Answer: Groundwater that forms caves because it is slightly acidic.
Explanation:
The water under the ground present inside the cracks and spaces in sand, soil and rocks is called ground water.
When ground water moves through the soil it results in the formation of acid. Further, this acid helps minerals to get dissolve. These minerals get deposited on other places as well.
This process of deposition and erosion helps in the formation of caves.
Thus, it can be concluded that groundwater that forms caves because it is slightly acidic.
Answer: You would have the worst experience ever
Explanation: Don’t try it.
The question is incomplete, here is the complete question:
If you performed a combustion reaction of 2-ethyl-1-methylpropene, what products would you expect to be present?
Answer: The products of the combustion of 2-ethyl-1-methylpropene are carbon dioxide and water.
<u>Explanation:</u>
Combustion reaction is defined as the reaction in which a hydrocarbon reacts with oxygen gas to produce carbon dioxide gas and water molecule.

We are given a chemical compound, which is 2-ethyl-1-methylpropene. The chemical formula of this compound is 
The chemical equation for the combustion of 2-ethyl-1-methylpropene follows:

By Stoichiometry of the reaction:
4 moles of 2-ethyl-1-methylpropene reacts with 37 moles of oxygen gas to produce 24 moles of carbon dioxide and 26 moles of water
Hence, the products of the combustion of 2-ethyl-1-methylpropene are carbon dioxide and water.