Diatomic molecules will be Nonpolar when they are composed of only one element.
Answer:
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Atomic mass=no of neutron+no of electron
Atomic mass=25+30
Atomic mass=55
Answer : It increases
Rusting is where oxygen binds to iron and forms iron oxide.
So once iron rusts, there is oxygen, just not in air; it's in the iron oxide.
All reactions are reversible, albeit at different rates (the "irreversible" ones are still reversible, but much slower given that they take so much collision luck and energy.
