2. Landmasses and bodies of water affects typhoon. Whichof thesedifferentiate the characteristics of landmasses and bodies of water? A. Landmasses have more water vapour than bodies of water,

B. Landmasses produce strong wind and heavy rain while bodies of
water cannot.

C. Landmasses strengthen typhoon while bodies of water disrupt
the spin of a typhoon.

D. Landmasses disrupt the spin of a typhoon while bodies of water
strengthen typhoon.

i think

D. Landmasses disrupt the spin of a typhoon while bodies of water

strengthen typhoon.

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%