Answer:
Chemical Change
Explanation:
This is a chemical change since the chemical structure of the components in the cheesecake changes when it is baked. This means that you can't make a baked cheesecake unbaked.
At STP, or standard temperature and pressure, 1 mol of any gas will take up 22.4 liters of space. Assuming STP, 4.5 moles of H2 will take up 100.8L.