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Test your basic knowledge |
Environmental Engineering
Start Test
Study First
Subject
:
engineering
Instructions:
Answer 40 questions in 15 minutes.
If you are not ready to take this test, you can
study here
.
Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.
This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. If we divide the mass of a substance by its molecular weight - the result is the mass expressed in ________.
Moles
cycloalkenes
A 1 molar solution
organic molecule partitioning
2. The heat of reaction when water is assumed to remain in a vapor state; also called the net heat of combustion
what the lower heating value is based on
moles
1 mole
Hydrophobic
3. Change in enthalpy (H2-H1); the sum of the enthalpies of the reaction products minus the sum of the enthalpies of the reactants
aliphatics
cycloalkenes
what the higher heating value includes
the heat of reaction
4. Ring structures: - enes (double bonds); - anes (single bonds)
alkanes consist of...
molecular weight of a molecule
cycloalkenes
the atomic weight of an atom
5. >100 -000; there is no natural decay cycle for them
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6. Benzene; graphite
graphine is a 1 dimensional sheet of _________; whereas ___________ is layers of graphine.
Moles
a single photon must have sufficient energy to cause photolysis all by itself
organic molecule partitioning
7. Circle (hexagonal if we'z gon get technical hurr) alkenes with double bonds at every other joint.
organic molecule partitioning
enthalpy of a system
aromatics
Aromaticity
8. Unsaturated - has double bonds!
equation for the maximum wavelength for a photon that has enough energy for photolysis
finding the heat of reaction: the process
alkenes are saturated/unsaturated aliphatics
atomic number
9. The more molecules of benzene - the more hydrophilic/hydrophobic the compound
cycloalkenes
Hydrophobic
a single photon must have sufficient energy to cause photolysis all by itself
aromatic isomers (ortho vs. meta vs. para)
10. 6.02x10^23 molecules
the goal of water treatment is to remove _________________
1 mole
0 - 1 - 22.4 L - 6.02x10^23 molecules
organic molecule partitioning
11. The mass of the atom measured in atomic mass units (1 proton=1 amu)
the atomic weight of an atom
aromatic isomers (ortho vs. meta vs. para)
aromatics
molarity
12. Mass (g)/molecular weight
what the higher heating value includes
aromatics
moles
alkenes are saturated/unsaturated aliphatics
13. Ortho: side by side - meta: one point away - forms an M - para: opposite each other
the heat of reaction
the equation depicting the relationship between the energy contained in 1 photon and the wavelength and frequency associated with the photon produced is...
the presence of carbon in a substance indicates that is it _____________ - except for _____________.
aromatic isomers (ortho vs. meta vs. para)
14. H=U+PV; H2-H1=change in H=Q
enthalpy of a system
A 1 molar solution
Aromaticity
The change in enthalpy in the reaction
15. Natural waste
the goal of water treatment is to remove _________________
graphine is a 1 dimensional sheet of _________; whereas ___________ is layers of graphine.
alkanes consist of...
The molecules that really want them (most electronegative)
16. Electrons are free to cycle around arrangements of atoms which are alternatively single- and double- bonded to one another. These bonds may be seen as a hybrid of a single bond and a double bond - each bond in the ring identical to every other
the dipole moment
Aromaticity
the goal of water treatment is to remove _________________
equation for the maximum wavelength for a photon that has enough energy for photolysis
17. 1 mole of a substance dissolved into enough water to make the mixture have a volume of 1 L.
Hydrophobic
A 1 molar solution
Absorbed; endothermic
enthalpy of a system
18. The heat released when water condenses to liquid form - also known as the gross heat of combustion
organic molecule partitioning
The molecules that really want them (most electronegative)
what the higher heating value includes
finding the heat of reaction: the process
19. Groups linked by straight or branched carbon chains
alkanes consist of...
Absorbed; endothermic
aliphatics
the presence of carbon in a substance indicates that is it _____________ - except for _____________.
20. Photochemical reaction; photochemical dissociation; or simply photolysis
The molecules that really want them (most electronegative)
when a molecule is dissociated by absorbing a photon of energy
alkenes are saturated/unsaturated aliphatics
the presence of carbon in a substance indicates that is it _____________ - except for _____________.
