If the Heat Given Off by 300 G of an Alloy

question 48

Multiple Choice

If the heat given off by 300 g of an alloy as it cools through 50 Cº is sufficient to raise the temperature of 300 g of water from 30º to 40ºC,the specific heat of the alloy must be approximately

• A)0.015 cal/g · Cº
• B)0.10 cal/g · Cº
• C)0.15 cal/g · Cº
• D)0.20 cal/g · Cº
• E)0.50 cal/g · Cº

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Definitions:

pH

A numerical scale used to specify the acidity or basicity of an aqueous solution, where 7 is neutral, values less than 7 are acidic, and values greater than 7 are basic or alkaline.

Expiratory Reserve Volume

The additional amount of air that can be forcefully exhaled after a normal exhalation, used to measure lung function.

Inspiratory Reserve Volume

The additional amount of air that can be inhaled after a normal inhalation, contributing to the total lung capacity.

Peak Expiratory Flow

A measure of the fastest speed at which a person can exhale air after a maximal inhalation, often used in diagnosing and monitoring asthma.