When water is changed from a liquid to a vapor the chemical composition of the water does not change. When a water changes from a liquid to a vapor it still has the chemical composition H2O, thus making the change physical.
No, i think that they should have hyphenated it or something. Everyone should get credit for their own work. (lol says me, using brainly)
Oh ah oh ah cheer up baby
Answer : The solubility is, 
Explanation : Given,
= Henry's law constant of argon = 
First we have to calculate the pressure of argon.
Pressure of argon = 
Pressure of argon = 0.0093 atm
Now we have to calculate the solubility.
As, the solubility of argon in 1 atm pressure = 
So, the solubility of argon in 0.0093 atm pressure = 
= 
Thus, the solubility is, 