You Have a Sediment Sample Taken from the Tropical Indo-Pacific

question 13

Multiple Choice

You have a sediment sample taken from the Tropical Indo-Pacific shallows. When acid is added to the sample, it bubbles and fizzes. What do you conclude?

• A) bubbles are due to mangnesium nodules.
• B) the sample is cosmogenous.
• C) the sample is terrigenous.
• D) the sample is biogenous.

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Definitions:

ΔH°

The standard enthalpy change, indicating the heat absorbed or released in a reaction at standard conditions (1 atm, 298 K).

ΔS°

Standard entropy change, a measure of disorder or randomness in a system during a process at standard conditions.

Reactant A

A placeholder term for a substance that undergoes a chemical change in a chemical reaction.

Product B

A term that broadly refers to a secondary or resultant compound generated in a chemical reaction, distinguished from other products by its labeling as "B".