How many moles are in 2.8x10^10 particles of s?

Which of the following best describes the formation of plasma?

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.

Chlorophyll a had the molecular formula c55h72mgn4o5 how many atoms are in this molecule