How many joules of energy are needed to raise the temperature of an item 55 degreesif the heat capacity of the item is 259 J/"C?O 20400JO 314JO 14245 JO 4.7JQuestion 4What temperature change would you expect if you have an object that has a specificheat capacity of 982 J/g.°C, a mass of 75.2 grams, and it released 3476.2 joules ofheat.O 47.1 KO 47.1 KO -45 KO 45 KQuestion 9For the same substance, the enthalpy of fusion is much lower than the enthalpy ofvaporization (fusion= 6.02 kJ/mol and vaporization= 40.65 kJ/mol). What would bethe correct full explanation for why this occurs?O When you melt a solid into a liquid, you need to completely overcome the intermolecularforces holding the molecules togetherO When you vaporize a liquid, you have to break bondsO When you turm a liquid into a gas, you need to completely overcome the intermolecularforces holding the molecules togetherO When you melt a solid into a liquid, you need to break the bonds

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How many joules of energy are needed to raise the temperature of an item 55 degrees if the heat capacity of the item is 259 J/"C? O 20400J O 314J O 14245 J O 4.71

Chemistry for Engineering Students

4th Edition

ISBN:9781337398909

Author:Lawrence S. Brown, Tom Holme

Publisher:Lawrence S. Brown, Tom Holme

Chapter9: Energy And Chemistry

Section: Chapter Questions

Problem 9.104PAE: 9.104 An engineer is using sodium metal as a cooling agent in a design because it has useful thermal...

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Question

How many joules of energy are needed to raise the temperature of an item 55 degrees
if the heat capacity of the item is 259 J/"C?
O 20400J
O 314J
O 14245 J
O 4.7J
Question 4
What temperature change would you expect if you have an object that has a specific
heat capacity of 982 J/g.°C, a mass of 75.2 grams, and it released 3476.2 joules of
heat.
O 47.1 K
O 47.1 K
O -45 K
O 45 K
Question 9
For the same substance, the enthalpy of fusion is much lower than the enthalpy of
vaporization (fusion= 6.02 kJ/mol and vaporization= 40.65 kJ/mol). What would be
the correct full explanation for why this occurs?
O When you melt a solid into a liquid, you need to completely overcome the intermolecular
forces holding the molecules together
O When you vaporize a liquid, you have to break bonds
O When you turm a liquid into a gas, you need to completely overcome the intermolecular
forces holding the molecules together
O When you melt a solid into a liquid, you need to break the bonds

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