How can water cause both chemical and physical weathering?

1. baking powder is a 1: 1 molar mixture of cream of tartar (khc4h4o6) and baking soda (nahco3). a recipe calls for two teaspoons (a total of 8.0 grams) of cream of tartar. how much baking soda must be added for both materials to react completely?

The excretory system,need answers for all: )

Areaction in which products can react to re-form reactants is