Answered: 1771 joules are heated. Determine how…

1771 joules are heated. Determine how many moles of tin have solidified under these conditions (pressure latm and temperature 495k)?

Chemistry for Engineering Students

4th Edition

ISBN:9781337398909

Author:Lawrence S. Brown, Tom Holme

Publisher:Lawrence S. Brown, Tom Holme

Chapter8: Molecules And Materials

Section: Chapter Questions

Problem 8.88PAE

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States of Matter

The substance that constitutes everything in the universe is known as matter. Matter comprises atoms which in turn are composed of electrons, protons, and neutrons. Different atoms combine together to give rise to molecules that act as a foundation for all kinds of substances. There are five states of matter based on their energies of attraction, namely solid, liquid, gases, plasma, and BEC (Bose-Einstein condensates).

Chemical Reactions and Equations

When a chemical species is transformed into another chemical species it is said to have undergone a chemical reaction. It consists of breaking existing bonds and forming new bonds by changing the position of electrons. These reactions are best explained using a chemical equation.

Question

From two moles of molten tin whose temperature at a
constant pressure of latm has quickly reached 495k.
1771 joules are heated. Determine how many moles of tin
have solidified under these conditions (pressure 1atm and
temperature 495k)?
ΔΗ
T0T0 Jlmel
Imon =505 K
cp 12,5 26 x 1o T JImol
2,2x10 T Jmol

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