In the Figure,the Ends of the Two Rods Are Separated $\circ$

question 49

Multiple Choice

In the figure,the ends of the two rods are separated by X at 25 ^$\circ$ C.The left rod is brass and 1 m long,whereas the right rod is steel and 1 m long.The rods just make contact with each other when they are both heated to 201ºC.Assuming that the far ends of both rods rest firmly against rigid wooden supports,what was their initial separation,X?

• A)5.0 mm
• B)7.5 mm
• C)4.7 mm
• D)5.6 mm
• E)6.3 mm

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Definitions:

Oxidation

A chemical process involving the loss of electrons or an increase in oxidation state by a molecule, atom, or ion.

Chromium

A chemical element with symbol Cr and atomic number 24, known for its high corrosion resistance and hardness.

Organic Product

Compounds primarily composed of carbon atoms, resulting from the synthesis in organic chemistry.

Major Structure

Refers to the principal arrangement or configuration of atoms within a molecule, often determining its chemical behavior.