extraction with ether. the solubility of malononitrile in ether at room temperature is 20.0 g/100 ml, and in water is 13.3 g/100 ml. what weight of malononitrile would be recovered by extraction with (a) three 100-ml portions of ether and (b) one 300-ml portion of ether? suggestion: for each extraction, let x equal the weight extracted into the ether layer. in part (a), the concentration in the ether layer is x/100 and in the water layer is (30 x)/300; the ratio of these quantities is equal to k 20/13.3.

Avariable that is not being directly tested during an experiment should be changed varied experimented controlled