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