January 2017 Chemistry Regents #26-30
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Questions | Answer | Links | Explanations |
| 26 Which type of equation can represent the oxidation occurring in a reaction? (1) a double-replacement reaction equation (2) a half-reaction equation (3) a neutralization reaction equation (4) a transmutation reaction equation | 2 | redox...half reactions | |
| 27 The electrical conductivity of an aqueous solution depends on the concentration of which particles in the solution? (1) molecules (3) atoms (2) electrons (4) ions | 4 | moving charge...ions move | |
| 28 An electrolytic cell differs from a voltaic cell because an electrolytic cell (1) generates its own energy from a spontaneous physical reaction (2) generates its own energy from a nonspontaneous physical reaction (3) requires an outside energy source for a spontaneous chemical reaction to occur (4) requires an outside energy source for a nonspontaneous chemical reaction to occur | 4 | electrolytic requires a power source | |
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| 29 A sample of which radioisotope emits particles having the greatest mass? (1) 137Cs (3) 220Fr (2) 53Fe (4) 3H | 3 | Table N...alpha particles are the most massive (Table O) | |
| 30 Which term represents a nuclear reaction? (1) combustion (3) transmutation (2) fermentation (4) saponification | 3 | nuclear transmutation | |
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