Cake, angelfood, commercially prepared: piece (1/12 of 12 oz cake) to Grams
Quick answer
One piece (1/12 of 12 oz cake) of cake, angelfood, commercially prepared weighs 28 grams.
1 piece (1/12 of 12 oz cake)28 g
Reference serving (nutrition facts)100 g
Source: USDA FoodData Central - SR Legacy (2018-04) (USDA household portion weight)