changes in the appearance of emission and absorption spectrums are caused by the activities of

If 1.8 l of water is added to 2.5l of a 7.0 m koh solution, what is the molarity of the new solution

In a reaction equation, where are the products located? a.) above the arrow b.) to the right of the arrow c.) to the left of the arrow d.) below the arrow

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?