<span>
C–H bonds in methane and O–O bonds in oxygen.
CH4 +2O2--->CO2 + 2H2O
</span>CH4 has only C-H bonds.
O2 has only O=O bond.
not 100% sure about significant figures. density might be rounded weirdly, not sure. Idk how to find hardness, so I just found the mineral before hardness, and used the hardness of that mineral
Answer:
Pain
Explanation:
the pain depends on u banging your head