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:

Experimental Method

A study in which a researcher manipulates a variable, referred to as the independent variable, measures possible effects on another variable, referred to as the dependent variable, and tries to hold all other variables constant.

Stereotype Threat

A situational predicament in which people are or feel themselves to be at risk of conforming to stereotypes about their social group.

Stigmatized Groups

Social groups that are subjected to discrimination, prejudice, and negative stereotyping based on perceived differences from the majority.

Performance Shortfalls

Situations where the actual outcomes do not meet the expected standards or goals, often leading to analysis and adjustment in strategies.