Determine from the balanced chemical reaction if
the derived mole ratio is correct or incorrect.
4Zn + 10HNO3 → 4Zn(NO3)2 + N20 + 5H20

Help again please

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%

1. they vary with a higher number because boiling is way hotter than melting

it forms an anion that has a larger radius. anions have a negative charge and are larger than the original atom.