Answer:
D) Adding a catalyst
Explanation:
Adding a catalyst decreases activation energy and allows the reaction to occur more easily.
Answer:
the lack of maria; the thicker crust means it was harder for giant impacts to pierce the crust and get darker basaltic lava bubbling up.
Explanation:
We have as a reagent a salt, lead nitrate (Pb(NO3)2), and an unknown solution that gives us as a product lead chloride (PbCl2). That is, the solution must contain chlorine.
If a chlorine solution is used we will have the following reaction:
So, with a chlorine solution, we will have a white precipitate of lead chloride.
Answer:
Have no valence electrons because they are stable.
Thank you.
BY GERALD GREAT
Answer:
The ice cubes gain energy
Explanation:
The ice cubes are gaining energy from the water's carbon dioxide, or H2O. They then melt because they cannot hold that energy.
