Question

The temperature at which water boil depend on the pressure the water is under . At sea level the pressure is 100kPa,water boil at hundred degree Celsius the pressure in the pressure cooker is greater than 100kPa and boiling point of water is greater than hundred degree Celsius .

on the mountain top at the altitude of 7700 m the climber found that his fuel store couldn't raise the temperature of boiling water above 75 degrees celsius best explanation explanation of this

first the stop didn't have the sufficient oxygen 21 the few completely .

second the also called it absorb the heat from the water .

third the pressure was less than it was at sea level .

Fourth the air fresher was better than it was at sea level

Answer 1

3. the pressure was less than it was at sea level .

Must be correct answer as the Boiling point vary with pressure and at high altitude water boiling at low temperture.