How is graphite different from other allotropes of carbon? a. Graphite forms only carbon atoms, without other atoms mixed in.

b. The carbon atoms in graphite are arranged randomly, without a crystalline structure.

c. The carbon atoms in graphite are packed extremely densely and tightly

d. The carbon atoms in graphite are arranged in widely spaced layers

Graphite is another allotrope of carbon; unlike diamond, it is an electrical conductor and a semi-metal. Graphite is the most stable form of carbon under standard conditions and is used in thermochemistry as the standard state for defining the heat of formation of carbon compounds.

he uptake of drugs from the intestine is often strongly influenced by diffusion. for example, consider a water-insoluble steroid for treating inflammation that is solubilized in aggregates of detergent molecules, called micelles. these micelles, aggregates of 80 soap molecules, have a molecular weight of 24,000, a diameter of 2.6 nm, and a charge of -27. the positively charge ions (counterions) in this system are na".