Theo mixes cake batter and places it in the oven at 350°f for 45 minutes. explain what type of reaction baking a cake represents in terms of energy.

Baking a cake creates a endothermic reaction. When heated, the baking soda/powder reacts, the eggs change form, and everything else follows suit. The baking soda/powder creates the rising of the cake.

.) the observation by semmelweis that more mothers died of childbed fever when their doctors also worked in the morgue