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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. Vector sum of all bond dipoles in a structure
a single photon must have sufficient energy to cause photolysis all by itself
Isotopes
equation for the maximum wavelength for a photon that has enough energy for photolysis
the dipole moment
2. Number of protons in the nucleus
cycloalkenes
moles
atomic number
the equation depicting the relationship between the energy contained in 1 photon and the wavelength and frequency associated with the photon produced is...
3. Circle (hexagonal if we'z gon get technical hurr) alkenes with double bonds at every other joint.
cycloalkenes
aromatics
The molecules that really want them (most electronegative)
alkanes consist of...
4. H=U+PV; H2-H1=change in H=Q
Aromaticity
bulk pollutants are primarily ______________
what the higher heating value includes
enthalpy of a system
5. Wavelength </= hc/E
four components of sand
alkanes consist of...
equation for the maximum wavelength for a photon that has enough energy for photolysis
Aromaticity
6. The number of moles of substance per liter of solution
moles
Isotopes
enthalpy of a system
molarity
7. Groups linked by straight or branched carbon chains
alkenes are saturated/unsaturated aliphatics
equation for the maximum wavelength for a photon that has enough energy for photolysis
aliphatics
the atomic weight of an atom
8. 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 change in enthalpy in the reaction
alkanes consist of...
when a molecule is dissociated by absorbing a photon of energy
the equation depicting the relationship between the energy contained in 1 photon and the wavelength and frequency associated with the photon produced is...
9. The sum of the atomic weight of all the constituent atoms
aromatic isomers (ortho vs. meta vs. para)
Moles
equation for the maximum wavelength for a photon that has enough energy for photolysis
molecular weight of a molecule
10. The heat of reaction when water is assumed to remain in a vapor state; also called the net heat of combustion
the presence of carbon in a substance indicates that is it _____________ - except for _____________.
what the lower heating value is based on
alkanes consist of...
organic molecule partitioning
11. Energy/mole
Absorbed; endothermic
standard enthalpy
the goal of water treatment is to remove _________________
1 mole
12. 1 atm and 298 K (kj/mol)
organic molecule partitioning
graphine is a 1 dimensional sheet of _________; whereas ___________ is layers of graphine.
standard enthalpy(pressure and temp)
the goal of water treatment is to remove _________________
13. All single bonds
the dipole moment
molecular weight of a molecule
four components of sand
alkanes consist of...
14. Unsaturated - has double bonds!
equation for the maximum wavelength for a photon that has enough energy for photolysis
bulk pollutants are primarily ______________
Aromaticity
alkenes are saturated/unsaturated aliphatics
15. The flow of electrons goes to...
alkenes are saturated/unsaturated aliphatics
The molecules that really want them (most electronegative)
bulk pollutants are primarily ______________
Absorbed; endothermic
16. Organic matter - silt - clay - sand
four components of sand
0 - 1 - 22.4 L - 6.02x10^23 molecules
moles
aromatic isomers (ortho vs. meta vs. para)
17. 1 mole of a substance dissolved into enough water to make the mixture have a volume of 1 L.
A 1 molar solution
Absorbed; endothermic
atomic number
The molecules that really want them (most electronegative)
18. The process of going from one phase to another
Aromaticity
organic molecule partitioning
moles
Absorbed; endothermic
19. Molecules cannot store up energy from a series of photon encounters (waiting until enough energy is accumulated to cause photolysis...
a single photon must have sufficient energy to cause photolysis all by itself
aliphatics
organic molecule partitioning
0 - 1 - 22.4 L - 6.02x10^23 molecules
20. 6.02x10^23 molecules
1 mole
atomic number
molecular weight of a molecule
a single photon must have sufficient energy to cause photolysis all by itself
21. When change in H (enthalpy) is positive - heat is _____________ and the reaction is said to be _____________
four components of sand
Absorbed; endothermic
Aromaticity
the goal of water treatment is to remove _________________
22. Mass (g)/molecular weight
cycloalkenes
moles
Absorbed; endothermic
the atomic weight of an atom
23. >100 -000; there is no natural decay cycle for them
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24. Change in enthalpy (H2-H1); the sum of the enthalpies of the reaction products minus the sum of the enthalpies of the reactants
the heat of reaction
bulk pollutants are primarily ______________
what the higher heating value includes
0 - 1 - 22.4 L - 6.02x10^23 molecules
25. Ortho: side by side - meta: one point away - forms an M - para: opposite each other
Hydrophobic
what the lower heating value is based on
aromatic isomers (ortho vs. meta vs. para)
the atomic weight of an atom
26. Organic - carbonates (they're inorganic)
finding the heat of reaction: the process
the presence of carbon in a substance indicates that is it _____________ - except for _____________.
atomic number
Moles
27. Inorganic
bulk pollutants are primarily ______________
aromatics
atomic number
the heat of reaction
28. If we divide the mass of a substance by its molecular weight - the result is the mass expressed in ________.
Moles
the heat of reaction
four components of sand
A 1 molar solution
29. The heat released when water condenses to liquid form - also known as the gross heat of combustion
what the higher heating value includes
when a molecule is dissociated by absorbing a photon of energy
Moles
finding the heat of reaction: the process
30. Natural waste
the goal of water treatment is to remove _________________
standard enthalpy(pressure and temp)
equation for the maximum wavelength for a photon that has enough energy for photolysis
atomic number
31. For a photon to be able to cause photolysis - it must have at least as much energy as...
Absorbed; endothermic
The change in enthalpy in the reaction
Aromaticity
# of specific synthetic chemicals used daily and why it's potentially an issue
32. Ring structures: - enes (double bonds); - anes (single bonds)
the atomic weight of an atom
cycloalkenes
the dipole moment
organic molecule partitioning
33. Photochemical reaction; photochemical dissociation; or simply photolysis
when a molecule is dissociated by absorbing a photon of energy
# of specific synthetic chemicals used daily and why it's potentially an issue
finding the heat of reaction: the process
the goal of water treatment is to remove _________________
34. Benzene; graphite
graphine is a 1 dimensional sheet of _________; whereas ___________ is layers of graphine.
The change in enthalpy in the reaction
Absorbed; endothermic
standard enthalpy(pressure and temp)
35. First balance the chemical reaction - then for each species multiply the number of moles by the standard enthalpy to find total enthalpy
# of specific synthetic chemicals used daily and why it's potentially an issue
Moles
finding the heat of reaction: the process
moles
36. The more molecules of benzene - the more hydrophilic/hydrophobic the compound
molarity
Aromaticity
Hydrophobic
The molecules that really want them (most electronegative)
37. At standard STP (corresponding to __ degrees celsius and __ atm) - 1 mole of an ideal gas occupies ___ L and contains ___ molecules.
what the higher heating value includes
enthalpy of a system
The molecules that really want them (most electronegative)
0 - 1 - 22.4 L - 6.02x10^23 molecules
38. The mass of the atom measured in atomic mass units (1 proton=1 amu)
the goal of water treatment is to remove _________________
the heat of reaction
Absorbed; endothermic
the atomic weight of an atom
39. Atoms containing the same number of protons but differing amounts of neutrons are __________ of each other
enthalpy of a system
aromatic isomers (ortho vs. meta vs. para)
Hydrophobic
Isotopes
40. 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
what the higher heating value includes
Aromaticity
A 1 molar solution
the presence of carbon in a substance indicates that is it _____________ - except for _____________.