Energy enthalpy entropy - Study guides, Class notes & Summaries

CHEM191 Module 2 Exam Questions With 100% Correct Answers What is kinetic energy? - answerenergy of motion what is potential energy? - answerenergy of relative position 0 chemical bonds act as a store of potential energy what happens in terms of heat when a chemical reaction happens? - answerheat (q) is either absorbed or released by the reaction. what is enthalpy? - answerthe heat of reaction measured under conditions of constant pressure. how can the change in enthalpy be determined? ...

Standard enthalpy of formation ֎ -:- The enthalpy change when one mole of a compound is formed from its elements under standard conditions, with all substances in their standard states. Standard change of atomisation ֎ -:- The enthalpy change when one mole of gaseous atoms is formed from the element in its standard state under standard conditions. First ionisation energy ֎ -:- The enthalpy change needed to remove one electron from each atom in one mole of gaseous atoms to form on...

prokaryote correct answers small, simple, single celled organisms adapt to change very quickly does not have a nucleus does not have membrane bound organelles have ribosomes for protein synthesis from an RNA message eukaryote correct answers true nucleus large, complex cells, make up multi-cellular organisms have organelles- specialized functions differentiation of cells to unique and specialized cell types linear DNA L amino acids correct answers the only type of amino acid used t...

System - The portion of the universe we have singled out for study surroundings - Everything else in the universe universe - System and surroundings work - the action of a force through a distance heat - Transfer of energy from hotter to colder object heat capacity - The amount of heat needed to raise the temperature by 1 K Heat Tax - Increase in surroundings comes from the heat from the system Kinetic energy - Energy of motion potential energy - Energy of an object by virtue of its posi...

Portage Learning CHEM 210 exams 1-8 and final exam Question 1 3 / 3 pts True or False: According to the Module, a compound with a molecular mass of 1,000 g/mol is considered a macromolecule. True Correct! False Question 2 3 / 3 pts True or False: Biomolecules can have only two functional groups. True Correct! False Question 3 3 / 3 pts True or False: The following functional group is an alcohol. True Correct! False Question 4 3 / 3 pts True or False: In ...

Which contains more energy: 25 g of boiling water at 100⁰C or 25 g of steam at 100⁰C? a. 25 g of boiling water at 100⁰C b. 25 g of steam at 100⁰C c. Both contain the same amount of energy. d. The relative amounts of energy cannot be determined from the information given. b. 25 g of steam 100⁰C Which of the following statements best explains the fact that the change in internal energy (∆Ε) equals the difference of the final value and the initial value? a. the value of in...

What is a metabolic pathway? - Answer-A pathway that a molecule goes through, resulting in a specific product. What is metabolism? - Answer-The totality of an organisms chemical reactions Gibbs free energy - Answer-Portion of a system that can perform work when temp and pressure are uniform throughout the system. What is a way to show change in free energy? - AnswerWhat does a negative Delta G mean? - Answer-A process that is spontaneous What does spontaneous mean? - Answer-Means that a pr...

energy - capacity to do work Compare potential energy and kinetic energy. Classify different energy forms into one of these two categories - potential energy is the possibility to do work: -chemical potential -concentration gradient -gravitational -stored mechanical kinetic energy -electrical -sound -radiant -thermal -motion Explain why cells need energy? Describe the types and examples of cellular work. - 1. synthetic work 2. mechanical work 3. concentration work 4. electrical ...

CEM 142 EXAM 1 LATEST UPDATE GRADED A+ bond BREAKING ABSORB energy from surroundings -requires energy to overcome bond FORMING RELEASE energy to surroundings effective nuclear charge charge felt by valence electrons -increase in ENC attracts electrons more strongly toward the nucleus Coulomb's Law opposite charges attract -like charges repel F=kq1q2/r^2 electron pair geometry SHAPE INCLUDING LONE PAIRS -count as bonds molecular shape not including lone pairs ...

1. Lactose intolerance is due to the a. inability to hydrolyze polysaccharides. b. body’s ability to digest lactose but inability to absorb the resulting products. c. gaseous side products produced in the small intestine. d. inability to produce the enzyme lactase. e. inability to oxidate luciferase. Answer: d Textbook Reference: 8.0 Lactase deficiency, p. 148 Bloom’s Category: 2. Understanding 2. Water held back by a dam represents what kind of energy? a. Hydroelectric b. Irrig...