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