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Acamcorder has a power rating of 17 watts. if the output voltage from its battery is 7 volts, what current does it use?units:
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Which statement is usually true about the relationship between activation energy and reaction rates? low activation energy barriers result in low rates. high activation energy barriers result in low rates. low activation energy barriers result in no reaction. high activation energy barriers result in no reaction.
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Which of the following is most likely true about water in chemical systems? a) water dissolves nonpolar ionic compounds. b) water dissociates ionic compounds. c) water dissociates covalent molecules. d) water dissolves nonpolar covalent substances.
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Which statement names the physical property of wood a. wood is softer than coal b. wood does not rust c. wood can rot d. wood can burn
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Balance each of the following: a. H + Ch -› HCI b. Al + Fe, O3 › Al, O3 + Fe C. Pb(CH:COO)2 + HyS ›...
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