What is Hess's Law and how are the change of Hrxn and the change of Hf different? Enthalpy: This term is associated with the amount of heat and it is defined as the sum of internal energy of a system and work done by the system or on the system. The...
The following is a summary of a sample syllabus supplied by the College Boardthat goes through all the units that would be taught in a standard AP Chemistry course. It also provides the number of class periods allotted for each unit. This syllabus is based on the pre-2019 updates to the ...
If Delta H_forward is -230 kJ and the activation energy of the forward reaction is 150 kJ, what is the activation energy of the reverse reaction? Calculate the reaction enthalpy for the reaction, CH4(g)+2O2(g) --> CO2(g)+2H2O(l), using Hess's Law. A certain reaction has an ent...
The seventh chapter of our Chemistry Tutorial is now complete. Lesson 2d on the topic of Empirical and Molecular Formulae is now live. We have been planning Chapter 8 on the topic of Chemical Reactions. The Table of Contents for Chapter 8 is also live. The first pages should start coming...
A Review of What the Best Law Teachers Do by Michael Hunter Schwartz, Gerald F. Hess, and Sophie M. Sparrowlegal writingteachingeducationIn What the Best Law Teachers Do, Michael Hunter Schwartz, Gerald F. Hess, and Sophie M. Sparrow sought to identify what attributes and practices contribute...
Q: I thought the Florida Court was not allowed to change the Legislature's law after the election. A: Right.Q: So what's the problem? A: They should have. The US Supreme Court said the Florida Supreme Court should have "adopt[ed] adequate statewide standards for determining what is a...
Hess, and Sophie M. Sparrow, What the Best Law Teachers Do (Book Review)Do you remember the best professor you had in law school? What made her the best? Was it his passion for, or knowledge about, the subject matter? Was it the wayWeresh, MelissaSocial Science Electronic Publishing...
The law was stated by a scientist called Hess. This is also referred to as the law of constant heat summation. During the production of one chemical from another, some heat is involved, which is found to be the same in all the stages. This is the same till t...
How does Hess's law help us determine the enthalpy change of a reaction? How do you draw an enthalpy diagram? When is the enthalpy change zero? Find the molar enthalpy of vaporization for a substance, given that 3.21 mol of the substance absorbs 28.4 kJ of energy as heat when the substa...
Learn about enthalpy of reaction and enthalpy change formula. Understand what Delta H is, the Delta H equation, and how to calculate the enthalpy of reaction. Related to this Question How can Hess's law be used to calculate the enthalpy change (H) for ...