A Scientist Is Performing a Calorimetric Test with an 800-G

question 1

Multiple Choice

A scientist is performing a calorimetric test with an 800-g sample of an unknown substance.She finds that the sample absorbs 152 calories for every ºC it rises in temperature while in its solid phase.What might the substance be?

• A)granite: c = 0.19 kcal/kg·ºC
• B)copper: c = 0.09 kcal/kg·ºC
• C)lead: c = 0.03 kcal/kg·ºC
• D)iron: c = 0.11 kcal/kg·ºC
• E)wood: c = 0.40 kcal/kg·ºC

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Definitions:

Standard Deviation

An indicator of the spread or distribution of a group of numbers, showing the degree to which these numbers vary from the average.

Uniform Distribution

A type of probability distribution in which all outcomes are equally likely over a given interval.

Probability

The measure of the likelihood that a specific event will occur, expressed as a number between 0 and 1.

Subway Waiting

The time period a passenger waits for a subway train to arrive, typically considered as a random variable in transit studies.