Question: When sugar dissolves a chemical reaction occurs. This statement is I. True II. False III....
Question: When sugar dissolves a chemical reaction occurs.
This statement is
I. True
II. False
III. When Sugar dissolves, the sugar molecules break apart to form ions.
IV. when sugar dissolves, dipole-dipole forces are formed between the water and sugar molecules.
a) I and III
b) I and IV
C) II and III
D) II and IV
Homework Answers
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Question: When sugar dissolves a chemical reaction occurs.
This statement is
I. True
II. False
III....
b) [i], [ii], [iii], [iv] b) i) Using colours and a legend, sketch a diagram of...
b) [i], [ii], [iii], [iv]
b) i) Using colours and a legend, sketch a diagram of 4 molecules of ammonia inside a sealed container and another diagram of the same container after the reaction is complete. Reactants Products ii) How many molecules of each product are formed when 4 molecules of ammonia react? iii) What is the simplest ratio of molecules of reactants and products? iv) Relate your answer for question (iii) above, to the balanced chemical equation for the...
1)Which of the following is/are true? I. Force is a scalar quantity. II. Force is a...
1)Which of the following is/are true? I. Force is a scalar quantity. II. Force is a vector quantity. III. A force is a push or a pull between objects that occurs only when the objects are in physical contact. IV. Non-contact forces are also called action-at-a-distance forces. A) I and III only B)II and IV only C)II only D)I only E)II and III only 2)Which of the following is/are true? I. Mass is a vector quantity. II. Mass is a...
Identify the characteristics of ionic electrolytes Question Which of the following occurs when an ionic compound...
Identify the characteristics of ionic electrolytes Question Which of the following occurs when an ionic compound dissolves in a polar solvent such as water? Select all that apply: The water molecules chemically react with the ions. The disorder of the ionic salt is decreased. The water molecules attract both the anions and cations in the ionic salt. The ions become solvated water molecules, which reduces the electrostatic attractions between the ions.
3. Given the chemical information below, determine the structure of the saccharide i. It is a non-reducing sugar, a...
3. Given the chemical information below, determine the structure of the saccharide i. It is a non-reducing sugar, and does not undergo mutarotation. ii. Upon acidic hydrolysis, one mole each of (D)-mannose, (L)-galactose, (D)-xylose, and (D) threitol (the alditol formed from threose) are produced. iii. Upon exhaustive methylation with dimethylsulfate and hydroxide, followed by acidic hydrolysis, 2,4-di-O-methyl-(D)-mannose, 2,3,4,6-tetra-O-methyl-(L)-galactose, 2,3,4-tri-o methyl-(D)-xylose, and 1,2,3-tri-O-methyl-(D)-threitol are formed iv. When all o-glycosidic linkages are enzymatically hydrolyzed, (L)-galactose, (D)-threitol, and a reducing disaccharide are formed...
What statement is TRUE about the mechanism for the reaction shown here? CH(CH2)2CO CH -COẠCH NaOH...
What statement is TRUE about the mechanism for the reaction shown here? CH(CH2)2CO CH -COẠCH NaOH CH3(CH)1200CH excess heat CH(CH3COACH Water attacks the carbonyl carbon to form a tetrahedral intermediate. The first step of the reaction involves protonation of the ester carbonyl oxygen. One of the products formed is glycerol. The hydroxide deprotonates the alpha carbon. Which bases among the following is/are used for irreversible enolate formation of acetaldehyde? NaH NaOMe II LDA III NaNH2 IV NaOH y II and...
Indicate if the given statements are true or flase regarding Hell Volhard Zelinski reaction I. Acids...
Indicate if the given statements are true or flase regarding Hell Volhard Zelinski reaction I. Acids are converted to acid bromides during the reaction. True or False? II. HBr is formed during the course of the mechanism. True or False? III. Using an alcohol in the second step can form α-brominated esters. True or False? IV. PBr3 facilitates the formation of the acid bromide. True or False?
ANSWER ALL 18 Is the statement below true or false? "When a person drinks a liquid...
ANSWER ALL
18 Is the statement below true or false? "When a person drinks a liquid through a straw at sea level, the atmosphere pushes the liquid into their mouth” A true B false 19 Which of these four values are intensive properties? | half-life || Ka value III boiling point I density A only IV B only III and IV Conly II, III, and IV D all of these E only I and IV F none of these 20...
Which of the following statements are true? 1. Glass is mostly silicon dioxide and so when...
