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