What do I possibly answer here?
ask a full question pls!
Mass cannot be created nor destroyed as well.
So, energy just goes into other things.
Example: you are born. You have carbon dioxide in your body, (or star dust). When you die, your body releases that gas.
Make sense?
I hope this helps! (:
Answer:
B) a substance's color and odor changed Explanation: A signal that a chemical change has occurred is when its odor (its smell) or its appearance has changed.
Answer:
I think it is true, but I am not to sure.
<span>Here's your balanced chemical equation:
Pb(NO3)2</span><span> (aq) + K2SO4 (aq) </span>⇒<span> PbSO4 (s) + 2KNO3 (aq)
Therefore the precipitate formed is </span>lead(II) <span>sulfate.</span>
