A 1-L flask is filled with 1.25g of argon at 25 C. A sample of ethane vapor is added to the same flask until the total pressure is 1.10atm .

A 1-L flask is filled with 1.25g of argon at 25 ∘C. A sample of ethane vapor is added to the same flask until the total pressure is 1.10atm . What is the partial pressure of ethane, Pethane, in the flask?