Agas has a pressure of 0.4 atm at 41 °c. what is the pressure at standard temperature?
round your answer to one place after the decimal.

0.9 atm

Explanation:

The standard temperature and pressure (generally known as STP) is the freezing point of pure water at nominal conditions in the atmosphere (at sea level).  

In this sense, the standard temperature is ( or ) and the standard pressure is or .

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%