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Q28: In pure water at 25°C, the concentration
Q29: Given an OH<sup>−</sup> concentration of 1.0 ×
Q43: Bombardment of cobalt-59 with a neutron produces
Q45: Carbon-14 has a half-life of 5730 yr.
Q47: What volume of 6.00 M NaOH contains
Q63: Given a fixed amount of gas in
Q65: Three phases of water are shown in
Q79: A solid substance has a very high
Q94: If the initial pressure of a 2.00
Q116: In January a balloon is taken inside