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Use the formula for pH to explain the inverse relationship between pH and hydronium concentration. (That...
Study Guide Questions 1. Explain the relationship between the kinetic energy of molecules or atoms in...
Study Guide Questions 1. Explain the relationship between the kinetic energy of molecules or atoms in a system, and temperature, 2. Explain what it means when someone says, "Water is a polar molecule." (Bet you hear that all the time!) 3. What are hydrogen bonds? 4. Why is it difficult to heat up (or cool down) water? 5. Why is water such a good solvent? Are there any substances water cannot dissolve? Why or why not? 6. What is surface...
Question 21 8 pts A solution has a OH-concentration [OH-] = 2.5 x 10-4 M. a....
Question 21 8 pts A solution has a OH-concentration [OH-] = 2.5 x 10-4 M. a. Calculate the hydronium ion [H3O+] concentration in molarity. (Show all your work !!!!!) b. Calculate the pH and tell whether the solution is acidic or basic. (Show all your work !!!!!) 12pt v Paragraph v BI U A Av Tev : Question 20 6 pts Given the following chemical reaction, determine how many moles of HNO3 are reacted to make 22.7 g of H20....
3. Unpolluted rain has an approximate pH of 5.5. Natural emissions (from volcanoes and lightning), and...
3. Unpolluted rain has an approximate pH of 5.5. Natural emissions (from volcanoes and lightning), and human activity (from mining and industrial plants) emit compounds that mix with water vapor in the atmosphere to create "acid rain," which can have a pH-4.5. Referring to the pH equation, explain why decreasing pH numbers mean that the acidity is increasing. a. Referring to the pH equation, explain why more acidic solutions have lower pH values. b. Referring to the pH equation, explain...
. fect Journal Describe the relationship between substrate concentration and the initial reaction rate of an...
.
fect Journal Describe the relationship between substrate concentration and the initial reaction rate of an enzyme-catalyzed reaction. Is this a linear relationship? What happens to the initial reaction rate as substrate concentration increases? Question 1 of 6 ect Journal Explain why the maximum initial reaction rate cannot be reached at low lactose concentrations Question 3 of 6 HET ournal Enzymes function most efficiently at the temperature of a typical cell, which is 37 degrees Celsius. Increases or decreases in...
Topie 1 Review question an concentrations of salutions (preparation, dilution, and se of the solution). For...
Topie 1 Review question an concentrations of salutions (preparation, dilution, and se of the solution). For exam ple What is the molar concentration of calcium hydroxide in a salution prepared by dissalving 0.2478 grams of calcium hydroxide in cnongh water to make 40.00 mL of salution? -If the solution above is diluted to 100.00 mL, what is the molarity of calcinm hydroxide in the new salution? -Eanus: what is the pH of the oniginal solution and the diluted solution? Note:...
pls answer all ?? CHAPTER 3 WATER AND THE FITNESS OF THE ENVIRONMENT Learning objectives The...
pls
answer all ??
CHAPTER 3 WATER AND THE FITNESS OF THE ENVIRONMENT Learning objectives The Properties of Water 1. With the use of a diagram or diagrams, explain why water molecules are: a. polar b. capable of hydrogen bonding with 4 neighboring water molecules 2. List four characteristics of water and explain why they result from hydrogen bonding, 3. Define cohesion and adhesion. Explain how water's cohesion and adhesion contribute to the movement of water from the roots to...
1. An equilibrium mixture of CH.COH and CHCO,has a pH of 4.8. The equino equation is...
1. An equilibrium mixture of CH.COH and CHCO,has a pH of 4.8. The equino equation is given below: CH3CO.H (aq) + H20 (1) = CH,CO2 (aq) + HO* (aq) Answer the following questions when the pH of the solution is adjusted to 2.8. 4. What happens to the concentration of H3O+ (aq) when pH changes from 4.8 to 2.87 b. In which direction does the equilibrium shift in the equation? c. What happens to the concentration of CH,CO2H (aq) when...
3. i). Write the formula of four strong acids and four strong bases. ii). List four...
3. i). Write the formula of four strong acids and four strong bases. ii). List four factors that affect the strength of an acid. iii). Predict the relative strength of the following compounds: H2O, H2S and H2Se. iv). Which of the following is the stronger acids: CHCICOOH or CHCI-COOH? Explain. v). Al 3* is not a Bronsted acid, Al(H2O)" is. Explain. vi). All Bronsted acids are Lewis acids, but the reverse is not true. Give two examples of two Lewis...
at must be the equilibrium concentration of Question 1 (5 pts). A. If the equilibrium concentration...
at must be the equilibrium concentration of Question 1 (5 pts). A. If the equilibrium concentration of Ce is 0.00010 M, what must be the oqu Cod in the solution? K (Ce (CO)) -59% 10%. (Answer: 3.9 x 10M] B. If the concentration of Ca?" of the solution in 1A is in will some CaCO, begin to precipitate? K (Caco) -1.3 x 10". (Hint: What is the the association of Caland Co, at these concentrations and how does that compare...
Virtual Lab # 3 Concentration Name: Section Number: Date of Submission: Instructions: Please launch the simulation...
