Random Flashcards
(138 cards)
1
Q
Red Lead
A
Pb3O4 (on handbook)
2
Q
Can O2 be synthesized from N2?
A
Yes at high temperature (at stars)
3
Q
Dodecane’s state at room temperature
A
liquid, insoluble in water, soluble in hexane, less dense than water
4
Q
Adolf Baeyer’s contribution
A
Barbituric Acid (Urea + Malonic Acid)
5
Q
Ozone layer is located at the
A
Stratosphere
6
Q
Composition of Acid rain
A
Sulfuric Acid
Nitric Acid
7
Q
How to differentiate alkane, alkene, and alkyne?
A
Reaction with Br2
8
Q
Other term for earwax
A
Ozokerite
9
Q
Arrange in increasing toxicity
Arsenic, DDT/Cr, Dieldrum, Heptachlor
A
- Arsenic
- DDT
- Dieldrum
- Heptachlor
10
Q
Who discovered vulcanized rubber?
A
Charles Goodyear
11
Q
Use for treating Hg and Pb poisoning
A
EDTA
12
Q
C in Olvanil
A
C26 H43 N O3
13
Q
Primary use of Ethylene
A
Ripening of Fruit
14
Q
Number of I isotopes
A
37
15
Q
Other name for bulk temperature
A
Mixing-cup temperature
16
Q
The ratio of the gravities of Earth to Moon
A
6:1
17
Q
The ratio of the masses of Moon and Earth
A
0.0123
18
Q
Ratio of the masses of Sun and Earth
A
330,000
19
Q
Nujol Mull process?
A
Identifying the IR spectra of solids;
suspension in mineral oils
Nujol is a brand of oil
20
Q
Most oxidized nitrogen
A
nitrates
21
Q
Temperature of the moon
A
Day 127 degrees Celsius
Night -173 degrees Celsius
22
Q
Who proposed biological transmutation?
A
Corentin Kervran
23
Q
Component of sunblock that reflects light
A
zinc oxide
24
Q
coined the term serendipity
A
Horace Walpole
25
Discovered carbon-14 dating?
Willard Libby
26
ATP produced in glycolysis
2
27
Lee-Kesler method is only applicable for
non-polar and slightly polar compounds
28
Debye-Huckle Principle
Use to calculate the ionic strength and activity coefficients of ions in a solution
Assumptions:
1. Complete dissociation of electrolytes to ions in a solution
2. Solution of electrolytes is dilute (in the order of 10^-2 M)
3. Each ion is surrounded by ions of the opposite charge
29
Fatty acids contain how many C atoms
12-20 / carboxylic acids
30
Who discovered zeolite?
Cronstedt
31
Other name for Taurine
2-Aminoethane sulfonic acid
32
Synthetic dye
carotenoids
33
Combination of sulfur and rubber at high temperature
Vulcanization
34
Maximum density of water is at what temperature
4 degrees Celsius
35
Number of nitrogen forms in wastewater
5
36
Lapse rate
dT/dz
-1 degree Celsius/100 m - neutral stability
37
Closed cylinder piston
a. formation of liquid H2O
b. formation of gaseous H2O
a. negative △ng ; pistol will fall
b. positive △ng ; pistol will rise
△ng = gas moles in product - gas moles in reactants
38
Problem: Yield of Aspirin (75% yield)
25 g
39
Problem: Glutamic Acid (150 mg/L)
Problem: 0.01 mM Glutamic Acid
212 ppm O2
6.4 ppm NBOD, 14.4 ppm CBOD
40
Melvin Calvin
photosynthesis
41
Only natural amino acid with no chiral center
Glycine
42
Rochelle's salt
Potassium sodium tartrate
43
Palmitic acid
Stearic acid
Oleic acid
Linoleic acid
C16, saturated
C18, saturated
C18, unsaturated, 1 double bond
C18, unsaturated, 2 double bonds
44
Relationship of oil's saturation to melting point
greater saturation, higher melting point
greater double bonds, lower melting point
45
ksp of dissociation of cupric hydroxide to copper ion and hydroxide
Problem: Metal plating in Cagayan
ksp = 2x10^-19
[OH-] = 1.6x10-7 mol/L
46
The position and the velocity of an object (particles, atom) cannot both be measured exactly, at the same time, even in theory.
Heisenberg Uncertainty Principle
47
11-tetradecenyl acetate
C16 H30 O2
254 amu
48
Polychlorinated Biphenyl
Biphenyl - C12
C12 H6 Cl16
49
Half life of I-131
8 days
50
Number of Double bond/s in Geraniol
2
51
Constitutional Isomer
Same molecular formula
Same molecular weight
Different connectivity
Different physical properties
52
Who debunked the vital force theory in nature?
Friedrich Wöhler
Urea synthesis (heating ammonium cyanate forming urea)
53
Contaminant in the BTEx process
Sulfur
54
Formula of Alar
C6H12N2O3
Daminozide
55
Other name of Lecithin
Phosphatidylcholine
56
Capsaicin
Enzyme responsible for spiciness
C18 H17 NO3
57
SG of Ethylene Glycol
1.11
58
Drinking water with high _____ can cause methemoglobinemia or blue baby disorder to infants
Nitrate
59
Chemical name of Alum
Aluminum sulfate
Al2(SO4)3
60
Why is washing clothes with hard water NOT recommended?
Ca2+ and Mg2+ react with soap creating unwanted scum. Soap doesn't interact with the dirts
61
Formation of algae masses or algal blooms due to excessive nutrients in the water, e.g., nitrogen and phosphorus
Eutrophication
62
A method to measure total organic nitrogen and ammonia nitrogen in wastewater
Total Kjeldahl Nitrogen (TKN)
Also used in the food industry to measure the amount of proteins available in food
63
Biomagnification takes place as chemicals (trace metals) transfer from lower trophic levels to higher trophic levels within a food web, resulting in a higher concentration of apex predators.
Biomagnification
64
Minimata disease
Mercury
65
Itai itai disease
Cadmium
66
Dow Process
Extraction of bromine from brine solution
67
Type of ultrasonic flowmeter is a counter-propagating type
Time-of-Flight meter
Use to measure flow of clean liquids
68
Who suggested that pressure sensors can be divided to 4 categories?
Saunders
1. Utility
2. General Industry
3. Process Control
4. Precision and test
69
Melamine
C3H6N6
70
Other particle formed in the fusion of 2 protons to yield deuterium
Positron
71
Ion that would be isoelectronic with the noble gas xenon
I-
72
half life of rubidium 83
86.2 days
Problem: 0.6 mg , 63 days
73
Name the major physiologically active substance that comes from:
a. bark of willow tree
b. pituitary gland
c. sap of poppy
d. belladenna plant
a. Salicin
b. Beta-endomirphin
c. Opium
d. Atropine
74
Color of nickel chloride
yellow
75
organic reaction that converts an alcohol into an alkyl chloride using triphenylphosphine and CCl4
Appel Reaction
76
Indicators of EDTA
Eriochrome Black T
Calmagite
Solochrome
77
Taurine belongs to the acidic group of
-SO2 OH
78
Lapis Lazuli
Na4 S Si3 Al2 O12
79
Prussian Blue
Fe7 C18 H18
80
Emerald
Be3 Al2 Si O6
81
Percent atom recovery of Raschig process
17.3%
2NH3 + HCl +NaOH --- N2H4 +H2O +NaCl
82
Chemical for smell and taste
Rhodopsin
83
Isomers of xylene
3 isomers
Ortho/1,2-xylene
Meta/1,3-xyelen
Para/1,4-xylene
84
Ozonolysis
Cleaving an alkene or alkyne using ozone (O3)
double bond - formation of aldehyde
triple bond - formation of carboxylic acid
85
Keto-enol tautomerism
Alkynes + water = Enol (Hydration)
Enol (unstable) --- Ketone (Tautomerism)
86
Use of peroxide as a catalyst
Anti-Markovnikov's Rule
e.g., Br will attach to C with higher H atoms
Markovnikov's Rule
e.g., Br will attach to C with lower H atoms
87
IUPAC name of:
1. styrene
2. cumene
3. durene
4. mesitylene
1. vinyl benzene
2. isopropyl benzene
3. 2,3,5,6-tetramethylbenzene
4. 1,3,5-trimethylbenzene
88
Hydrazine + Carbonyl Compound
Hydrazone
89
Hexadionic acid
Adipic acid
90
Wolff Kishner reduction
Use of hydrazine (N2H4) in the presence of strong base (KOH) to reduce ketones
91
Main ingredient of automobile antifreeze
ethylene glycol
92
Esterification
alcohol + carboxylic acid = ester
R-OH + R-COOH = R-C (double bond O) -O-R
93
Cyclic ethers are known as
Lactones
94
Scent of banana
i-pentyl acetate or amyl acetate
95
Smell of:
a. acetic acid
b. butanoic acid
a. vinegar
b. rancid butter (butyrum)
96
Facultative stabilization pond treats sewage using
Both aerobic and anaerobic bacteria
97
Treatment to destroy bacteria, viruses, and other microbes, as well as remove irons, manganese, and H2S.
Chlorination
98
First slow sand filter was installed in
London, England
It only uses sand as filter media
99
Rapid sand filters are cleaned in place by forcing water upward through the sand. This process is called
Backwashing
100
Formula for membrane process flux
J = Q/A = △P/μ(Rm)
101
Calculate the volumetric flow rate of leachate through a compacted clay liner if the area of the landfill is 21 ha and the liner thickness is 1.3 m. The hydraulic conductivity is 2.5 × 10−10 m · s−1. Assume that the
head of water is 0.8 m
2.8 m3 · day−1
102
A landfill that is 12 ha in area has a liner of thickness 0.9 m. Each year 1700 m3 of leachate is collected. The hydraulic conductivity of the liner is 3.9 × 10−10 m · s−1. What is the head of water above the liner?
1.04 m
103
The Nairyosangha landfill located in Peshdadians serves a population of 562,400 people generating MSW at a rate of 1.89 kg · capita−1 · day. The volume of the landfill is 11,240,000 m3. At the present time, 63% of
the landfill is used. The ratio of cover to compacted fill is 1.9. Determine projected life remaining for the landfill. Assume the density of the compacted waste to be 490 kg · m−3
2.76 years
104
Professor Dexter has made measurements of her household solid waste, shown in the following table. If the container volume is 0.0757 m3, what is the average density of the solid waste produced in her household during the period of time from March 18th through April 8th? Assume that the mass of each empty container is 3.63 kg.
58.4 kg/m3
105
Clean Air Act of the Philippines
RA 8749
106
Ecological solid Waste Management Act
RA 9003
107
Smokey Mountain
Open dumping site; illegal
108
Persistent Organic Pollutants
Stockholm Convention
Also called Dirty Dozens
109
Only cycle that doesn't involve the atmosphere as its sink or source
Phosphorus cycle
Source: Lithosphere
Sink: Hydrosphere
110
Discovered the first structure of benzene
August Kekule
111
Contributions of Adolf Wilhelm Hermann Kolbe
1. Structural theory
2. First to apply the term "synthesis"
3. Carbon Disulfide --- Acetic Acid (CO2 raw)
111
Coined the termed Isomerism (isomers)
Jons Jacob Berzelius
112
Constituted the term resonance to account the shortcomings of the Lewis structure
Linus Pauling
113
Pioneered the use of curly arrows to denote the movement of electrons in resonance structures
Robert Robinson
114
Number of Isomers of C5-10 alkanes
Pentane - 3
Hexane - 5
Heptane - 9
Octane - 18
Nonane - 35
Decane - 75
115
Contributed to the discovery of the chair conformation of cyclohexane
Odd Hassel
116
Dihedral angles of different conformations of alkanes of cycloalkanes
Eclipse - 0°
Gauche Staggered - 60°
Anti Staggered - 180°
117
Which is healthier? saturated or unsaturated fats?
Unsaturated fats, also referred to as omega-3 fatty acids (COOH- in one terminal C, and double bond three C atoms from the other terminal)
118
C atoms of the wax present in the apple's skin
C27H56, alkane
119
Discovered hybridization?
Linus Pauling
120
3,3-sigmatropic arrangement
Cope rearrangement by Arthur Cope and Elizabeth Hardy
121
Mean radoiu
122
Who discovered phenolphthalein
Adolf von Baeyer
123
Difference of Cofactor and coenzyme
Cofactor is more generic, nonprotein part
Coenzyme is an organic factor
124
How many high energy phosphate bonds are in the ATP molecule?
2
125
Which has higher entropy? cyclopropane or propylene?
propylene due to free rotation
126
Chylomicrons
Instestines
127
Vitamin K1
4 isoprene units
128
Ozonolysis of styrene
benzaldehyde and formaldehyde
129
In which reaction can keto-enol tautomerism exist
Ozonolysis
130
ethyl cinnamate using LiAlH4
2-cyclohexyl prop-2-en-2-ol
131
Trimethyl propylammonium is heated with KOH to yield NNN trimethylamine and
Propene
132
SN1
two step mechanism
133
Waxes
Fatty acids alcohol esters
134
Positioning controllers are used for
high loads
135
The amplitude ratio for the sinusoidal response of a __________ is 1.
transportation lag
136
The response of two tanks of same size and resistance in series is
critically damped
137
The amplitude ratio for the sinusoidal response of __________ is < 1.
first order
