Which statement can best be concluded from the ideal gas law? a. the product of pressure and volume of an ideal gas is proportional to the absolute temperature. b. all collisions between atoms or molecules are perfectly elastic and are not the result of any attractive forces. c. the temperature, pressure, and volume of a gas are all related. d. the behavior of a gas under real conditions does not obey the ideal gas law.

Explanation:

Edg. 2020

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%

the awnser is group 12