A heating coil has 5.25 Btu per pound of dry air of sensible heating to air in, and the entering conditions are 70 degrees dry bulb and 61 degrees wet bulb. What is the leaving wet bulb temperature.

A heating coil has 5.25 Btu per pound of dry air of sensible heating to air in, and the entering conditions are 70 degrees dry bulb and 61 degrees wet bulb. What is the leaving wet bulb temperature.