In an attempt to identify an unknown metal, a scientist measures out 20. grams of the unknown material and brings it to its melting temperature. The scientist then determines that the amount of energy required to completely melt all of the unknown metal is 2100 J. Use the table below to identify the metal:

metal Latent heat of fusion (J/g) Latent heat of vaporization (J/g)

Nickel 298 6430

Silver 105 2390

Aluminum 397 10900

nickel

silver

aluminum

none of the above

Latent heat of fusion is the amount of energy required to change the phase of metal from solid to liquid. While Latent heat of vaporization is the amount of energy required to change the phase of metal from liquid to gas.

Now, in the question the unknown metal melts from solid to liquid when [tex]2100 J[/tex] of energy is supplied.

None of the metal in the given set of options has " metal Latent heat of fusion" equal to or near to [tex]2100 J[/tex]

Thus, option D is correct.

carlosmmyr21 carlosmmyr21 · Answer 2 · 2021-07-24T03:29:02+02:00

Answer:

The answer is Silver

Explanation:

2100J/20g = 105 J/g

105 J/g is equal to silver

Latent hea of fusion is the same as latent heat of melting "Two common forms of latent heat are latent heat of fusion (melting) and latent heat of vaporization (boiling). These names describe the direction of energy flow when changing from one phase to the next: from solid to liquid, and liquid to gas." https://en.wikipedia.org/wiki/Latent_heat