Base pairs of DNA are A with T, and C with G
here's how to remember:
Apple - Tree
Car - Garage
I believe the correct answer from the choices listed above is option A. The topic that the teacher is talking about would be distillation of a mixture. Gasoline is processed by distillation. Hope this answers the question. Have a nice day.
1 mole is equal to 1 moles Ammonium Sulfate, or 132.13952 grams