Help with this thermochemistry problem below?

Question

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 1atm. The cylinder is also submerged in a large insulated water bath.

From previous experiments, this chemical reaction is known to absorb 172.kJ

 of energy.The position of the piston is monitored, and it is determined from this data that the system does 

341.kJ of work on the piston during the reaction. 

1. Is the reaction exothermic or endothermic?
2. Does the temperature of the water bath go up, down, or neither?
3. Does the piston move in, out, or neither?
4. Does heat flow into, out, neither of the gas mixture?
5. How much heat flows? Round your answer to 3 significant digits?

Answer 1

∆H = +172 kJ

w = -341 kJ

The reaction is ENDOTHERMIC (∆H is positive)

The temperature of the water bath goes DOWN

The piston moves OUT (work is done ON the piston)

Heat flows INTO the system

172 kJ of heat flows into the system.