Examine the equation. c3h8 + 5o2 → 3co2 + __h2o in order to balance the equation, what coefficient must be placed in front of h2o?

a.8
b.4
c.3
d.1

Compare and contrast physical changes with chemical changes.

Analyze how limestone is weathered and identify the features that are formed as a result of this dissolution

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.