final-H-2006-07-v1
... 40. In Figure 14-4, where do the three phases exist in equilibrium? a. only at the origin c. on any solid line b. only at the triple point d. between any two solid lines 41. In Figure 14-4, what phase would be present at 15 oC and 20 mmHg? a. solid b. liquid c. gas d. vapor 42. Which of the followin ...
... 40. In Figure 14-4, where do the three phases exist in equilibrium? a. only at the origin c. on any solid line b. only at the triple point d. between any two solid lines 41. In Figure 14-4, what phase would be present at 15 oC and 20 mmHg? a. solid b. liquid c. gas d. vapor 42. Which of the followin ...
final-H-2006-07-v2
... d. being represented by the symbol M e. all of the above 77. Mole fraction is a. moles of reactant compared to moles product b. moles of acid compared to moles of base c. moles of substance compared to total moles 78. A solution which, upon mixing for a long period of time, still contains undissolve ...
... d. being represented by the symbol M e. all of the above 77. Mole fraction is a. moles of reactant compared to moles product b. moles of acid compared to moles of base c. moles of substance compared to total moles 78. A solution which, upon mixing for a long period of time, still contains undissolve ...
1) Which of the following correctly lists the atoms in order of
... 9) The total number of moles of OH−ions in a mixture of 25.0 mL 0.300 M NaOH and 50.0 mL 0.200 M Ba(OH)2 is ____________. (Assume both substances completely ionize in water solution.) b) 7.53×1021 c) 0.0125 d) 0.0275 e) 0.0225 a) 1.36×1022 ...
... 9) The total number of moles of OH−ions in a mixture of 25.0 mL 0.300 M NaOH and 50.0 mL 0.200 M Ba(OH)2 is ____________. (Assume both substances completely ionize in water solution.) b) 7.53×1021 c) 0.0125 d) 0.0275 e) 0.0225 a) 1.36×1022 ...
Chemical Reactions-Multiple Choice Review
... C) Ba2+ and SO42D) Na+ and IE) SO42- and I41) Which ion(s) is/are spectator ions in the formation of a precipitate of AgCl via combining aqueous solutions of CoCl2 and AgNO3? A) Co2+ and NO3B) NO3- and ClC) Co2+ and Ag+ D) ClE) NO342) The balanced net ionic equation for precipitation of CaCO 3 wh ...
... C) Ba2+ and SO42D) Na+ and IE) SO42- and I41) Which ion(s) is/are spectator ions in the formation of a precipitate of AgCl via combining aqueous solutions of CoCl2 and AgNO3? A) Co2+ and NO3B) NO3- and ClC) Co2+ and Ag+ D) ClE) NO342) The balanced net ionic equation for precipitation of CaCO 3 wh ...
Summer Work
... Sixth Exercise: A mixture of 1.16 mole of A, 1.35 mole of B and 0.641 mole of C is placed in a one-liter container at a certain temperature. The reaction was allowed to reach equilibrium. At equilibrium. the number of moles of A is 1.95. Calculate the equilibrium constant, Keq, for the reaction: 2 A ...
... Sixth Exercise: A mixture of 1.16 mole of A, 1.35 mole of B and 0.641 mole of C is placed in a one-liter container at a certain temperature. The reaction was allowed to reach equilibrium. At equilibrium. the number of moles of A is 1.95. Calculate the equilibrium constant, Keq, for the reaction: 2 A ...
Unit 8 Test Review
... Activity Series of Metals – an invaluable aid to predicting the products of replacement reactions. Each element on the list replaces from a compound any of the elements below it. The larger the interval between elements, the more vigorous the reaction. ...
... Activity Series of Metals – an invaluable aid to predicting the products of replacement reactions. Each element on the list replaces from a compound any of the elements below it. The larger the interval between elements, the more vigorous the reaction. ...
Name___________________________________ Physical
... 8) A term that means "without water" is ________________________. 9) How can you drive the water out of a hydrate? By ________________________. _________ _________ 10) Which of the following correctly shows the formula for a hydrate? A) MgSO4 (H2 O)7 B) H2 O C) H2 O2 ...
... 8) A term that means "without water" is ________________________. 9) How can you drive the water out of a hydrate? By ________________________. _________ _________ 10) Which of the following correctly shows the formula for a hydrate? A) MgSO4 (H2 O)7 B) H2 O C) H2 O2 ...
Questions 1-2
... (A) are made up of atoms that are intrinsically hard because of their electronic structures (B) consist of positive and negative ions that are strongly attracted to each other (C) are giant molecules in which each atom forms strong covalent bonds with all of its neighboring atoms (D) are formed unde ...
... (A) are made up of atoms that are intrinsically hard because of their electronic structures (B) consist of positive and negative ions that are strongly attracted to each other (C) are giant molecules in which each atom forms strong covalent bonds with all of its neighboring atoms (D) are formed unde ...
*6th Grade Science-Chapter 5 Study Guide Lesson 5.1: Observing
... Physical change-any change that alters the form or appearance of a substance but does not change it into another substance. Ex: bending, cutting, freezing, and boiling are examples of physical changes. Chemical change-any change that produces one or more new substances. Chemical changes are caused b ...
... Physical change-any change that alters the form or appearance of a substance but does not change it into another substance. Ex: bending, cutting, freezing, and boiling are examples of physical changes. Chemical change-any change that produces one or more new substances. Chemical changes are caused b ...
with answers
... reaction. Give the equation for the reaction, and explain why entropy decreases as the reaction proceeds. Why was it such a great challenge to develop an efficient industrial synthesis of ammonia, for which Carl Bosch obtained the Nobel Prize? N2 + 3 H2 2 NH3 The entropy decreases, as there are fewe ...
