Final answer:
The student's question pertains to radioactive decay and the calculation of the amount of a substance remaining after 11,400 years, starting with a 16 gram sample. To accurately determine this amount, the half-life of the substance is required.
Step-by-step explanation:
The question posed appears to relate to the concept of radioactive decay, specifically the half-life of a substance. When discussing how much of a 16 gram sample remains after 11,400 years, we are typically referring to a situation in which a radioactive substance undergoes decay over a period of time, ending with a smaller amount of the original substance left.
Based on similar examples and typical decay problems, we can infer that the substance in question has a known half-life, which is the duration of time it takes for half of the radioactive atoms in a sample to decay. The question seems to be seeking the calculation of the remaining amount of a radioactive substance after it has decayed for a specific amount of time, given its initial mass and the time elapsed. Unfortunately, to provide an accurate answer, we need to know the half-life of the substance in question. Without this information, it is impossible to determine precisely how much of the 16 grams would remain after 11,400 years.