Nitrogen-fixing bacteria convert atmospheric nitrogen (n2 gas) into ammonium (nh4). why is this conversion important for life on earth?

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

5.6⋅10−^19  j

do you need the explaination?

c. 4.54 x 10–12 j happens to be correct