Which of the following statements are true? 1. Glass is mostly silicon dioxide and so when a long narrow glass tube is placed into water, the water molecules form adhesive forces with the oxygen atoms in the molecules of the glass 2. The Shape of the meniscus seen when water is poured into a glass container is due to cohesive forms being greater than the adhesive forced being experienced. 3. When a glass tube is placed into a dish of...
Many of the water properties lead to some crucial physical, chemical and biochemical processes that are...
Many of the water properties lead to some crucial physical, chemical and biochemical processes that are closely related to environmental and health problems. Some people state: (I) A relatively high dissolution of O2 in water is due largely to the dipolar property of water molecules. (II) Although the density of water changes only slightly with temperature, its change can cause lake water turnover or stratification. (III) Since water dissociation is so small (H2O ó H+ + OH-, Ka = 1.0...
Please help me with questions 1-7? Thanks! :) CE112-03 Name: January 27, 2016 Spring 2016 Quiz...
Please help me with questions 1-7? Thanks! :)
CE112-03 Name: January 27, 2016 Spring 2016 Quiz 1 Due Date: January 29, 2016 1. Which pair of the following materials has London dispersion forces as the only intermolecular forces? A. Kr, CH4. B. H20, HCI C. NH3. C6H 13NH2 D. AlF3, H3COCH3 E. CH3CI, NaBr 2. When NaCl dissolves in water, aqueous Nat and Cl- ions result, The force of attraction that exists between Nat ions and H20 molecules is called...
b) [i], [ii], [iii], [iv]
b) i) Using colours and a legend, sketch a diagram of 4 molecules of ammonia inside a sealed container and another diagram of the same container after the reaction is complete. Reactants Products ii) How many molecules of each product are formed when 4 molecules of ammonia react? iii) What is the simplest ratio of molecules of reactants and products? iv) Relate your answer for question (iii) above, to the balanced chemical equation for the...
Identify the characteristics of ionic electrolytes Question Which of the following occurs when an ionic compound dissolves in a polar solvent such as water? Select all that apply: The water molecules chemically react with the ions. The disorder of the ionic salt is decreased. The water molecules attract both the anions and cations in the ionic salt. The ions become solvated water molecules, which reduces the electrostatic attractions between the ions.
3. Given the chemical information below, determine the structure of the saccharide i. It is a non-reducing sugar, and does not undergo mutarotation. ii. Upon acidic hydrolysis, one mole each of (D)-mannose, (L)-galactose, (D)-xylose, and (D) threitol (the alditol formed from threose) are produced. iii. Upon exhaustive methylation with dimethylsulfate and hydroxide, followed by acidic hydrolysis, 2,4-di-O-methyl-(D)-mannose, 2,3,4,6-tetra-O-methyl-(L)-galactose, 2,3,4-tri-o methyl-(D)-xylose, and 1,2,3-tri-O-methyl-(D)-threitol are formed iv. When all o-glycosidic linkages are enzymatically hydrolyzed, (L)-galactose, (D)-threitol, and a reducing disaccharide are formed...
What statement is TRUE about the mechanism for the reaction shown here? CH(CH2)2CO CH -COẠCH NaOH CH3(CH)1200CH excess heat CH(CH3COACH Water attacks the carbonyl carbon to form a tetrahedral intermediate. The first step of the reaction involves protonation of the ester carbonyl oxygen. One of the products formed is glycerol. The hydroxide deprotonates the alpha carbon. Which bases among the following is/are used for irreversible enolate formation of acetaldehyde? NaH NaOMe II LDA III NaNH2 IV NaOH y II and...
ANSWER ALL
18 Is the statement below true or false? "When a person drinks a liquid through a straw at sea level, the atmosphere pushes the liquid into their mouth” A true B false 19 Which of these four values are intensive properties? | half-life || Ka value III boiling point I density A only IV B only III and IV Conly II, III, and IV D all of these E only I and IV F none of these 20...
Please help me with questions 1-7? Thanks! :)
CE112-03 Name: January 27, 2016 Spring 2016 Quiz 1 Due Date: January 29, 2016 1. Which pair of the following materials has London dispersion forces as the only intermolecular forces? A. Kr, CH4. B. H20, HCI C. NH3. C6H 13NH2 D. AlF3, H3COCH3 E. CH3CI, NaBr 2. When NaCl dissolves in water, aqueous Nat and Cl- ions result, The force of attraction that exists between Nat ions and H20 molecules is called...
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