Caliche is made up mainly of sodium nitrate, which is soluble in water. You may assume that all the other substances present in caliche are insoluble in water. Describe the processes for obtaining pure, dry sodium nitrate crystals from caliche. Explain the purpose of each process.

As we move from left to right across the periodic table, what is the general trend? a) atomic radii increase. b) electronegavitiy decreases. c) nuclear shielding increases. d) metallic character decreases.

The organs inside the body and how they function together

Consider a culture medium on which only gram-positive organisms such as staphylococcus aureus colonies can grow due to an elevated nacl level. a yellow halo surrounds the growth, indicating the bacterium fermented a sugar in the medium, decreasing the ph as a result and changing the color of a ph indicator chemical. this type of medium would be referred to as a differential and enrichment culture.