Balance the below equation and attach your work. Do not worry about getting the correct answer, just try to follow the process for balancing equations and you must show your work for credit. Na3PO4+CaCI2 --->NaCI+ Ca(PO4)2

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?