Which of the following equations does not go against the Law of Conservation of Mass? 1. O Fe + 02 = Fe2O3
2. P + 02 - P205
3. FeS +2HCI FeCl2 + H2S
4. Li2O – Li + O2​

How many moles are in 250 grams of tungsten (w)? * 4.4x10^23 moles 4.2x10^23 moles 0.7 moles 1.4 moles

What does x represent in the formula for the compound xcl4?

What are the primary responsibilities of a chemical engineer involved in "r& d"? develop large scale manufacturing operations discover new products and processes training of new chemists determine products needed by consumers