Explain how the data from Galileo’s early telescope
provided evidence for the claim that the sun
is the center of the solar system.
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Classify this reaction: 2al+n2-> aln.

Consider the reaction: n2(g) + o2(g) ⇄ 2no(g) kc = 0.10 at 2000oc starting with initial concentrations of 0.040 mol/l of n2 and 0.040 mol/l of o2, calculate the equilibrium concentration of no in mol/l how would this be done?

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