Which of the following occurs when hydrogen chloride gas is dissolved in water to form hydrochloric acid?
A) A complex between HCl and water is formed.
B) H+ is transferred from HCl to water.
C) H+ is transferred from water to HCl.
D) There is no reaction, HCl molecules remain present.
B
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Glider A of mass of 1 kg and speed 1 m/s on a friction-free air track collides with a 5-kg glider B at rest. For an inelastic collision the combined-glider speed will be
A. 1/5 m/s. B. 1/4 m/s. C. 1/6 m/s. D. 1 m/s.
According to the following reaction, which molecule is acting as a base?H2O + NH3 ? OH- + NH4+
A.
| H2O |
B. NH3
C. OH-
D.
| NH4+ |
E. none of the above
Which of the following deep-water fish was original called the slimehead and is now on the Seafood Watch List of fish to avoid purchasing?
A) Alaskan Salmon B) Chilean Seabass C) Greenland Halibut D) Orange Roughy E) Patagonian Toothfish
Which stage of Davis’s Geomorphic Cycle occurs when the stream reaches an equilibrium condition?
A. youth B. maturity C. equilibrium D. old age E. rejuvenation