In comparison to an atom of 199f in the ground state, an atom of 126c in the ground state has

You have to convert 199F into Celsius to make a comparison. It has the equation of (T(F) – 32)/1.8. so,

T(C) = (T(F) – 32)/1.8

T(C) = (199F) – 32)/1.8

T(C) = 92.78C

The atom at 126C is more reactive than the atom at 199F.

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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%