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PROB SOLVING PBE > 1. 2019 > Flashcards

1. 2019 Flashcards

1
Q

In the metal planting plants in Cagayan De Oro and Iligan

A

1.6x10^-7 mol/L

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2
Q

One mol of A … heart reservoir

A

12.5 j/k/mol

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3
Q

Determine the volume of carbon dioxide
(No temperature given)

A

750

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4
Q

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

A

2.44 moles of hydrogen

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5
Q

One mole of pure ethyl alcohol

A

58 mL

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6
Q

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

A

2, 1, 0

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7
Q

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

A

1, 2, 2

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8
Q

What is the average temperature of the moon

A

-4C

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9
Q

Precipitate all the silver ions

A

0.177 grams

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10
Q

Glucose, Stearic acid, soaps, fatty acids

A

Hydrophilic, amphi, amphi, hydrophobic

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11
Q

… Landfill should not exceed 16 meters

A

78 ha/ hectares

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12
Q

The Tanay Rizal Stone Works employs six worker

A

4.56 cubic meters per day

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13
Q

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

A

2.78 years

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14
Q

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

A

44 grams CO2

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15
Q

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

A

2 rxn one is water

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16
Q

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

A

52 kg CO2

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17
Q

Cobalt
Thallium
Tritium
Mercury

A

Cancer
Heart
Water content
Kidney

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18
Q

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

A

Salicin
Beta-endomorphin

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19
Q

Taurine, a Beta amino acid belongs to the acidic group

A

-SO2OH

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20
Q

The distance of earth to the most remote normal galaxy

A

9x10^25 meters

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21
Q

Aspirin

A

25
^23 molecules

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22
Q

A metal planting firm is installing a precipitation system

A

pH = 8.38

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23
Q

A magician rotates

A

3.13

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24
Q

Biphenyl

A

C12

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25
Q

T1/2 of Rubidium

A

86

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26
Q

A MRT line run across the Pasig River
*Herbicide

A

58.4

27
Q

11-tetradecenyl acetate

A

MW: 254

28
Q

When travelliny at NLEX at 80 mph

A

All of it transferred to the road and surrounding

29
Q

Theory of billiard

A

Where two equal mass undergo a glancing elastic collision

30
Q

Using the Van der Waals gas equation, derive the equation

A

B - 2a/RT ; -25

31
Q

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

A

0.333 bar; yO2 = 0.177

32
Q

A chemical engineering professor recorded her houshelo waste generation

*Can number

A

58.5 kgs/cu. m

33
Q

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

A

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

34
Q

Analyze and calculate the percentage of nickel in a 1.201 grams

A

12.5%

35
Q

Chicken wires

A

1st order

36
Q

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

A

Less than 1

37
Q

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

A

354.2 J

38
Q

Discover Helium

A

Ramsay and Travers

39
Q

Who theorized stars collapsing into blackhole as it increases entropy

A

Hawking

40
Q

Titanium Crystal

A

4.51

41
Q

Chemical formula of Caffeine

A

C8H10N4O2

42
Q

A certain toaster has a heating element made of Nichrome wire

A

183.6 W

43
Q

Entropy

A

Gibbs and Boltzman

44
Q

How many different tetrapeptide

A

256 and 160,000

45
Q

Most oxidized form of nitrogen

A

Nitrate (NO3-)

46
Q

A 1 kg copper bar

A

11.6 kJ - internal energy
-17.36 kJ - work

47
Q

Lipis contain a ceramide unit

A

Sphingomyelins

48
Q

Which of the following acidic grouo is present in taurine?

A

Sulfonic acid

49
Q

The diamond has a face-centered cubic crystal lattice

A

9, 11, 16, 19, 20, 23

50
Q

A railroad tank car is derailed and ruptured

Estimate the time it will take to flush 99% of the pesticide

A

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

51
Q

A manufacturing plant in Laguna that produces boron-based additives

*kernite and borax

A

2495 kg

52
Q

Determine the percent atom economy of Raschig Process

A

17.3%

53
Q

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

A

134th Row

54
Q

Glutamic acid

A

212
21

55
Q

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

A

B. Both are higher for alkyl halide

56
Q

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

A

B. Alkene

57
Q

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)

A

64.5x10^5

58
Q

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

A

77.3 kg/hectare

59
Q

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

A

58

60
Q

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

A

2.4, 5, 3.5

61
Q

A sample of chromite is analyzed to contain 30% CrO3

A

2.37

62
Q

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

A

2.010 g

63
Q

Mercury poisoning is a debilitating disease that is often fatal.

A

64.5x10^5

PROB SOLVING PBE (11 decks)

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