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August 30, 2014

Posts by chirikamo


Total # Posts: 5

IB Chemistry
Why don't we use the bomb calorimeter to calculate the heat energy in the combustion of alcohol but we use the copper cup calorimeter?
March 1, 2013

IB Chemistry
I based on the formular to calculate enthalpy change is equal to the bond enthalpy total for the reactants subtracting from the bond enthalpy for products.Hence,if the reaction is endothermic,then the bond enthalpy total for the reactants is greater than for the products
February 28, 2013

IB Chemistry
Which statements are correct for an endothermic reaction? I. The system absorbs heat. II. The enthalpy change is positive. III. The bond enthalpy total for the reactants is greater than for the products. A. I and II only B. I and III only C. II and III only D. I, II and III ...
February 28, 2013

chemistry
Thanks for helping me DrBob222.I am studying IB program and I have many questions and problems I do not understand about chemistry.I will post them later.I hope you can follow and help me.I am so grateful.Thank you so much ^_^
February 18, 2013

chemistry
This question id from IB exam,please help! 1)Which compound has the highest lattice enthalpy? A. CaO B. CaS C. LiF D. LiI Explain the reason ?
February 18, 2013

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