4. (10 pts) Using the figure below, how much moisture, in g of water of total weight of tissue (dry tissue + water), would your skin surface lose as relative humidity changes from 20 to 90 %? The figure below shows moisture content on a dry basis (Md). To find moisture content on a wet basis (Mw), use the formula Ma = Mw/(1 Mw). 1.6 1.4 1.2 Water content in 1 kg Tissue (Kg of water/kg of dry Tissue) 1 0.8 0.6 0.4 0.2 0 + 0 100 20 40 60 80 Relative Humidity (%)