That depends on the individual chocolate cake recipe.
about 260 calories per slice.
300-400
It depends a lot on factors of the cake, such as icing, layers, fillings, decorations (sprinkles, shaved chocolate, piping, ect.) and they type of cake (milk chocolate, baking chocolate, dark chocolate, ect.). Generally, a small slice of fairly simple and plain chocolate cake will be about 200 calories. A large slice can be about 400 calories. But a more complex cake can be up to 700 or 800 calories a slice.
That depends oh how big is the slice and how many are there but i think this site might be helpful: http://caloriecount.about.com/calories-stater-bros-double-chocolate-cake-i115093
2 cups of pure cane sugar
The average chocolate bar has 210 calories. The average slice of chocolate cake (commercially prepared, with frosting) has about 250 calories. Just remember: these numbers aren't exact, and the actual numbers can vary depending on the brand, recipe, etc.
about 294 calories
I would say there is about 250 calories in a piece of white cake with frosting.
Figis Chocolate Mousse Cake has 150 calories.
432 calories per slice
There are about 1,500-2,500 calories in a full chocolate cake, depending on the size of the cake and the recipe used.
There are 330 calories in one slice of birthday cake from Publix.