A spotlight in a jeweller’s shop shines light on a diamond ring at an angle of 30° to the perpendicular. At what angle is light refracted through the stone?

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?

Sex cells from female reproductive organ? 1) mitosis 2) fertilization 3) zygote 4) eggs 5) meiosis 6) sperm

How manyatoms of mercury are in 1.4214e+1 ml sample