For a gaseous reaction, standard conditions are 298 K298 K and a partial pressure of 1 bar1 bar for all species. For the reaction C2H6(g)+H2(g)↽−−⇀2CH4(g) C2H6(g)+H2(g)↽−−⇀2CH4(g) the standard change in Gibbs free energy is ΔG∘=−32.8 kJ/mol.ΔG°=−32.8 kJ/mol. What is ΔGΔG for this reaction at 298 K298 K when the partial pressures are PC2H6=0.200 bar, PC2H6=0.200 bar, PH2=0.450 bar, PH2=0.450 bar, and PCH4=0.600 bar?

altitude, density, pressure

air gets less dense the higher the altitude and also the air pressure is less as altitude rises.

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%

d : a person who learns about the world by observing it. no that is not a smiley face

explanation: