1. 2019

Question 1

In the metal planting plants in Cagayan De Oro and Iligan

Answer 1

1.6x10^-7 mol/L

Question 2

One mol of A … heart reservoir

Answer 2

12.5 j/k/mol

Question 3

Determine the volume of carbon dioxide
(No temperature given)

Answer 3

750

Question 4

Calculate the number of mole of hydrogen ion is required to form 1.24 mole of hydrogen

Answer 4

2.44 moles of hydrogen

Question 5

One mole of pure ethyl alcohol

Answer 5

58 mL

Question 6

DF of 1 phase
DF of 2 phase
DF of 3 phase

Answer 6

2, 1, 0

Question 7

DF of Liquid water in equilibrium with its vapor
Liquid water in equilibrium with a mixture of water vapor and nitrogen

Answer 7

1, 2, 2

Question 8

What is the average temperature of the moon

Answer 8

-4C

Question 9

Precipitate all the silver ions

Answer 9

0.177 grams

Question 10

Glucose, Stearic acid, soaps, fatty acids

Answer 10

Hydrophilic, amphi, amphi, hydrophobic

Question 11

… Landfill should not exceed 16 meters

Answer 11

78 ha/ hectares

Question 12

The Tanay Rizal Stone Works employs six worker

Answer 12

4.56 cubic meters per day

Question 13

The Malaysian landfill about 100 kilometers from Kuala Lumpur … assume density of 492 kilograms/cubic meter

Answer 13

2.78 years

Question 14

When 12 grams of carbon(s) are mixed with 64.2 grams of O2

Answer 14

44 grams CO2

Question 15

What organic product is formed when C6H5CH2COOH is treated with CH3OH + H2SO4 (catalyst)

Answer 15

2 rxn one is water

Question 16

If high octane gasoline with density 0.71 gm/m is used by a BMW on NLEX

Answer 16

52 kg CO2

Question 17

Cobalt
Thallium
Tritium
Mercury

Answer 17

Cancer
Heart
Water content
Kidney

Question 18

Name the major physiologically active substance
Bark the willow tree
Pituitary gland

Answer 18

Salicin
Beta-endomorphin

Question 19

Taurine, a Beta amino acid belongs to the acidic group

Answer 19

-SO2OH

Question 20

The distance of earth to the most remote normal galaxy

Answer 20

9x10^25 meters

Question 21

Aspirin

Answer 21

25
^23 molecules

Question 22

A metal planting firm is installing a precipitation system

Answer 22

pH = 8.38

Question 23

A magician rotates

Answer 23

3.13

Question 24

Biphenyl

Answer 24

C12

Question 25

T1/2 of Rubidium

Answer 25

86

Question 26

A MRT line run across the Pasig River *Herbicide

Answer 26

58.4

Question 27

11-tetradecenyl acetate

Answer 27

MW: 254

Question 28

When travelliny at NLEX at 80 mph

Answer 28

All of it transferred to the road and surrounding

Question 29

Theory of billiard

Answer 29

Where two equal mass undergo a glancing elastic collision

Question 30

Using the Van der Waals gas equation, derive the equation

Answer 30

B - 2a/RT ; -25

Question 31

Assuming that air at sea level is composed of 20% oxygen

Answer 31

0.333 bar; yO2 = 0.177

Question 32

A chemical engineering professor recorded her houshelo waste generation *Can number

Answer 32

58.5 kgs/cu. m

Question 33

Calculate the quantity of available nitrogen per kilogram of chicken/horse manure

Answer 33

5 grams N/kg manure and 20,000 kilograms manure/hectare

Question 34

Analyze and calculate the percentage of nickel in a 1.201 grams

Answer 34

12.5%

Question 35

Chicken wires

Answer 35

1st order

Question 36

Oxygen at pressures much greater than 1 atm is toxic to lung cells

Answer 36

Less than 1

Question 37

How much is the amouny of work done to move 6.51 kg chair

Answer 37

354.2 J

Question 38

Discover Helium

Answer 38

Ramsay and Travers

Question 39

Who theorized stars collapsing into blackhole as it increases entropy

Answer 39

Hawking

Question 40

Titanium Crystal

Answer 40

4.51

Question 41

Chemical formula of Caffeine

Answer 41

C8H10N4O2

Question 42

A certain toaster has a heating element made of Nichrome wire

Answer 42

183.6 W

Question 43

Entropy

Answer 43

Gibbs and Boltzman

Question 44

How many different tetrapeptide

Answer 44

256 and 160,000

Question 45

Most oxidized form of nitrogen

Answer 45

Nitrate (NO3-)

Question 46

A 1 kg copper bar

Answer 46

11.6 kJ - internal energy -17.36 kJ - work

Question 47

Lipis contain a ceramide unit

Answer 47

Sphingomyelins

Question 48

Which of the following acidic grouo is present in taurine?

Answer 48

Sulfonic acid

Question 49

The diamond has a face-centered cubic crystal lattice

Answer 49

9, 11, 16, 19, 20, 23

Question 50

A railroad tank car is derailed and ruptured Estimate the time it will take to flush 99% of the pesticide

Answer 50

Time to reach the pond - 2.3 days Time to flush - 21 days

Question 51

A manufacturing plant in Laguna that produces boron-based additives *kernite and borax

Answer 51

2495 kg

Question 52

Determine the percent atom economy of Raschig Process

Answer 52

17.3%

Question 53

A Chemical Engineer joined Philipinad Got Talent has a Magician that can perform marvelous feats. ... he realeases tear gas at the rear of a 201 row hall

Answer 53

134th Row

Question 54

Glutamic acid

Answer 54

212 21

Question 55

Compre the boiling points and densities of alkyl halide and alkane A. Both are lower for alkyl halide B. Both are higher for alkyl halide C. Higher denisoty and lower boiling point for alkyl halide D. Lower density and higher boiling point for alkyl halide

Answer 55

B. Both are higher for alkyl halide

Question 56

Alkyl halide reacts with a hydroxide to form what compound? A. Alcohol B. Alkene C. Alkyne D. Alkane

Answer 56

B. Alkene

Question 57

Mercury poisoning is a debilitating disease that is often fatal. In the human body, mercury reacts with essential enzymes leading to irreversible inactivity of these enzymes. If the amount of mercury in a polluted lake is 0.4 microgram Hg/mL, what is the toltal mass in kilograms of mercury in the lake? (The lake surface area of 100 mi^2 and an average depth of 20 ft)

Answer 57

64.5x10^5

Question 58

In year 2, the farmer plans to plant soybeans. No manure is to be applied during this crop year.

Answer 58

77.3 kg/hectare

Question 59

In electrochemistry, specific conductance is defined as (1000/N)xK

Answer 59

58

Question 60

A solution of HCl and a monobaric acid is titrated when NaOH

Answer 60

2.4, 5, 3.5

Question 61

A sample of chromite is analyzed to contain 30% CrO3

Answer 61

2.37

Question 62

A certain volume of a solution of KMnO4 will oxidize sufficient potassium tetraoxalate that requires half pf that voluve

Answer 62

2.010 g

Question 63

Mercury poisoning is a debilitating disease that is often fatal.

Answer 63

64.5x10^5