Answer is: <span>a hill over which a wagon is pushed.
</span>For all chemical
reaction some energy is required and that energy is called activation
energy (<span>energy
that needs to be absorbed for a chemical reaction to start)<span>.
There are two types of reaction: endothermic
reaction (chemical reaction that absorbs more energy than it releases)
and exothermic reaction (chemical reaction that releases more energy than
it absorbs).
</span></span>R<span>eactions
occur faster with a catalyst because they require less activation energy.</span>
Answer: 5.22×10^24ato^2 H2O
Explanation:
If the moon did not rotate we would see all hemispheres of the moon as it revolves around the Earth and not just the phases.
C
Why? As you increased energy levels the distance between two energy levels gets larger. This is often due to shielding
