How much energy is required to melt 13.00 kg of ice at 273 K? The specific latent heat of fusion of ice is 3.36 x 10^5 J kg-1. A. 1.19 x 10^9 J
B. 1174.83 J
C. 2.58 x 10^4 J
D. 4.37 x 10^6 J

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%

is there any options? maybe im just not seeing them but i need the options to

-love shrooms

i belive it is water