2. The pressure in the steam boiler is p_(abs)=1.6 bara at barometric pressure B_(1)=720 mm Hg What will be the gauge pressure in the boiler if the barometer reading rises to B_(2)=785 mm Hg and the state of steam in the boiler remains the same?

To find the gauge pressure in the boiler when the barometer reading rises to mm Hg, we can use the formula:Gauge Pressure = Absolute Pressure - Atmospheric PressureGiven:- Absolute Pressure, bara- Barometric Pressure, mm Hg- Barometric Pressure, mm HgFirst, we need to convert the absolute pressure from bara to mm Hg: bara = mm Hg mm HgNext, we can calculate the gauge pressure using the formula:Gauge Pressure = Gauge Pressure = mm HgTherefore, the gauge pressure in the boiler when the barometer reading rises to mm Hg and the state of steam in the boiler remains the same is approximately mm Hg.