How many valence electrons does a carbon atom have

0.2348 grams of pbcl2 used to form 44.0 ml of solution.

Which process describes vaporization that takes place below the surface of a liquid? condensation melting boiling evaporation

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.