Which statement best describes metallic bonding?
A. Electrostatic attractions between oppositely
charged ions.
B. Electrostatic attractions between a lattice of
positive ions and delocalized electrons.
C. Electrostatic attractions between a lattice of
negative ions and delocalized protons.
D. Electrostatic attractions between protons
and electrons.

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Enzymes affect the reactions in living cells by changing the

Acalorimeter is to be calibrated: 51.203 g of water at 55.2 degree c is added to a calorimeter containing 49.783 g of water at 23.5c. after stirring and waiting for the system to equilibrate, the final temperature reached is 37.6 degree c. specific heat capacity of water (s = 4.18 j/g∙degree c). calculate the calorimeter constant. (smδt)warm water = -[(smδt)cold water + (calorimeterδtcold water)]