Question

A Carnot engine takes an amount of heat QH = 119 J from a high-temperature reservoir at temperature TH = 1050°C, and exhausts the remaining heat into a low-temperature reservoir at TL = 11.5°C. Find the amount of work that is obtained from this process.

Answer 1

Only a fraction [the efficiency] of the heat energy will be used to do work.

The upper limit on that fraction is determined by

e = (TH-TL)/TH

where all of these are absolute temperatures (o K) rather than Celcius.

You can do the rest.