Answer: Read Explanation
Explanation: Index fossils are useful because they tell the relative ages of the rock layers in which they occur. Geologists use particular types of organisms, such as trilobites, as index fossils.
Answer:
Explanation:
Molecular FormulaC4H7O2
Average mass87.098 Da
Monoisotopic mass87.045151 Da
endo takes energy in and exo releases it out
Energy transfers to the metal from the water and calorimeter until they are all at room temperature.
i hope this helps
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392.16 g/mol
