is the observation that all observable galaxies tend to have their spectra shifted into longer wavelengths, and this shift grows at an increased rate with time, indicating that galaxies are undergoing accellerated expansion away from one another. Word Bank:
Closed UniverseBig BangBig CrunchBig RipCosmic RedshiftDark MatterDark EnergyCosmic Microwave Background RadiationUniverseOpen UniverseBig FreezeFlat Universe

Explain in detail of the four major scientific developments that spurred the formulation of the plate tectonics theory

Phosphoric acid is a triprotic acid ( =6.9×10−3 , =6.2×10−8 , and =4.8×10−13 ). to find the ph of a buffer composed of h2po−4(aq) and hpo2−4(aq) , which p value should be used in the henderson–hasselbalch equation? p k a1 = 2.16 p k a2 = 7.21 p k a3 = 12.32 calculate the ph of a buffer solution obtained by dissolving 18.0 18.0 g of kh2po4(s) kh 2 po 4 ( s ) and 33.0 33.0 g of na2hpo4(s) na 2 hpo 4 ( s ) in water and then diluting to 1.00 l.

What is the rate law for the uncatalyzed reaction?