Radiowave, microwave, infrared radiation
Answer:
a. ΔΗ > 0, solution feels cold
Explanation:
Hello,
In this case, endothermic process are those in which we can find that the products have more energy than the reactants, therefore energy is absorbed, for which the following equation:

Must be greater than 0 (positive) thereby, for a solution process we find that the solution feels cold, in such a way, answer is a. ΔΗ > 0, solution feels cold.
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Answer:
21. c
22. Water is pulled by gravity down below the cave mud. Go to GROUNDWATER. Water gathers into a passage as a spring & flows out
Explanation:
Answer:
d
Explanation:
HF gives its H to HPO42 making it H2PO4, so HF is the acid and F- is the conj base