1. 4 Layer of the sun that is known for its red color and can only be seen during eclipses 2. 3 contains the sun’s outer shell from which light energy is radiated 3. 2 layer of the sun where energy is transferred by thermal conduction 4. 1 the plasma that surrounds the sun
answered: Guest
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%
answered: Guest
They are all full and don't need any more electrons in there outer shell.