Which type of reaction is represented by this graph? Potential energy
Reaction progress
A. Decomposition
O B. Endothermic
C. Synthesis
o
D. Exothermic

Plss anybody know how to do this? ? i need the answers from a through d

On a day when the barometer reads 75.23 cm, a reaction vessel holds 250 ml of ideal gas at 20 celsius. an oil manometer ( ρ= 810 kg/m^3) reads the pressure in the vessel to be 41 cm of oil and below atmospheric pressure. what volume will the gas occupy under s.t.p.?

What’s #16 asking me and how do i solve it?