Answer:
The "2" tells us that there are 2 hydrogen atoms in this compound.
Explanation:
The mineral with Mohs hardness would be scratched because the mineral with Mohs 7 hardness is stronger than the Mohs 5 mineral. Eventually, that mineral would turn into dust if you kept rubbing it.
Answer:
-20.158ft-lb
Explanation:
Check the attached files for the explanation.