How many protons electrons and nuetrons does zn have

The best solution for preventing harm to people and pets from severe hurricanes involves determining and warning residents about what

Define the kinetic molecular theory

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?