If 3 moles of sulfur reacted, how many grams of Fes will be produced?
8 Fe + Sy > 8 Fes

When the chemicals iron sulfide (fes) and hydrochloric acid (hcl) are combined, bubbles appear from the mixture. 1. does the appearance of bubbles indicate a physical or chemical change? 2. why do the bubbles indicate this change? 3. what property is this?

What is the effect of returning nuclear reactor cooling water back into bodies of water?

An unknown substance is a white solid at room temperature and has a melting point of 78 °c. which of the following substances is most likely to be the identity of the unknown sample?