Homework Answers
1 ) Oils are hydrophobic in nature because they are generally non polar .non polar dissolves in non polar .oils may be saturated and unsaturated both.
Oil base paint must be hydrophobic
2)this is the reaction of strong base ,if magnesium hydroxide dissolve completely it must be strong base option
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Question 1 (1 point) Oil-based paints are not soluble in water, but they do dissolve in...
Question 31 (1 point) Electrolysis is the process of using electrical energy to break a compound...
Question 31 (1 point) Electrolysis is the process of using electrical energy to break a compound apart and occur in the voltic cell. True False Question 32 (1 point) Soap has an ionic and a polar end. It works well to remove oil by surrounding the oil with the nonpolar end, and the water interacts with the polar end. True False Question 29 (1 point) Salts that contain the cation of a strong base and an anion that is the...
0/1 point Question 3 Which calculated titration curve only has 3 distinc strong acid/strong base reaction...
0/1 point Question 3 Which calculated titration curve only has 3 distinc strong acid/strong base reaction weak acid/strong base reaction strong acid/weak base reaction weak base/strong acid reaction 0/1 point Question 4 When a weak acid is titrated with a strong base. there are a total of 3 distinct regions of the titration curve that can be calculated the pH is high little titrant is present, but decreases as more of it is added. at no point during the titration,...
Question 3 1 pts Which statement accurately describes what happens in a buffer solution when you...
Question 3 1 pts Which statement accurately describes what happens in a buffer solution when you add strong acid or strong base? The strong species is converted to weak species by reaction The pH change is smaller than you expect based on the amount of acid or base added Two reactions occurs-first a completion reaction, then an equilibrium reaction All three statements above accurately describe this situation Question 4 Can you create a buffer by mixing HNO3 with KOH? Yes-...
QUESTION 1 Which of the following solutions is a buffer? A mixture of HF and HBr A...
QUESTION 1 Which of the following solutions is a buffer? A mixture of HF and HBr A mixture of H2SO4 and Na2SO4 A mixture of NaI and HI A mixture of NaF and HF 1 points QUESTION 2 What is the [A-]/[HA] ratio in a buffer made of HA and its conjugate base, A-, and has a pH of 8.00 ? The pKa of HA is 6.00 1:1 1:10 1:100 10:1 100:1 1 points QUESTION 3 If the molar...
Question 1 20 pts 1. a type of oil that is rich in monounsaturated fatty acids...
Question 1 20 pts 1. a type of oil that is rich in monounsaturated fatty acids olive 2. a type of nut that is rich in omega-3 fatty acids (ALA) walnuts 3. a lipid that contains glycerol, two fatty acids, and a phosphate group phospholipid 4. a dietary lipid found only in animal foods cholesterol 5. organ in the body that produces all the cholesterol a body needs liver 6. type of lipid with a multi-ring structure sterol 7. a...
30 Chapter 4 Water SELF-TEST Do You Know the Terms? ACROSS Describes a solution with a...
30 Chapter 4 Water SELF-TEST Do You Know the Terms? ACROSS Describes a solution with a IH jor Hydro molecules can form energetically favorable interactions with 6. Water is often referred to as the because of its ability to hydrate molecules and screen Describes the concentration (and therefore of OH in an aqueous 8. The ion product of water, it is 1 x M in aqueous solutions at 25 C. 9, The describes the relationship between pH and the pk.of...
15) Determine the molar solubility of FeCl, in pure water. K A) 0.228 M B ) 0.0301 M C) 0.311 M for FeCl, -2.45 x 1...
15) Determine the molar solubility of FeCl, in pure water. K A) 0.228 M B ) 0.0301 M C) 0.311 M for FeCl, -2.45 x 10 D ) 0.174 M 15 E) 2.45 * 10M 16) 16) Which of the following statements is true? A) Kris related to the formation of complexes B) K is related to acid dissociation C) K, is related to the solubility of a solid ionic species D) Khis related to base dissociation E) K is...
please help me answer question 1 to 3, thank you Chapter 9, Solutions, Review & Extra Credit. 2 Points for each XC c...
please help me answer question 1 to 3,
thank you
Chapter 9, Solutions, Review & Extra Credit. 2 Points for each XC correct answer; 6 points total, max. Partial Credit given. Suggestions...work in teams [it will improve the learning experience] 1. Solutions-A solution forms when a solute (the smaller quantity) dissolves in a solvent (the larger quantity). In a solution, the particles of solute are evenly distributed in the solvent. A solute may be a gas, liquid or solid. A...
help asap please Question 8 (1 point) For the decomposition of mercury(II) oxide, Hgo, to mercury...
help asap please
Question 8 (1 point) For the decomposition of mercury(II) oxide, Hgo, to mercury and oxygen: 2HgO(s) → 2Hg() + O2(g) What is the standard change in entropy for this reaction? Sº / J-mol-4K-1 HgO(s) 70.29 Hg(1) 76.02 O2(g) 205.14 351.45 J-K-1 58.83 J-K-1 O 216.60 JK-1 210.87 J-K-1 Question 7 (1 point) Which process would be predicted to have AS < 0? O a solid melting O a solution being made a solid compound decomposing to evolve...
