A 120-G Block of Copper Is Taken from a Kiln $\degree$

question 28

Multiple Choice

A 120-g block of copper is taken from a kiln and quickly placed into a beaker of negligible heat capacity containing 300 g of water.The water temperature rises from 15 $\degree$ C to 35 $\degree$ C.Given c_Cu = 0.10 cal/g* $\degree$ C,and c_water = 1.00 cal/g* $\degree$ C,what was the temperature of the kiln?

• A)500 \(\degree\)C
• B)360 \(\degree\)C
• C)720 \(\degree\)C
• D)535 \(\degree\)C

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Definitions:

Alger Hiss

A former U.S. government official who was accused of being a Soviet spy in 1948 and convicted of perjury in connection with this charge.

Julius Rosenberg

An American who, along with his wife Ethel, was convicted of espionage for the Soviet Union and executed in 1953, in a case that remains controversial.

Ethel Rosenberg

An American woman who, with her husband Julius Rosenberg, was convicted of espionage for allegedly passing atomic secrets to the Soviet Union during the Cold War.

Truman Doctrine

A United States policy, established in 1947, aimed at containing the spread of communism beginning with aid to Greece and Turkey.