A Glass Beaker of Unknown Mass Contains $74.0 \mathrm { ml }$

question 104

Multiple Choice

A glass beaker of unknown mass contains $74.0 \mathrm { ml }$ of water. The system absorbs $2000.0 \mathrm { cal }$ of heat and the temperature rises $20.0 ^ { \circ } \mathrm { C }$ as a result. What is the mass of the beaker? The specific heat of glass is 0.18 cal/g ? °C, and that of water is 1.0 cal/g ? C°.

• A)140 g
• B)560 g
• C)540 g
• D)270,000 g

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Definitions:

Reinforcement-Seeking Behavior

Actions specifically performed with the intention of obtaining reward or reinforcement.

Place Cells

Neurons in the hippocampus that become active when an animal is in or is thinking about a specific location.

Reward

An incentive or positive reinforcement that promotes a desired behavior by providing pleasure or satisfaction.