... reaction. Give the equation for the reaction, and explain why entropy decreases as the reaction proceeds. Why was it such a great challenge to develop an efficient industrial synthesis of ammonia, for which Carl Bosch obtained the Nobel Prize? N2 + 3 H2 2 NH3 The entropy decreases, as there are fewe ...
+ CuO Cu + O
... 7- Zinc reacts with dilute hydrochloric acid and …………………………… salt is formed. 8- The reaction between acid and alkali gives ………………………. And ………………………. And this reaction is called ……………………………. 9- Clear lime water turbid on passing ……………………………. Gas through it 10- On adding silver nitrate solution to sod ...
... 7- Zinc reacts with dilute hydrochloric acid and …………………………… salt is formed. 8- The reaction between acid and alkali gives ………………………. And ………………………. And this reaction is called ……………………………. 9- Clear lime water turbid on passing ……………………………. Gas through it 10- On adding silver nitrate solution to sod ...
Final Exam Practice Problems Set 2
... matter and energy are really the same thing. it is impossible to know anything with certainty. it is impossible to know both the exact position and momentum of an electron. there can only be one uncertain digit in a reported number. it is impossible to know how many electrons there are in an atom. ...
... matter and energy are really the same thing. it is impossible to know anything with certainty. it is impossible to know both the exact position and momentum of an electron. there can only be one uncertain digit in a reported number. it is impossible to know how many electrons there are in an atom. ...
CHEMICAL REACTION
... such as S8.) • Do not change the subscripts in compounds once the correct formulas are written. ...
... such as S8.) • Do not change the subscripts in compounds once the correct formulas are written. ...
Chapter 8 Thermochemistry: Chemical Energy
... Energy changes are measured from the point of view of the system! ∆E is negative ⇒ energy flows out of the system • ∆E is positive ⇒ energy flows into the system ...
... Energy changes are measured from the point of view of the system! ∆E is negative ⇒ energy flows out of the system • ∆E is positive ⇒ energy flows into the system ...
halogen compounds organic chemistry
... (FeCl3, FeBr3, AlCl3) in the dark, at ordinary temperatures (310-320 K). The Lewis acid acts as a catalyst or a halogen carrier, as its function is to carry the chlorine to the aromatic hydrocarbon. In actual practice, iron filings in the presence of chlorine commonly used. The chlorine reacts with ...
... (FeCl3, FeBr3, AlCl3) in the dark, at ordinary temperatures (310-320 K). The Lewis acid acts as a catalyst or a halogen carrier, as its function is to carry the chlorine to the aromatic hydrocarbon. In actual practice, iron filings in the presence of chlorine commonly used. The chlorine reacts with ...
File
... c. actual yield d. theoretical yield ____29. The amount of product that forms when a reaction is carried out in the laboratory is called a ___________________. a. limiting reagent b. excess reagent c. actual yield d. theoretical yield ____30. In a chemical reaction a. mass is conserved c. moles are ...
... c. actual yield d. theoretical yield ____29. The amount of product that forms when a reaction is carried out in the laboratory is called a ___________________. a. limiting reagent b. excess reagent c. actual yield d. theoretical yield ____30. In a chemical reaction a. mass is conserved c. moles are ...
The Basics - I`m a faculty member, and I need web space. What
... • Now all that is left to balance is the oxygen. There are 2 O on the reactant side and 7 on the product side. Our only source of oxygen is the O2. Any whole number we place in front of the O2 will result in an even number of atoms. The only way to balance the equation is to use a coefficient of 7/2 ...
... • Now all that is left to balance is the oxygen. There are 2 O on the reactant side and 7 on the product side. Our only source of oxygen is the O2. Any whole number we place in front of the O2 will result in an even number of atoms. The only way to balance the equation is to use a coefficient of 7/2 ...
rp oc4
... A reactant or product in aqueous solution (dissolved in water) A reactant or product in the gaseous state ...
... A reactant or product in aqueous solution (dissolved in water) A reactant or product in the gaseous state ...
Bioorthogonal chemistry
The term bioorthogonal chemistry refers to any chemical reaction that can occur inside of living systems without interfering with native biochemical processes. The term was coined by Carolyn R. Bertozzi in 2003. Since its introduction, the concept of the bioorthogonal reaction has enabled the study of biomolecules such as glycans, proteins, and lipids in real time in living systems without cellular toxicity. A number of chemical ligation strategies have been developed that fulfill the requirements of bioorthogonality, including the 1,3-dipolar cycloaddition between azides and cyclooctynes (also termed copper-free click chemistry), between nitrones and cyclooctynes, oxime/hydrazone formation from aldehydes and ketones, the tetrazine ligation, the isocyanide-based click reaction, and most recently, the quadricyclane ligation.The use of bioorthogonal chemistry typically proceeds in two steps. First, a cellular substrate is modified with a bioorthogonal functional group (chemical reporter) and introduced to the cell; substrates include metabolites, enzyme inhibitors, etc. The chemical reporter must not alter the structure of the substrate dramatically to avoid affecting its bioactivity. Secondly, a probe containing the complementary functional group is introduced to react and label the substrate.Although effective bioorthogonal reactions such as copper-free click chemistry have been developed, development of new reactions continues to generate orthogonal methods for labeling to allow multiple methods of labeling to be used in the same biosystems.