To prepare a Watergate Cake III recipe, first preheat the oven to 350?F (177?C) and grease and flour two 8-inch round cake pans. In another large bowl, combine the flour, baking powder, sugar, salt and baking soda. Gradually add the wet ingredients to the dry ingredients, mixing well after each addition. Pour the batter into the prepared pan and bake the cake for 35 to 40 minutes, or until the toothpick inserted in the center comes out clean. Allow to cool before removing from the pan.