Scientists discovered that stars i. n the universe are mostly composed of which elements?

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?

Which element would mostly likely have an electron affinity measuring closest to zero

How many grams of magnesium metal will react completely with 8.3 liters of 5.5m hcl? show all work