VERIFIED Chemistry OBJ:
1-10: ACCDDAADAA
11-20: DCDABBDCAA
21-30: CBCBCCCADB
31-40: CCBDCCBACD
41-50: CBDA.C....
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1a)
Compound is a Chemical substance composed
of many identical molecules (or molecular
sentities) composed of atoms from more than
one element held together by chemical bonds.
1b)
i. Initiation
Ii. Hydrogen abstraction
1c)
i. Iron
Ii. cobalt
1di)
Zn(s) + 2AgNO3--->Zn(NO3)2 + 2Ag(s)
(1dii)
I. Ag is reduced
II. Zn is oxidized
(1e)
16
O - 90% abundance
8
16
O - 10% abundance
8
= The relative atomic mass Ar = (16×90/100) +
(18×10/100)
= 1440/100 + 180/100 = 1440+180/100
= 1620/100 = 16.20
(1f)
The ores of iron are:
-Hematitie(Fe2O3)
-Magnetide(Fe3O4)
(1gi)
Biotechnology is the optimism exploitation of
biological processes for industrial and other
purposes. It is the branch of science that
exploits microorganisms fot the production of
antibiotics, hormones, etc.
(1gii)
Antibiotics
(1h) An element is a substance which can not
be further divided by an ordinary chemical
reaction.
(1i)
- fossil fuel for burning
- Biomass burning
- wetlands
(1j)
It is because the dipole induced dipole bonds
are stronger in iodine than in bromine and than
in chlorine ie there are more electrons in
iodine than in bromine and that in chlorine
(2a)
It means that the standard electrode potential
difference set-up between Zinc and one-molar
solution of its ion at 298K
(2b)
(i) Zn²(Aq) + / Zn(s) ---- cathode
Cu/ Cu²+(aq) ------- anode
(ii) Zn²+(aq)/Zn(s) // Cu / Cu²+
(iii)
At the cathode ---- reduction
At the anode ----- Oxidation.
(iv) EΦ = EΦ - E
= 0.34-(-0.76)
= 0.34+0.76
= +1.10V
[4/10, 11:50 AM] Adeola $$: (2ci)
- Chemical and allied products industries
- sunshine oil and chemical industries
- Eleme petrochemical industries
(2cii) source of raw materials
Nearness to market
Source of amenities
(2ciii)
-Pollution of air (surrounding)
-Land excavation and improper with disposal
(2di)
Ag2O(s) +H2O2= 2Ag(s)+ O2(g)+H2O(l)
(2dii)
