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Q11: _are proteins that facilitate chemical reactions such
Q12: Whether a chemical reaction is endothermic or
Q13: An anode and a cathode are found
Q17: Light of which of the following colors
Q19: One mole of which of the following
Q22: Fuel cells<br>A) store energy.<br>B) need regular recharging
Q28: The proportion of oxygen in dry air
Q36: Which one of the following is not
Q44: Mercury absorbed in the body damages the
Q62: Heat transfer by conduction occurs<br>A) only in