How many grams are in 4.5 mol of CO2?

How many atoms are in 1.4 mil of phosphorus trifluoride (pf3)

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?

All of the following are part of the biosphere except