Humidification / dehumidification : gr/lb and temp change

[rk27]

Could someone tell me if the following assumption can be made ? If the building takes in outside air at 55 degF / 60% RH which has 38.52 gr/lb moisture, I can then assume if this air is heated to 70 degF, it will have 35.35% RH, because the moisture content remains the same.

 

[quark]

Obviously you can do that.