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