A hydrocarbon X which decolourizes bromine water but has no action on ammoniacal silver trioxonitrate (V) solution was found to have a molar mass of 56. (a)dedue the molecular formular of X.{H=1,C=12}
(b)Write the structure of two Isomers of X.

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.