A 285-mL flask contains pure helium at a pressure of 761torr . A second flask with a volume of 485mL contains pure argon at a pressure of 725torr . If the two flasksare connected through a stopcock and the stopcock is opened, whatis the partial pressure of helium? If the two flasksare connected through a stopcock and the stopcock is opened, whatis the partial pressure of argon? If the two flasksare connected through a stopcock and the stopcock is opened, whatis the total pressure?