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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. The heat released when water condenses to liquid form - also known as the gross heat of combustion
equation for the maximum wavelength for a photon that has enough energy for photolysis
alkanes consist of...
what the higher heating value includes
molarity
2. First balance the chemical reaction - then for each species multiply the number of moles by the standard enthalpy to find total enthalpy
finding the heat of reaction: the process
four components of sand
the presence of carbon in a substance indicates that is it _____________ - except for _____________.
alkanes consist of...
3. Energy/mole
bulk pollutants are primarily ______________
standard enthalpy
Hydrophobic
The change in enthalpy in the reaction
4. 1 atm and 298 K (kj/mol)
equation for the maximum wavelength for a photon that has enough energy for photolysis
what the lower heating value is based on
bulk pollutants are primarily ______________
standard enthalpy(pressure and temp)
5. Change in enthalpy (H2-H1); the sum of the enthalpies of the reaction products minus the sum of the enthalpies of the reactants
1 mole
the equation depicting the relationship between the energy contained in 1 photon and the wavelength and frequency associated with the photon produced is...
the heat of reaction
atomic number
6. 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
aromatics
standard enthalpy
7. Benzene; graphite
0 - 1 - 22.4 L - 6.02x10^23 molecules
organic molecule partitioning
bulk pollutants are primarily ______________
graphine is a 1 dimensional sheet of _________; whereas ___________ is layers of graphine.
8. 1 mole of a substance dissolved into enough water to make the mixture have a volume of 1 L.
The molecules that really want them (most electronegative)
0 - 1 - 22.4 L - 6.02x10^23 molecules
Moles
A 1 molar solution
9. Natural waste
Aromaticity
the heat of reaction
aliphatics
the goal of water treatment is to remove _________________
10. 6.02x10^23 molecules
when a molecule is dissociated by absorbing a photon of energy
molarity
the equation depicting the relationship between the energy contained in 1 photon and the wavelength and frequency associated with the photon produced is...
1 mole
11. Number of protons in the nucleus
0 - 1 - 22.4 L - 6.02x10^23 molecules
the presence of carbon in a substance indicates that is it _____________ - except for _____________.
aromatic isomers (ortho vs. meta vs. para)
atomic number
12. The sum of the atomic weight of all the constituent atoms
the atomic weight of an atom
when a molecule is dissociated by absorbing a photon of energy
alkenes are saturated/unsaturated aliphatics
molecular weight of a molecule
13. H=U+PV; H2-H1=change in H=Q
Aromaticity
enthalpy of a system
what the lower heating value is based on
bulk pollutants are primarily ______________
14. Organic - carbonates (they're inorganic)
the dipole moment
0 - 1 - 22.4 L - 6.02x10^23 molecules
alkanes consist of...
the presence of carbon in a substance indicates that is it _____________ - except for _____________.
15. The more molecules of benzene - the more hydrophilic/hydrophobic the compound
aromatic isomers (ortho vs. meta vs. para)
enthalpy of a system
Hydrophobic
# of specific synthetic chemicals used daily and why it's potentially an issue
16. 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)
four components of sand
The molecules that really want them (most electronegative)
the equation depicting the relationship between the energy contained in 1 photon and the wavelength and frequency associated with the photon produced is...
aliphatics
17. Organic matter - silt - clay - sand
A 1 molar solution
four components of sand
standard enthalpy(pressure and temp)
aromatic isomers (ortho vs. meta vs. para)
18. When change in H (enthalpy) is positive - heat is _____________ and the reaction is said to be _____________
Absorbed; endothermic
finding the heat of reaction: the process
atomic number
Aromaticity
19. The mass of the atom measured in atomic mass units (1 proton=1 amu)
the atomic weight of an atom
organic molecule partitioning
what the higher heating value includes
A 1 molar solution
20. Groups linked by straight or branched carbon chains
enthalpy of a system
The molecules that really want them (most electronegative)
aliphatics
Absorbed; endothermic
21. Unsaturated - has double bonds!
alkenes are saturated/unsaturated aliphatics
1 mole
alkanes consist of...
the presence of carbon in a substance indicates that is it _____________ - except for _____________.
