contestada

15)
Common Metals
Name Melting Point Density (w/cm)
Zinc
419.53 °C 7.134
Nickel 1455°C 8.912
Copper 1084.62°C 8.96
Silver 961.78°C 10.501
Gold 1064.18°C 19.282
You are hired as a scrap metal dealer. A customer wants to sell you a piece of precious scrap metal. You know it is one of these
common metals. You slowly heat the metal and it melts at 962 °C. You also take the density of the metal and find it to be roughly
10.5 g/cm? What is the MOST LIKELY identity of the metal?
copper
A)
B
B)
gold
C)
silver
D)
zinc

Respuesta :

The data given are 

           melting point            density 

Zinc        419.53 oC              7.134

Nickel      1455oC                 8.912

Copper  1084.62oC              8.96

Silver        961.78oC           10.501

Gold        1064.18oC          19.282

density is the mass per unit volume. Melting point is determined by the intermolecular forces between particles in the solids.

We have been asked to find which cube weighs the most 

density = mass/volume 

when volume is constant for all the metals, then density is directly proportional to mass. Therefore metal with highest density has the highest mass.

from the given metals, metal with highest density is Gold.

correct answer is Gold.