Each atom of protium has one proton no neutrons and one electron each atom of deuterium has one proton two neutrons and one electron are these the same or different why?

Identify and describe the three ways that mutations affect organisms.

Find the number of grams of hcl needed to react completely with .50 moles of magnesium.

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?