A 307-G Sample of an Unknown Mineral Was Heated to 98.7°C

question 133

Multiple Choice

A 307-g sample of an unknown mineral was heated to 98.7°C and placed into a calorimeter containing 72.4 g of water at 23.6°C. The heat capacity of the calorimeter was 15.7 J/°C. The final temperature in the calorimeter was 32.4°C. What is the specific heat capacity of the mineral?

• A) 0.124 J/g·°C
• B) 0.131 J/g·°C
• C) 0.138 J/g·°C
• D) 0.145 J/g·°C
• E) None of these choices is correct.

---

Definitions:

Intrinsic motivation

The drive to engage in an activity for its own sake, rather than for some external reward or pressure.

Parental expectations

The beliefs or hopes parents have regarding their children's behavior, achievement, attitudes, and the values they should adopt.

Academic stress

The feeling of tension and anxiety related to academic challenges and expectations.

Biofeedback markers

Physiological indicators, such as heart rate and muscle tension, monitored during biofeedback therapy to help individuals control bodily processes.