In an experiment to investigate the transpiration rates of different surfaces of Ficus elastica leaves, a student applied waterproof petroleum jelly to seal the entire lower surface of a leaf, leaving only the upper surface exposed.
The exposed upper surface of this leaf had an area of 16 cm2. Over a period of 12.5 hours12.5\text{ hours}12.5 hours, the leaf lost 0.35 g of water.
Calculate the rate of water loss from the exposed upper surface of this leaf in g cm−2 hour−1\text{g}\text{ cm}^{-2}\text{ hour}^{-1}g cm−2 hour−1.
