When the TLC of the dyes were developed in the ethanol-water solvent system the Rf values were much higher than when they were developed in
the butanol-methyl ethyl ketone-water-ammonia solvent system. Explain why this might be true.

How does the principle of electromagnetism explain the interaction between earth’s magnetic field and the solar wind?

Why do oxygen have a strong attractive force for electrons

The solubility of barium nitrate is 9.02 g/100 g h2o at 20°c. a 15.2 g sample of barium nitrate is added to 200.0 g of water at 20°c. is the solution saturated, unsaturated, or supersaturated? a. unsaturated b. saturated c. supersaturated