El etanol (C2H5OH) se quema en presencia del oxigeno(O2)del aire para dar agua y dioxido de carbono

Explanation:

2C2H5OH + 6O2 > 4CO2+ 6H2O

Esa es la reacción equilibrada

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

answer; talc and gypsum;