Andrei stopped. He needed a 9.00 average to get into his desired faculty. His scholarship depended on it. "How do you know the questions?"

Detailed explanations of reversible reactions, Le Chatelier's principle, and acidity/basicity constants ( pOHp cap O cap H

Andrei gathered his things. He walked out of the room, the cool hallway air hitting his face. He checked his phone to see if the weird PDF had magically reappeared.