Which of the following describes the role of water in supporting the chemical reactions that occur within various life forms? it is used during photosynthesis to capture sunlight. it is used during photosynthesis to release oxygen. it adheres to the vascular tissue in plants. it allows sunlight to pass through it.

It is used during photosynthesis to release oxygen.

Explanation:

The photosynthesis occurs in the leaves of a plant, It is supported by green pigment known as chlorophyll.

During photosynthesis carbondioxide reacts with water to produce glucose.

The role of water is that it produces oxygen or releases oxygen during the reaction of photosynthesis.

The sunlight is being absorbed by the pigment chlorophyll.

The water molecule also provides electron during the process.

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%