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In this model ions are considered perfect spheres and therfore point charges. In this model ions have only electrostatic attraction with no covalent interactions.

A geostationary orbit is one that appears in the same location as seen from an observer on earth. This requires three criteria; It's orbital period must be 24 hours The orbit must be above the equator at aro...

Amino acids are the building bricks of life. Redundency occured with in their coding however. A single Amino acid may be coded for by more than one codon (a sequence of three nucleic acids) and therfore muta...

length x width = area (as rectangle) (x-4)(x-5)=12 x 2 -9x+20=12 x 2 -9x+8=0 (x-8)(x-1)=0 x=8 or x=1 <---- x can't be 1 as we would get negative length and width x=8

The most stressful parts of the IB exams (especially HL) are Papers 2 and (if HL) 3. Seeing as how you will only have about 30-40 minutes to write each essay, your 5 minutes of preparation time at the beginn...