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Environmental Engineering

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. Groups linked by straight or branched carbon chains






2. Number of protons in the nucleus






3. The mass of the atom measured in atomic mass units (1 proton=1 amu)






4. Inorganic






5. 6.02x10^23 molecules






6. Natural waste






7. When change in H (enthalpy) is positive - heat is _____________ and the reaction is said to be _____________






8. Ortho: side by side - meta: one point away - forms an M - para: opposite each other






9. If we divide the mass of a substance by its molecular weight - the result is the mass expressed in ________.






10. First balance the chemical reaction - then for each species multiply the number of moles by the standard enthalpy to find total enthalpy






11. H=U+PV; H2-H1=change in H=Q






12. Circle (hexagonal if we'z gon get technical hurr) alkenes with double bonds at every other joint.






13. 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)






14. 1 atm and 298 K (kj/mol)






15. The flow of electrons goes to...






16. The number of moles of substance per liter of solution






17. The more molecules of benzene - the more hydrophilic/hydrophobic the compound






18. Vector sum of all bond dipoles in a structure






19. The heat of reaction when water is assumed to remain in a vapor state; also called the net heat of combustion






20. Organic matter - silt - clay - sand






21. Organic - carbonates (they're inorganic)






22. Atoms containing the same number of protons but differing amounts of neutrons are __________ of each other






23. For a photon to be able to cause photolysis - it must have at least as much energy as...






24. The process of going from one phase to another






25. Ring structures: - enes (double bonds); - anes (single bonds)






26. Molecules cannot store up energy from a series of photon encounters (waiting until enough energy is accumulated to cause photolysis...






27. Wavelength </= hc/E






28. At standard STP (corresponding to __ degrees celsius and __ atm) - 1 mole of an ideal gas occupies ___ L and contains ___ molecules.






29. Energy/mole






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






31. Unsaturated - has double bonds!






32. The sum of the atomic weight of all the constituent atoms






33. Mass (g)/molecular weight






34. Change in enthalpy (H2-H1); the sum of the enthalpies of the reaction products minus the sum of the enthalpies of the reactants






35. Photochemical reaction; photochemical dissociation; or simply photolysis






36. 1 mole of a substance dissolved into enough water to make the mixture have a volume of 1 L.






37. Benzene; graphite






38. The heat released when water condenses to liquid form - also known as the gross heat of combustion






39. All single bonds






40. >100 -000; there is no natural decay cycle for them

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Can you answer 50 questions in 15 minutes?



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