PLEASE HELP I WILL GIVE BRAINLIEST In the compound iron (III) oxide, also known as rust, the mass ratio of iron to oxygen is 7.0:3.0. A 33-g sample of a compound composed of iron and oxygen contains 10. g of oxygen. Is the sample iron (III) oxide? Explain your answer. (Hint: Turn the whole number ratios into unit ratios.) Show your work.

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