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For questions 18-21, use the information on Pages 590-592 and Page 567. In each space, classify the
reaction type.
18.
2LİBr + Pb(NO3) —
PbBr2 + 2LINO,
Fe + 2HC
FeCl2 + H2
Cap+H20 -
Ca(OH)2
NiCl ---
Ni+ Cla
SON
GH SCHOOL

Along wire of diameter 1 mm is submerged in an oil bath of temperature ∞ 31°c. the wire has an electrical resistance per unit length of 0.01 ω/m. if a current of 103 a flows through the wire and the convection coefficient is 500 w/m2·k, what is the steady-state temperature of the wire? from the time the current is applied, how long does it take for the wire to reach a temperature that is within 1°c of the steady-state value? the properties of the wire are 8000 kg/m3, 500 j/kg·k, and 20 w/m·k.

The amount of potential energy possessed by an elevated object is equal to

Asimple electrochemical cell contains two electrodes.