What is taking place in a reaction as the curve on a reaction pathway graph goes up? . a. heat is being released.. b. heat is being absorbed.. c. the reaction has stopped.. d. the reaction is slowing down.

B.Heat is being absorbed

Explanation:

A reaction pathway graph is essentially a plot of the reaction coordinate on the x-axis Vs the potential energy on the y-axis.

If the reaction progresses with an upward moving curve, this suggests that heat is being absorbed and the energy of the system increases. if the curve slopes downwards, this suggests that heat is being released.

where's the diagram?

1. for the first question, we must find the mass of the anhydrous salt, mgso₄. the molar mass for mgso₄·7h₂o is 246.47 g/mol, while that of mgso₄ is 120.37 g/mol.7.834 g mgso₄·7h₂o * 1 mol mgso₄·7h₂o/246.47 g * 1 mol mgso₄/1 mol mgso₄·7h₂o * 20.37 g mgso₄/mol = 0.647 g mgso₄

2. mass of water = mass of sample - mass of anhydrous salemass of water = 7.834 - 0.647 = 7.19 gpercent water in hydrate = 7.19/7.834 * 100 = 91.74%