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3. Why was it necessary to heat the test tube in order for a chemical reaction to occur?
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Determine the percent sulfuric acid by mass of a 1.61 m aqueous solution of h2so4. %
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Compared with the freezing-point depression of a 0.01 m c6h12o6 solution, the freezing-point depression of a 0.01 m nacl solution is
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Two people each hold the end of a rope and create waves by moving their arms up and down. this wave is best classified as a transverse wave because a) both the rope particles and the wave are moving in the same direction. b) the wave is moving up and down as the particles of the rope move horizontally. c) the wave is moving horizontally as the particles of the rope move up and down. eliminate d) the wave is moving in a parallel direction with the motion of the person's arms.
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3. Why was it necessary to heat the test tube in order for a chemical reaction to occur?...
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