Answered

Discover the answers you need at Westonci.ca, a dynamic Q&A platform where knowledge is shared freely by a community of experts. Ask your questions and receive detailed answers from professionals with extensive experience in various fields. Get quick and reliable solutions to your questions from a community of experienced experts on our platform.

A chemist is trying to identify a sample of metal listed in the table below. She finds that the metal is one of the best conductors and does not melt at [tex]$1000^{\circ} C$[/tex]. Which type of metal does the chemist have?

[tex]\[
\begin{tabular}{|l|l|l|}
\hline
Material & Melting Point $\left(^{\circ} C \right)$ & Electrical Conductivity Ranking \\
\hline
aluminum & 660 & 3 \\
\hline
copper & 1085 & 2 \\
\hline
zinc & 420 & 4 \\
\hline
silver & 962 & 1 \\
\hline
nickel & 1455 & 5 \\
\hline
\end{tabular}
\][/tex]

A. aluminum
B. copper
C. zinc
D. silver
E. nickel

Sagot :

GinnyAnswer
To determine which metal the chemist has, follow these steps:

1. Examine Melting Points: The metal does not melt at 1000°C. This means that the metal's melting point must be higher than 1000°C.
- Aluminum: Melting point = 660°C (less than 1000°C) -> Eliminate aluminum
- Copper: Melting point = 1085°C (greater than 1000°C)
- Zinc: Melting point = 420°C (less than 1000°C) -> Eliminate zinc
- Silver: Melting point = 962°C (less than 1000°C) -> Eliminate silver
- Nickel: Melting point = 1455°C (greater than 1000°C)

Based on melting points alone, the possibilities are narrowed down to copper and nickel.

2. Examine Electrical Conductivity: Next, we need to look at the electrical conductivity ranking to determine which of these remaining metals is the best conductor.
- Copper: Electrical conductivity ranking = 2
- Nickel: Electrical conductivity ranking = 5

Since the metal is one of the best conductors and among the given options, a lower ranking number means better conductivity, copper has a better conductivity ranking (2) compared to nickel (5).

Therefore, the metal the chemist is working with must be Copper (B).
We hope our answers were useful. Return anytime for more information and answers to any other questions you have. We appreciate your visit. Our platform is always here to offer accurate and reliable answers. Return anytime. We're dedicated to helping you find the answers you need at Westonci.ca. Don't hesitate to return for more.