An oxygen-containing compound shows an absorption band at ∼1700cm−1 and no absorption bands at ∼3300cm−1, ∼2700cm−1, or ∼1100cm−1. What class of compound is it?

In a popular classroom demonstration, solid sodium is added to liquid water and reacts to produce hydrogen gas and aqueous sodium hydroxide. part a write a balanced chemical equation for this reaction. express your answer as a chemical equation. identify all of the phases in your answer.

The chemical bond connecting one nucleotide with the next one along the nucleic acid chain is called a

1) describe the physical layout of the ocean floor ? 2) explain how the dumbo octopus swims differently than other octopus species and why this would be an advantage in the aphonic zone . 3) why are the types of organisms that live at each underwater hot vent so dramatically different ?