Hess law - Study guides, Class notes & Summaries

AQA A LEVEL Chemistry All Answers Correct 2024 Relative atomic mass of an atom of Carbon-12 Relative molecular mass carbon-12 atom The Avogradro constant ideal gas equation The average mass of an atom of an element, relative to 1/12th of the mass Average mass of a molecule compared to 1/12th of the mass of a the number of particles in a mole pV = nRT empirical formula the simplest whole number ratio of atoms of each element in a compound percentage atom econom...

AQA A LEVEL Chemistry Exam 2023 Relative atomic mass - correct answer The average mass of an atom of an element, relative to 1/12th of the mass of an atom of Carbon-12 Relative molecular mass - correct answer Average mass of a molecule compared to 1/12th of the mass of a carbon-12 atom The Avogadro constant - correct answer the number of particles in a mole ideal gas equation - correct answer pV = nRT empirical formula - correct answer the simplest whole number ratio of atoms of...

Enthalpy of combustion (∆Hc) - ANSWER-The enthalpy change that occurs when one mole of a substance is burnt completely in oxygen under standard conditions Enthalpy of Formation (∆Hf) - ANSWER-The enthalpy change that occurs when one mole of a substance is formed from its elements in their standard states under standard conditions Enthalpy - ANSWER-The thermal energy stored in a chemical system. It is defined by: Enthalpy = Internal energy of the system + (pressure x volume) H = U...

AQA A LEVEL Chemistry QUESTIONS AND ANSWERS LATEST TOP SCORE. Relative atomic mass - ANS.The average mass of an atom of an element, relative to 1/12th of the mass of an atom of Carbon-12 Relative molecular mass - ANS.Average mass of a molecule compared to 1/12th of the mass of a carbon-12 atom The Avogradro constant - ANS.the number of particles in a mole ideal gas equation - ANS.pV = nRT empirical formula - ANS.the simplest whole number ...

Civil Procedure Final Exam litigation - ANS the process by which parties seek to resolve their dispute by going to court Sources of legal authority - ANS A. 1) constitutions (highest form of law); 2) statutes (acts of congress, peoples reps from each state); 3) court rules (procedures in every court system); 4) case law primary, and potentially binding ; 5) treaties; 6) regulations; 7) ordinances stare decisis - ANS top down precedent, must abide by decided cases-This e...

Which of the following is true about the Nurse Competence in Aging (NCA) initiative? a. It was developed to support the professional development and leadership growth of nurses who provide care to older adults in long-term care. b. It developed resources for nurses to access evidence-based information on topics related to the care of older adults. c. It provides predoctoral and postdoctoral scholarships for study and research in geriatric nursing. d. It developed the first certification i...

AQA A LEVEL CHEMISTRY END TERM EXAM 2023 repulsion in shapes of molecules - ANSWER-Lone pair-lone pair > lone pair bonding pair > bonding pair-bonding pair electronegativity - ANSWER-the power of an atom to attract the pair of electrons in a covalent bond hess' law - ANSWER-Total enthalpy change for a reaction is independent of the route chosen mean bond enthalpy - ANSWER-The energy required to break a covalent bond into gaseous atoms averaged over different ...

AQA A LEVEL Chemistry questions and answers 100% guaranteed success. Relative atomic mass - correct answer. The average mass of an atom of an element, relative to 1/12th of the mass of an atom of Carbon-12 Relative molecular mass - correct answer. Average mass of a molecule compared to 1/12th of the mass of a carbon-12 atom The Avogradro constant - correct answer. the number of particles in a mole ideal gas equation - correct answer. pV = nRT empirica...

Standard enthalpy of formation correct answer: enthalpy change when it is made from the stable form of its elements at standard condition combustion enthalpy correct answer: exothermic, so always negative atomisation enthalpy correct answer: endothermic, so always positive ∆H(rxn)= correct answer: ∑∆Hºf(products) - ∑∆Hºf(reactants) standard enthalpy of formation correct answer: change of enthalpy during the formation of one mole of the substance from its constituent ...

Relative atomic mass The average mass of an atom of an element, relative to 1/12th of the mass of an atom of Carbon-12 Relative molecular mass Average mass of a molecule compared to 1/12th of the mass of a carbon-12 atom 00:02 01:39 The Avogradro constant the number of particles in a mole ideal gas equation pV = nRT empirical formula the simplest whole number ratio of atoms of each element in a compound percentage atom economy (Mass of desired p...