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MISSED THIS? Read Section 6.6 (Pages 228-235); Watch KCV 6.6, IWE 6.11. The zinc within a copper-plated penny will dissolve in hydrochloric acid if the copper coating is filed down in several spots (so that the hydrochloric acid can get to the zinc). The reaction between the acid and the zinc is as follows: 2H+ (aq) + Zn(s) → H₂(g) + Zn²+ (aq) When the zinc in a certain penny dissolves, the total volume of gas collected over water at 25°C was 0.951 L at a total pressure of 756 mm Hg mmHg. Vapor pressure of water versus temperature Temperature Pressure Temperature (°C) (mmHg) (°C) 0 5 10 15 20 25 30 35 40 45 50 4.58 6.54 9.21 12.79 17.55 23.78 31.86 42.23 55.40 71.97 92.6 55 60 65 70 75 80 85 90 95 100 Pressure (mmHg) 118.2 149.6 187.5 233.7 289.1 355.1 433.6 525.8 633.9 760.0 What mass of hydrogen gas was collected? Express your answer in grams to three significant figures. m == LIVD ΑΣΦΑ A 13 ? Submit Previous Answers Request Answer Provide Feedback 8 X Incorrect; Try Again; 4 attempts remaining Use the ideal gas law to find the amount of hydrogen gas in moles: PV = nRT where P is the pressure in atm of hydrogen gas, V is the volume in L, n is the number of moles, R is the ideal gas constant, and T is the temperature in K. Recall that, according to Dalton's law, the total pressure of a gas mixture is the sum of the partial pressures of its components. This definition can be used to calculate the partial pressure of hydrogen gas. Then convert the number of moles of hydrogen gas to its mass, using the molar mass (in units of g/mol) as a conversion factor. Next >

MISSED THIS? Read Section 6.6 (Pages 228-235); Watch KCV 6.6, IWE 6.11. The zinc within a copper-plated penny will dissolve in hydrochloric acid if the copper coating is filed down in several spots (so that the hydrochloric acid can get to the zinc). The reaction between the acid and the zinc is as follows: 2H+ (aq) + Zn(s) → H₂(g) + Zn²+ (aq) When the zinc in a certain penny dissolves, the total volume of gas collected over water at 25°C was 0.951 L at a total pressure of 756 mm Hg mmHg. Vapor pressure of water versus temperature Temperature Pressure Temperature (°C) (mmHg) (°C) 0 5 10 15 20 25 30 35 40 45 50 4.58 6.54 9.21 12.79 17.55 23.78 31.86 42.23 55.40 71.97 92.6 55 60 65 70 75 80 85 90 95 100 Pressure (mmHg) 118.2 149.6 187.5 233.7 289.1 355.1 433.6 525.8 633.9 760.0 What mass of hydrogen gas was collected? Express your answer in grams to three significant figures. m == LIVD ΑΣΦΑ A 13 ? Submit Previous Answers Request Answer Provide Feedback 8 X Incorrect; Try Again; 4 attempts remaining Use the ideal gas law to find the amount of hydrogen gas in moles: PV = nRT where P is the pressure in atm of hydrogen gas, V is the volume in L, n is the number of moles, R is the ideal gas constant, and T is the temperature in K. Recall that, according to Dalton's law, the total pressure of a gas mixture is the sum of the partial pressures of its components. This definition can be used to calculate the partial pressure of hydrogen gas. Then convert the number of moles of hydrogen gas to its mass, using the molar mass (in units of g/mol) as a conversion factor. Next >

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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MISSED THIS? Read Section 6.6 (Pages 228 - 235); Watch KCV 6.6, IWE 6.11. The zinc within a copper-plated penny will dissolve in hydrochloric acid if the copper coating is filed down in several spots (so that the hydrochloric acid can get to the zinc). The reaction between the acid and the zinc is as follows: 2H+ I+ (aq) + Zn(s) → H₂(g) + Zn²+ When the zinc in a certain penny dissolves, the total volume of gas collected over water at 25 °C was 0.951 L at a total pressure of 756 mm Hg mmHg. Vapor pressure of water versus temperature Temperature Pressure Temperature Pressure (°C) (mmHg) (°C) (mmHg) 118.2 149.6 187.5 233.7 289.1 355.1 433.6 525.8 633.9 760.0 0 5 10 15 20 25 30 35 40 45 50 2+ (aq) 4.58 6.54 9.21 12.79 17.55 23.78 31.86 42.23 55.40 71.97 92.6 55 60 65 70 75 80 85 90 95 100 What mass of hydrogen gas was collected? Express your answer in grams to three significant figures. m = Submit ΠΑΣΦ Previous Answers Request Answer ? Provide Feedback g X Incorrect; Try Again; 4 attempts remaining Use the ideal gas law to find the amount of hydrogen gas in moles: PV = nRT where P is the pressure in atm of hydrogen gas, V is the volume in L, n is the number of moles, R is the ideal gas constant, and T is the temperature in K. Recall that, according to Dalton's law, the total pressure of a gas mixture is the sum of the partial pressures of its components. This definition can be used to calculate the partial pressure of hydrogen gas. Then convert the number of moles of hydrogen gas to its mass, using the molar mass (in units of g/mol) as a conversion factor. Next >
Transcribed Image Text:MISSED THIS? Read Section 6.6 (Pages 228 - 235); Watch KCV 6.6, IWE 6.11. The zinc within a copper-plated penny will dissolve in hydrochloric acid if the copper coating is filed down in several spots (so that the hydrochloric acid can get to the zinc). The reaction between the acid and the zinc is as follows: 2H+ I+ (aq) + Zn(s) → H₂(g) + Zn²+ When the zinc in a certain penny dissolves, the total volume of gas collected over water at 25 °C was 0.951 L at a total pressure of 756 mm Hg mmHg. Vapor pressure of water versus temperature Temperature Pressure Temperature Pressure (°C) (mmHg) (°C) (mmHg) 118.2 149.6 187.5 233.7 289.1 355.1 433.6 525.8 633.9 760.0 0 5 10 15 20 25 30 35 40 45 50 2+ (aq) 4.58 6.54 9.21 12.79 17.55 23.78 31.86 42.23 55.40 71.97 92.6 55 60 65 70 75 80 85 90 95 100 What mass of hydrogen gas was collected? Express your answer in grams to three significant figures. m = Submit ΠΑΣΦ Previous Answers Request Answer ? Provide Feedback g X Incorrect; Try Again; 4 attempts remaining Use the ideal gas law to find the amount of hydrogen gas in moles: PV = nRT where P is the pressure in atm of hydrogen gas, V is the volume in L, n is the number of moles, R is the ideal gas constant, and T is the temperature in K. Recall that, according to Dalton's law, the total pressure of a gas mixture is the sum of the partial pressures of its components. This definition can be used to calculate the partial pressure of hydrogen gas. Then convert the number of moles of hydrogen gas to its mass, using the molar mass (in units of g/mol) as a conversion factor. Next >
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