21. The flow of electrons goes to...
The molecules that really want them (most electronegative)
the presence of carbon in a substance indicates that is it _____________ - except for _____________.
graphine is a 1 dimensional sheet of _________; whereas ___________ is layers of graphine.
A 1 molar solution
22. Organic - carbonates (they're inorganic)
the presence of carbon in a substance indicates that is it _____________ - except for _____________.
Aromaticity
the goal of water treatment is to remove _________________
alkanes consist of...
23. Inorganic
aromatic isomers (ortho vs. meta vs. para)
molarity
Aromaticity
bulk pollutants are primarily ______________
24. The sum of the atomic weight of all the constituent atoms
molecular weight of a molecule
Moles
aliphatics
molarity
25. 1 atm and 298 K (kj/mol)
standard enthalpy(pressure and temp)
Moles
what the lower heating value is based on
bulk pollutants are primarily ______________
26. Vector sum of all bond dipoles in a structure
the dipole moment
standard enthalpy(pressure and temp)
aromatic isomers (ortho vs. meta vs. para)
standard enthalpy
27. Number of protons in the nucleus
cycloalkenes
Aromaticity
molecular weight of a molecule
atomic number
28. For a photon to be able to cause photolysis - it must have at least as much energy as...
The change in enthalpy in the reaction
molarity
what the higher heating value includes
standard enthalpy
29. Wavelength </= hc/E
equation for the maximum wavelength for a photon that has enough energy for photolysis
alkanes consist of...
the goal of water treatment is to remove _________________
standard enthalpy
30. Molecules cannot store up energy from a series of photon encounters (waiting until enough energy is accumulated to cause photolysis...
A 1 molar solution
Absorbed; endothermic
the heat of reaction
a single photon must have sufficient energy to cause photolysis all by itself
31. At standard STP (corresponding to __ degrees celsius and __ atm) - 1 mole of an ideal gas occupies ___ L and contains ___ molecules.
the equation depicting the relationship between the energy contained in 1 photon and the wavelength and frequency associated with the photon produced is...
The change in enthalpy in the reaction
what the lower heating value is based on
0 - 1 - 22.4 L - 6.02x10^23 molecules
32. E=hv=(hc)/wavelength where: E=energy of a photon (J) h=planck's constant (6.6x10^-34 Js) v=frequency (hertz - ie. cycles per second) c=speed of light (3.0x10^8 m/s) gamma=wavelength (m)
the equation depicting the relationship between the energy contained in 1 photon and the wavelength and frequency associated with the photon produced is...
aromatics
atomic number
The change in enthalpy in the reaction
33. First balance the chemical reaction - then for each species multiply the number of moles by the standard enthalpy to find total enthalpy
The change in enthalpy in the reaction
four components of sand
finding the heat of reaction: the process
the atomic weight of an atom
34. When change in H (enthalpy) is positive - heat is _____________ and the reaction is said to be _____________
Moles
Absorbed; endothermic
The change in enthalpy in the reaction
the atomic weight of an atom
35. The process of going from one phase to another
organic molecule partitioning
0 - 1 - 22.4 L - 6.02x10^23 molecules
The change in enthalpy in the reaction
the presence of carbon in a substance indicates that is it _____________ - except for _____________.
36. Organic matter - silt - clay - sand
alkanes consist of...
The molecules that really want them (most electronegative)
the presence of carbon in a substance indicates that is it _____________ - except for _____________.
four components of sand
37. The number of moles of substance per liter of solution
aromatics
molarity
finding the heat of reaction: the process
Moles
38. Atoms containing the same number of protons but differing amounts of neutrons are __________ of each other
Hydrophobic
Isotopes
what the lower heating value is based on
aliphatics
39. Energy/mole
four components of sand
The change in enthalpy in the reaction
standard enthalpy
a single photon must have sufficient energy to cause photolysis all by itself
40. All single bonds
Aromaticity
1 mole
alkanes consist of...
cycloalkenes