22. A 3.5 kg iron shovel is left outside through the winter The shovel, now orange with I rust, is rediscovered in the spring. Its mass is 3.7 kg. How much oxygen combined
with the iron?

the "dirty dozen" chemicals banned in an international treaty are formally known as persistent organic pollutants, or pops. the united nations environment program provided this background on what they are and what they can do to humans and wildlife.

i hope this

idk what the options are but

these is a strong electrostatic attraction between the ions hence a lot of energy is needed to overcome this attraction

this is why the boiling points are so high

my teacher would say no s