Question 22 (1 point) The K, of hypochlorous acid (HCIO) is 3.0 * 10-at 25.0 "C....
Question 22 (1 point) The K, of hypochlorous acid (HCIO) is 3.0 * 10-at 25.0 "C. Calculate the pH of a 0.0385 M hypochlorous acid solution (pH of a weak acid - with approximation, [H,0") Sort (K, Cal; where CHA is weak acid concentration) A) 9.53 B) 3.05 C) 6.52 D-3.05 E) 4.47 Question 23 (1 point) A particular first-order reaction has a rate constant of 1.35 "C. What is the magnitude of kat 75.0 "CIT 105 at 25.0 (Use...
Question 31 (1 point) Electrolysis is the process of using electrical energy to break a compound apart and occur in the voltic cell. True False Question 32 (1 point) Soap has an ionic and a polar end. It works well to remove oil by surrounding the oil with the nonpolar end, and the water interacts with the polar end. True False Question 29 (1 point) Salts that contain the cation of a strong base and an anion that is the...
0/1 point Question 3 Which calculated titration curve only has 3 distinc strong acid/strong base reaction weak acid/strong base reaction strong acid/weak base reaction weak base/strong acid reaction 0/1 point Question 4 When a weak acid is titrated with a strong base. there are a total of 3 distinct regions of the titration curve that can be calculated the pH is high little titrant is present, but decreases as more of it is added. at no point during the titration,...
Question 3 1 pts Which statement accurately describes what happens in a buffer solution when you add strong acid or strong base? The strong species is converted to weak species by reaction The pH change is smaller than you expect based on the amount of acid or base added Two reactions occurs-first a completion reaction, then an equilibrium reaction All three statements above accurately describe this situation Question 4 Can you create a buffer by mixing HNO3 with KOH? Yes-...
Question 1 20 pts 1. a type of oil that is rich in monounsaturated fatty acids olive 2. a type of nut that is rich in omega-3 fatty acids (ALA) walnuts 3. a lipid that contains glycerol, two fatty acids, and a phosphate group phospholipid 4. a dietary lipid found only in animal foods cholesterol 5. organ in the body that produces all the cholesterol a body needs liver 6. type of lipid with a multi-ring structure sterol 7. a...
30 Chapter 4 Water SELF-TEST Do You Know the Terms? ACROSS Describes a solution with a IH jor Hydro molecules can form energetically favorable interactions with 6. Water is often referred to as the because of its ability to hydrate molecules and screen Describes the concentration (and therefore of OH in an aqueous 8. The ion product of water, it is 1 x M in aqueous solutions at 25 C. 9, The describes the relationship between pH and the pk.of...
15) Determine the molar solubility of FeCl, in pure water. K A) 0.228 M B ) 0.0301 M C) 0.311 M for FeCl, -2.45 x 10 D ) 0.174 M 15 E) 2.45 * 10M 16) 16) Which of the following statements is true? A) Kris related to the formation of complexes B) K is related to acid dissociation C) K, is related to the solubility of a solid ionic species D) Khis related to base dissociation E) K is...
please help me answer question 1 to 3,
thank you
Chapter 9, Solutions, Review & Extra Credit. 2 Points for each XC correct answer; 6 points total, max. Partial Credit given. Suggestions...work in teams [it will improve the learning experience] 1. Solutions-A solution forms when a solute (the smaller quantity) dissolves in a solvent (the larger quantity). In a solution, the particles of solute are evenly distributed in the solvent. A solute may be a gas, liquid or solid. A...
help asap please
Question 8 (1 point) For the decomposition of mercury(II) oxide, Hgo, to mercury and oxygen: 2HgO(s) → 2Hg() + O2(g) What is the standard change in entropy for this reaction? Sº / J-mol-4K-1 HgO(s) 70.29 Hg(1) 76.02 O2(g) 205.14 351.45 J-K-1 58.83 J-K-1 O 216.60 JK-1 210.87 J-K-1 Question 7 (1 point) Which process would be predicted to have AS < 0? O a solid melting O a solution being made a solid compound decomposing to evolve...
Question 22 (1 point) The K, of hypochlorous acid (HCIO) is 3.0 * 10-at 25.0 "C. Calculate the pH of a 0.0385 M hypochlorous acid solution (pH of a weak acid - with approximation, [H,0") Sort (K, Cal; where CHA is weak acid concentration) A) 9.53 B) 3.05 C) 6.52 D-3.05 E) 4.47 Question 23 (1 point) A particular first-order reaction has a rate constant of 1.35 "C. What is the magnitude of kat 75.0 "CIT 105 at 25.0 (Use...
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