Iron reacts with oxygen at high temperatures to form iron(III) oxide. 4Fe(s)+3O2(g)⟶2Fe2O3(s)

Suppose 19.1 g
of iron (Fe)
is reacted with 17.9 g
of oxygen (O2).

Iknow the answer to 13 is b and 14 is d. i just need to know why the correct answers are correct

When determining the shape of a molecule, it is important to draw a lewis dot structure first in order to see the total number a. electrons within the moleculeb. bonding and unshared pairs around central atomc. unshared pair within the molecule( i really need it )

Which metal exist in liquid state and can be cut with knife ?