Please help ASAP.. please

The boiling point of water on a mountain top is less than on the ground.

At sea level, atmospheric pressure is 14.7 psia and water boils at 212℉ (100℃).

At an elevation of 8,000 feet (2,438 meters), water boils at 197℉ (91℃) and pressure is 10.9 psia.

At an elevation of 10,000 feet (3,048 meters), water boils at 193℉ (89.6℃) and pressure is 10.1 psia.

out of these options:

ability to burn paper

pure sodium reacting violently with water

the boiling point of water

helium does not tend to react with anything

i would say this is a physical property:

helium does not tend to react with anything

why? :

i said helium does not tend to react with anything because well, it reacts to ! but ability to burn paper, pure sodium reacting violently with water, & the boiling point of water are chemical or

physical properties: the properties of a substance that can be observed without changing the chemical makeup of the substance

chemical properties: properties of a substance relating to the chemical nature and reactivity of the substance

the answer is d. 74.02