If the volume of a gas was measured to be 1.5L with the initial pressure unknown. After the volume increased to 3.5L, the pressure was measured to be 1.3atm. What was the initial pressure?

if the temperature drops and becomes cool

then the atmosphere can be freezing as the water vapor in the air is at maximum (100%) and can be severely cold

also can be snowing lightly as the moisture in the air will start to solidify

and btw this is not chemistry but