A mixture of gaseous reactants is put into a cylinder, where a chemical reaction turns them into gaseous products. The cylinder has a piston that moves in or out, as necessary, to keep a constant pressure on the mixture of 1 atm. The cylinder is also submerged in a large insulated water bath. (See sketch at right.) 1 atm pressure piston From previous experiments, this chemical reaction is known to absorb 210. kJ of energy. gases do The position of the piston is monitored, and it is determined from this data that the system does 160. kJ of work on the piston during the reaction. Ar O exothermic Is the reaction exothermic or endothermic? endothermic up Does the temperature of the water bath go up or down? down neither in Does the piston move in or out? out neither in Does heat flow into or out of the gas mixture? out neither How much heat flows? Be sure your answer has the correct number of significant digits. kJ

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A mixture of gaseous reactants is put into a cylinder, where a chemical reaction
turns them into gaseous products. The cylinder has a piston that moves in or out,
as necessary, to keep a constant pressure on the mixture of 1 atm. The cylinder is
also submerged in a large insulated water bath. (See sketch at right.)
1 atm pressure
piston
From previous experiments, this chemical reaction is known to absorb 210. kJ of
energy.
gases
do
The position of the piston is monitored, and it is determined from this data that
the system does 160. kJ of work on the piston during the reaction.
Ar
O exothermic
Is the reaction exothermic or endothermic?
endothermic
up
Does the temperature of the water bath go up or
down?
down
neither
in
Does the piston move in or out?
out
neither
in
Does heat flow into or out of the gas mixture?
out
neither
How much heat flows? Be sure your answer has
the correct number of significant digits.
kJ
Transcribed Image Text:A mixture of gaseous reactants is put into a cylinder, where a chemical reaction turns them into gaseous products. The cylinder has a piston that moves in or out, as necessary, to keep a constant pressure on the mixture of 1 atm. The cylinder is also submerged in a large insulated water bath. (See sketch at right.) 1 atm pressure piston From previous experiments, this chemical reaction is known to absorb 210. kJ of energy. gases do The position of the piston is monitored, and it is determined from this data that the system does 160. kJ of work on the piston during the reaction. Ar O exothermic Is the reaction exothermic or endothermic? endothermic up Does the temperature of the water bath go up or down? down neither in Does the piston move in or out? out neither in Does heat flow into or out of the gas mixture? out neither How much heat flows? Be sure your answer has the correct number of significant digits. kJ
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