Inorganic Chemistry

Question 1

The molecular formula of chlorophyll

Answer 1

C55H72MgN4O5

Question 2

The empirical formula of the human DNA

Answer 2

C39H50O2N15P3

Question 3

The polymer most suitable for creating bulletproof vests

Answer 3

Polyethylene fiber

Question 4

Who discovered the elements Po and Rd

Answer 4

Marie Curie

Question 5

Who is the father of nuclear chemistry?

Answer 5

Otto Hahn

Question 6

Who discovered radioactivity?

Answer 6

Henri Bacquerel

Question 7

Who discovered transmutation?

Answer 7

Ernest Rutherford

Question 8

What intermolecular forces do
CH3CHOHCH3 have?

Answer 8

London Forces, Dipole-dipole Forces, and Hydrogen Bonding

Question 9

How many water molecules can
attach to methanol via hydrogen
bonding?

Answer 9

3

Question 10

Arrange the following substances
in order of increasing magnitude of
London Forces: GeCl4, SiCl4, and CCl4.

Answer 10

CCl4 < SiCl4 < GeCl4

Question 11

Which among the following relationships fully encapsulate the idea of the Second Law of Thermodynamics
A: delta S_system < 0
B: delta S_universe > delta S_system +
delta S_surrounding
C: delta S_universe > 0
D: delta S_system <deltaS_surrounding

Answer 11

C.

Question 12

Which among the following is the third gas that William Ramsay isolated with Morris Travers?

Answer 12

Xenon

Question 13

How many carbon atoms are there in
one molecule of “buckyball”?

Answer 13

60

Question 14

Which among the following statements regarding Sb-122 and Xe-136 is TRUE?
A: Sb-122 is more stable than Xe-136
because of its atomic number
B: Xe-136 and Sb-122 are radioactive
C: Xe-136 is more stable than Sb-122
because of the amount of its neutrons
D: Sb-122 and Xe-136 are both stable

Answer 14

C.

Question 15

What can detect the neutrons produced by U-235 undergoing nuclear fission?

Answer 15

A Geiger Counter containing Argon
and Boron trifluoride

Question 16

What is the phosphor of a scintillation counter intended for the detection of gamma radiation?

Answer 16

NaI Crystals containing Thallium
(II) Iodide

Question 17

Which among the following can cause the greatest damage to a
material assuming that all of them can penetrate it equally?
A: 100 rad Gamma rays
B: 100 rad Beta Emission
C: 100 rad Neutron Emission
D: 100 rad Alpha Emission

Answer 17

D.

Question 18

Which among the following can a Cherenkov Radiation be observed?
A: In the Water surrounding the core of a Nuclear Reactor
B: In the Mushroom Cloud produced after a Hydrogen Bomb Explosion
C: In a particle accelerator after the bombardment of two nuclides
D: In the Sun’s Corona during a Solar Eclipse

Answer 18

A.

Question 19

Across the three most notorious accidents regarding nuclear power plants: Three Mile Island, Chernobyl, and Fukushima, what is the most common cause for their failure that led to several environmental problems?

Answer 19

Loss of proper cooling and/or
moderator

Question 20

The Bataan Nuclear Power Plant is planned to be retrofitted in hopes of using it for the first time. One point of concern is the material that would be used in the outer portions of the room housing the fuel rods. If the radiation coming from the fuel rods
would be a strong beta emission, what material should be utilized?

Answer 20

8.0 mm of Lucite

Question 21

For a criminal case, two men are
interrogated in regards to an
attempted poisoning of a police
officer. During the investigation, it
was found out that both men had traces of Polonium-210 on their hands while a third accomplice of theirs had Po-210 on his clothes. Through analysis of the police officers stomach content, it was confirmed that he had ingested Po-210. Which among them is/are bound to die if not properly treated?
A: The police officer only
B: The two men and the third accomplice
C: The police officer and the two men
D: All four of them

Answer 21

A. The police officer only

Explanation: Po-210 undergoes alpha decay (Alpha particles have the lowest penetration but the highest biological destruction, thus deadly when ingested only)