Virtual Lab # 3 Concentration Name: Section Number: Date of Submission: Instructions: Please launch the simulation in the link below to help you answer the following questions. Link: https://phet.colorado.edu/sims/html/concentration/latest/concentration en.html Part 1: Concentration Calculations Using Molarity Formula - Procedure: For Trial 1: Fill up the tank to I L, choose Solute: Drink Mix(solid), drag purple concentration meter into the tank as shown: 2. Shake the shaker to add solute to the water until you have an approx. concentration- 2 mol/L....
Study Guide Questions 1. Explain the relationship between the kinetic energy of molecules or atoms in a system, and temperature, 2. Explain what it means when someone says, "Water is a polar molecule." (Bet you hear that all the time!) 3. What are hydrogen bonds? 4. Why is it difficult to heat up (or cool down) water? 5. Why is water such a good solvent? Are there any substances water cannot dissolve? Why or why not? 6. What is surface...
Question 21 8 pts A solution has a OH-concentration [OH-] = 2.5 x 10-4 M. a. Calculate the hydronium ion [H3O+] concentration in molarity. (Show all your work !!!!!) b. Calculate the pH and tell whether the solution is acidic or basic. (Show all your work !!!!!) 12pt v Paragraph v BI U A Av Tev : Question 20 6 pts Given the following chemical reaction, determine how many moles of HNO3 are reacted to make 22.7 g of H20....
3. Unpolluted rain has an approximate pH of 5.5. Natural emissions (from volcanoes and lightning), and human activity (from mining and industrial plants) emit compounds that mix with water vapor in the atmosphere to create "acid rain," which can have a pH-4.5. Referring to the pH equation, explain why decreasing pH numbers mean that the acidity is increasing. a. Referring to the pH equation, explain why more acidic solutions have lower pH values. b. Referring to the pH equation, explain...
.
fect Journal Describe the relationship between substrate concentration and the initial reaction rate of an enzyme-catalyzed reaction. Is this a linear relationship? What happens to the initial reaction rate as substrate concentration increases? Question 1 of 6 ect Journal Explain why the maximum initial reaction rate cannot be reached at low lactose concentrations Question 3 of 6 HET ournal Enzymes function most efficiently at the temperature of a typical cell, which is 37 degrees Celsius. Increases or decreases in...
Topie 1 Review question an concentrations of salutions (preparation, dilution, and se of the solution). For exam ple What is the molar concentration of calcium hydroxide in a salution prepared by dissalving 0.2478 grams of calcium hydroxide in cnongh water to make 40.00 mL of salution? -If the solution above is diluted to 100.00 mL, what is the molarity of calcinm hydroxide in the new salution? -Eanus: what is the pH of the oniginal solution and the diluted solution? Note:...
pls
answer all ??
CHAPTER 3 WATER AND THE FITNESS OF THE ENVIRONMENT Learning objectives The Properties of Water 1. With the use of a diagram or diagrams, explain why water molecules are: a. polar b. capable of hydrogen bonding with 4 neighboring water molecules 2. List four characteristics of water and explain why they result from hydrogen bonding, 3. Define cohesion and adhesion. Explain how water's cohesion and adhesion contribute to the movement of water from the roots to...
1. An equilibrium mixture of CH.COH and CHCO,has a pH of 4.8. The equino equation is given below: CH3CO.H (aq) + H20 (1) = CH,CO2 (aq) + HO* (aq) Answer the following questions when the pH of the solution is adjusted to 2.8. 4. What happens to the concentration of H3O+ (aq) when pH changes from 4.8 to 2.87 b. In which direction does the equilibrium shift in the equation? c. What happens to the concentration of CH,CO2H (aq) when...
3. i). Write the formula of four strong acids and four strong bases. ii). List four factors that affect the strength of an acid. iii). Predict the relative strength of the following compounds: H2O, H2S and H2Se. iv). Which of the following is the stronger acids: CHCICOOH or CHCI-COOH? Explain. v). Al 3* is not a Bronsted acid, Al(H2O)" is. Explain. vi). All Bronsted acids are Lewis acids, but the reverse is not true. Give two examples of two Lewis...
at must be the equilibrium concentration of Question 1 (5 pts). A. If the equilibrium concentration of Ce is 0.00010 M, what must be the oqu Cod in the solution? K (Ce (CO)) -59% 10%. (Answer: 3.9 x 10M] B. If the concentration of Ca?" of the solution in 1A is in will some CaCO, begin to precipitate? K (Caco) -1.3 x 10". (Hint: What is the the association of Caland Co, at these concentrations and how does that compare...
Virtual Lab # 3 Concentration Name: Section Number: Date of Submission: Instructions: Please launch the simulation in the link below to help you answer the following questions. Link: https://phet.colorado.edu/sims/html/concentration/latest/concentration en.html Part 1: Concentration Calculations Using Molarity Formula - Procedure: For Trial 1: Fill up the tank to I L, choose Solute: Drink Mix(solid), drag purple concentration meter into the tank as shown: 2. Shake the shaker to add solute to the water until you have an approx. concentration- 2 mol/L....
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