Use the Classius equation to calculate the pressure in torr of a system at 300 K for ether knowing that the normal boiling point is 319 K and the delta H the heat of vaporization) is 29.69 kl/mol
403 ton
120 ton
1000 7 ore
450 for

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