1. How does the phosphorus cycle differ from both the Nitrogen and Carbon cycles? 2. Compare and contrast the terrestrial and marine phosphorus cycles and how are they related?

3. How is human activity impacting the phosphorus cycle?

4. How do the geochemical phase and ecosystem phases of the phosphorus cycle differ?

Particle model to predict what will happen if a sharp object creates a hole in the soccer ball

Sodium nitrite (nano2) reacted with 2−iodooctane to give a mixture of two constitutionally isomeric compounds of molecular formula c8h17no2 in a combined yield of 88%. draw reasonable structures for these two isomers. click the "draw structure" button to launch the drawing utility. place the two compounds in the appropriate boxes below.

In a ni-cd battery, a fully charged cell is composed of nickelic hydroxide. nickel is an element that has multiple oxidation states. assume the following proportions of the states: nickel charge proportions found 0 0.17 +2 0.3 +3 0.33 +4 0.5 (a) determine the mean of the nickel charge. enter the answer to 2 decimal places.(b) determine the cumulative distribution function of nickel charge.