Working on a practice gizmo and confused by a few questions, theyre all related but different parts. Gizmo is about the waters acidity levels and the ways to minimize erosion in regards to shells. Some questions say what should be covered (etc. cause, equilibrium, reasoning, prediction) .
The Problem
What was causing the mussel shells to erode? _____
Equilibrium Why did pCO2 decrease in the tank with added CO3^2-? _____