A certain substance has a specific heat of 𝐚=(Δ𝐯)/(Δt) and a melting point of 350 K. If one mole

Name: Problem 10, Chapter :
Uploaded: 2020-07-14T22:19:12-08:00
Duration: 1 min 22 s
Channel: Averell Hause
Description: A certain substance has a specific heat of 𝐚=(Δ𝐯)/(Δt) and a melting point of 350 K. If one mole of the substance is currently at a temperature of 349 K, how much energy must be added in order to melt it? a .More than 1 J b. Exactly 1 J c. Less than 1 J but more than 0 J d. Less than 0 J

step 1 So the total amount of heat that would be needed in order to melt it would be the mass of the su

Question

A certain substance has a specific heat of $\overline{\mathbf{a}}=\frac{\Delta \mathbf{v}}{\Delta t}$ and a melting point of $350 \mathrm{K}$. If one mole of the substance is currently at a temperature of $349 \mathrm{K}$, how much energy must be added in order to melt it? a .More than $1 \mathrm{J}$ b. Exactly $1 J$ c. Less than 1 J but more than 0 J d. Less than 0 J

   A certain substance has a specific heat of $\overline{\mathbf{a}}=\frac{\Delta \mathbf{v}}{\Delta t}$ and a melting point of $350 \mathrm{K}$. If one mole of the substance is currently at a temperature of $349 \mathrm{K}$, how much energy must be added in order to
melt it?
a .More than $1 \mathrm{J}$
b. Exactly $1 J$
c. Less than 1 J but more than 0 J
d. Less than 0 J

Instant Answer

Solved by Expert Averell Hause

07/14/2020

Step 1

In this case, the change in temperature is $350K - 349K = 1K$. Show more…

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A certain substance has a specific heat of $\overline{\mathbf{a}}=\frac{\Delta \mathbf{v}}{\Delta t}$ and a melting point of $350 \mathrm{K}$. If one mole of the substance is currently at a temperature of $349 \mathrm{K}$, how much energy must be added in order to melt it? a .More than $1 \mathrm{J}$ b. Exactly $1 J$ c. Less than 1 J but more than 0 J d. Less than 0 J

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Key Concepts

Specific Heat Capacity

Specific heat capacity is the quantity of heat required to raise the temperature of a unit amount (by mass or mole) of a substance by one degree Kelvin. It is vital for determining how much energy is necessary to bring a substance from one temperature to another before any phase change occurs.

Latent Heat of Fusion

The latent heat of fusion is the energy required to change a substance from the solid phase to the liquid phase at its melting point, without a change in temperature. This energy goes into breaking the molecular bonds rather than increasing the kinetic energy of the particles.

Phase Transition

Phase transition is the process whereby a substance changes its state, such as from solid to liquid. During such a transition, energy is absorbed by the substance but its temperature remains constant until the transition is complete.

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