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