Look for signs of tilting, erosion, or folding. in the second column in chart a, write whether you think tilting, erosion, or folding took place. write tilting, erosion, or folding next to the letter of any rock layer that was formed when the tilting, erosion, or folding took place. if you see no evidence of tilting, erosion, or folding, write none.

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%

2b2t

explanation:

2b2t

it’s previous models   because when i picked that son of a gun’s answer it was wrong look for previous models because they might make it a different letter