Consider the balanced equation below.
4NH3 + 302 → 2N2 + 6H20
What is the mole ratio of NH3 to N2?
A) 2:4
B) 4:2
C) 4:4
D) 7:2

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 role of the microscope world in creating new materials .

wher is the rest of the question