22. Atoms containing the same number of protons but differing amounts of neutrons are __________ of each other
the presence of carbon in a substance indicates that is it _____________ - except for _____________.
the goal of water treatment is to remove _________________
four components of sand
Isotopes
23. >100 -000; there is no natural decay cycle for them
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24. The process of going from one phase to another
The change in enthalpy in the reaction
organic molecule partitioning
molecular weight of a molecule
bulk pollutants are primarily ______________
25. Inorganic
bulk pollutants are primarily ______________
what the higher heating value includes
aromatics
alkanes consist of...
26. All single bonds
The molecules that really want them (most electronegative)
aliphatics
alkanes consist of...
a single photon must have sufficient energy to cause photolysis all by itself
27. Ring structures: - enes (double bonds); - anes (single bonds)
The change in enthalpy in the reaction
standard enthalpy
cycloalkenes
the atomic weight of an atom
28. The number of moles of substance per liter of solution
the presence of carbon in a substance indicates that is it _____________ - except for _____________.
molarity
bulk pollutants are primarily ______________
standard enthalpy(pressure and temp)
29. Mass (g)/molecular weight
moles
enthalpy of a system
equation for the maximum wavelength for a photon that has enough energy for photolysis
when a molecule is dissociated by absorbing a photon of energy
30. Circle (hexagonal if we'z gon get technical hurr) alkenes with double bonds at every other joint.
Aromaticity
four components of sand
the goal of water treatment is to remove _________________
aromatics
31. Ortho: side by side - meta: one point away - forms an M - para: opposite each other
molecular weight of a molecule
aromatic isomers (ortho vs. meta vs. para)
the atomic weight of an atom
alkenes are saturated/unsaturated aliphatics
32. Vector sum of all bond dipoles in a structure
Aromaticity
the dipole moment
alkanes consist of...
aromatic isomers (ortho vs. meta vs. para)
33. The flow of electrons goes to...
The molecules that really want them (most electronegative)
standard enthalpy
0 - 1 - 22.4 L - 6.02x10^23 molecules
organic molecule partitioning
34. 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
bulk pollutants are primarily ______________
graphine is a 1 dimensional sheet of _________; whereas ___________ is layers of graphine.
standard enthalpy
35. For a photon to be able to cause photolysis - it must have at least as much energy as...
standard enthalpy(pressure and temp)
graphine is a 1 dimensional sheet of _________; whereas ___________ is layers of graphine.
the heat of reaction
The change in enthalpy in the reaction
36. At standard STP (corresponding to __ degrees celsius and __ atm) - 1 mole of an ideal gas occupies ___ L and contains ___ molecules.
the dipole moment
alkanes consist of...
The change in enthalpy in the reaction
0 - 1 - 22.4 L - 6.02x10^23 molecules
37. Wavelength </= hc/E
1 mole
when a molecule is dissociated by absorbing a photon of energy
alkenes are saturated/unsaturated aliphatics
equation for the maximum wavelength for a photon that has enough energy for photolysis
38. Photochemical reaction; photochemical dissociation; or simply photolysis
when a molecule is dissociated by absorbing a photon of energy
The change in enthalpy in the reaction
molecular weight of a molecule
organic molecule partitioning
39. The heat of reaction when water is assumed to remain in a vapor state; also called the net heat of combustion
The change in enthalpy in the reaction
organic molecule partitioning
Absorbed; endothermic
what the lower heating value is based on
40. If we divide the mass of a substance by its molecular weight - the result is the mass expressed in ________.
the atomic weight of an atom
aromatic isomers (ortho vs. meta vs. para)
Moles
equation for the maximum wavelength for a photon that has enough energy for photolysis