Explanation:
Lead can cause effects on the blood, as well as the nervous, immune, renal and cardiovascular systems. ... Exposure to high amounts of lead can cause gastrointestinal symptoms, severely damage the brain and kidneys, and may cause reproductive effects. Large doses of some lead compounds have caused cancer in lab animals.
Copper oxide
As the gas in the air i'm assuming it's Oxygen.
I think the correct order according to increasing acid strength would be the one in option B. The order is:
<span>HBrO < HBrO2 < HBrO3 < HBrO4
</span>
The more oxygen atoms means the easier the hydronium ions is removed in aqueous solution since the oxygen has a high electronegativity.
The proton which is easily abstracted in
1-Benzyl-3-propylbenzene is the proton which is present on carbon atom in between two phenyl rings, or the central carbon which is shared by two benzene rings.
This easy abstraction of proton is due to its high acidity. Remember those species are always more acidic whose
conjugate base is stable. Like the acidity of carboxylic acid is due to stability of the
acetate ion.
In our case the stability of conjugate base arises due to
stability of negative ion due to resonance. As shown below, the negative charge can delocalize on both rings.
I have shown the resonance of negative ion on both Phenyl rings with
Blue and
Pink colors.<span />
2Al + 6HCl = 2AlCl₃ + 3H₂
m(H₂)=3M(H₂)n(Al)/2
m(H₂)=3*2.0g/mol*6.0mol/2=18.0 g