A balloon is filled with helium gas has a volume of 750 mL at a pressure of 1 atm. The balloon is released and reaches an altitude if 7,000 m, where the pressure is 0.52 atm. If the
temperature remains the same, what volume does the gas occupy? *
(1 Point)
Use the given equation to solve the question.
P. Vi
P2V2
nRT
n2R72

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%

distance, luminosity, brightness, radius, chemical composition, and temperature