Hello! Could somebody help? *spam answers not tolerated* How does the ocean affect the rate of accumulation of in the atmosphere?

increases it
decreases it
maintains it at a constant rate

The ocean is a large CO2 sink because of its large surface area. The CO2 emissions are caused by  human and manufacturing activities which some of them are absorbed in the ocean  because CO2 is partly soluble in water. Thus, the answer is CO2 is decreased in 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%