How many molecules are there in 3.20 grams of NH4SO2

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?

What atom has the largest atomic radius

How many atoms or molecules are there in a mole of a substance?