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Q6: Ca<sup>2+</sup>, K<sup>+</sup> and Cl<sup>-</sup> have the same
Q7: A gas occupies a volume of 0.500
Q11: The replacement of a single NH group
Q16: Which of the following chemical substances would
Q28: 25 mL 0.1 M NaCl contains _
Q43: Which of the following is not a
Q74: 21.2 g KBr is equal to 0.178
Q87: Which of the following statements is correct
Q105: Alkynes have the general molecular formula C<sub>n</sub>H<sub>2n-2</sub>.
Q229: The ferrous ion is also referred to