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Specific Heat chemistry problems
October 10, 2020 / Leave a comment
Specific Heat of Water example question
How much heat, in calories and kilocalories, does it take to raise the temperature of 814 grams of water from 18.0 degrees to 100 ºC?
Solution to this Specific Heat Chemistry practice problem is given in the video below!
Specific Heat of Iridium example problem
A 23.9-gram sample of iridium is heated to 89.7 ºC and then dropped into 20.0 grams of water in a calorimeter. The temperature of the water rises from 20.1 ºC to 22.6 ºC. Calculate the specific heat of iridium.
Solution to this Specific Heat Chemistry practice problem is given in the video below!
Enthalpy Change problems
May 6, 2019 / 2 Comments on Enthalpy Change problems
Enthalpy Change example question
Given the equation
2Ag2S(s) + 2H2O(l) → 4Ag(s) + 2H2S(g) + O2(g) ΔH = +595.5 kJ
calculate ΔH for the reaction
Ag(s) + 
H2S(g) + 
O2(g) → Ag2S(s) + H2O(l)
Solution to this Enthalpy Change practice problem is given in the video below!
First Law of Thermodynamics problems
Internal Energy example question
In a particular process, the internal energy of a system increases by 41.4 J and the quantity of work the system does on its surroundings is 81.2 J. Is heat absorbed or given off by the system? What is the value of q?
Solution to this Internal Energy practice problem is given in the video below!
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