You are on a mission to evaluate zinc deficiency in a 3rd world country. You draw whole blood samples into red top tubes on 20 children in a small village early in the morning before they have eaten breakfast and transport the tubes 100 miles back to the city hospital, where flame atomic absorption spectrometry is performed the following day. None of the children has a low zinc level; in fact, many have significantly elevated levels. Explain the results.

Is this a scientific model? use complete sentences to explain why or why not. a graphic organizer showing the water cycle

Sulfur dioxide and oxygen react to form sulfur trioxide during one of the key steps in sulfuric acid synthesis. an industrial chemist studying this reaction fills a 25.0l tank with 4.5 mol of sulfur dioxide gas and 4.5 mol of oxygen gas at 30.°c. he then raises the temperature, and when the mixture has come to equilibrium measures the amount of sulfur trioxide gas to be 1.4 mol. calculate the concentration equilibrium constant for the reaction of sulfur dioxide and oxygen at the final temperature of the mixture. round your answer to 2 significant digits.

What best discribes the relationship between wavelength and frequency in a electromagnetic wave