When air (21 mol% O2, 79 mol% N2) is placed in contact with 1000 cm3 of...
When air (21 mol% O2, 79 mol% N2) is placed in contact with 1000 cm3 of liquid water at body temperature, 37°C, and 1 atm absolute, approximately 14.1 standard cubic centimeters [cm3(STP)] of gas are absorbed in the water at equilibrium. Subsequent analysis of the liquid reveals that 33.4 mol% of the dissolved gas is oxygen and the balance is oxygen
a) Estimate the Henry’s law coefficients (atm/mole fraction) of oxygen and nitrogen at 37°C
b) An adult absorbs approximately 0.4g O2/min in the blood flowing through the lungs. Assuming that blood behaves like water and that it enters the lungs free of oxygen, estimate the flow rate of blood into the lungs in L/min. (answer: 59 L blood/min)
Homework Answers
a) Henry's law is P = KH X
KH = P/X
For oxygen KH = P/X = 1/ 21 = 0.0476 atm/mol
For nitrogen KH = P/X = 1/79 = 0.01266 atm/mol
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When air (21 mol% O2, 79 mol% N2) is placed in contact with 1000
cm3 of...
When air (=21 mole% O2, 79 mole% N2) is placed in contact with 1000 cm3 of...
When air (=21 mole% O2, 79 mole% N2) is placed in contact with 1000 cm3 of liquid water at body temperature, 36.9C, and 1 atm absolute, approximately 14.1 standard cubic centimeters [cm3(STP)] of gas are absorbed in the water at equilibrium. Subsequent analysis of the liquid reveals that 33.4 mole% of the dissolved gas is oxygen and the balanceis nitrogen. (a) Estimate the Henry's law coefficients (atm/mole fraction) of oxygen and nitrogen at 36.9C. (b) An adult absorbs approximately 0.4...
please do answer question 1(a) and (b) with proper steps and calculations. Normal air contains 78 % N2, 20.9 % O2, 0...
please do answer question 1(a) and (b) with proper steps and
calculations.
Normal air contains 78 % N2, 20.9 % O2, 0.03 % CO2 and 1.07 % H2 by weight. Determine the molar volume, molar mass and density (g cm3) of dry air at STP. Repeat the calculations for air saturated with water vapour at 25 °C and 1 atm. Assume ideal behaviour. (Vapour pressure of H20O at 25 °C- 23.756 mm Hg) (a) (10 marks) (b) The compressibility factor,...
17. Determine the enthalpy change for the oxidation of ethanol to acetic acid, CH3CH2OH(() + O2(g)...
17. Determine the enthalpy change for the oxidation of ethanol to acetic acid, CH3CH2OH(() + O2(g) → CH3COOH() + H2O(1) given the thermochemical equations below. 1) 2 CH2CH2OH(1) + O2(g) + 2 CH CHO(l) + 2 H20(1) AH = -400.8 kJ/mol-rxn 2) 2 CHỊCHO(0)+0g)+2 CHCOOH(C). A,Hº = -584.4 kJ/mol-rxn (a) What is the compound that is not present in the target equation? (b) To cross out that compound, what operation is needed to do for equations 1) and 2)? (c)...
A major component of gasoline is octane (C8H18) . When liquid octane is burned in air it reacts with oxygen (O2) gas to produce carbon dioxide gas and water vapor. Calculate the moles of carbon dioxide produced by the reaction of 1.40 mol of octane. Be su
A major component of gasoline is octane (C8H18) . When liquid octane is burned in air it reacts with oxygen (O2) gas to produce carbon dioxide gas and water vapor. Calculate the moles of carbon dioxide produced by the reaction of 1.40 mol of octane. Be sure your answer has a unit symbol, if necessary, and round it to 3 significant digits.
(1). Which of the following molecules is most soluble in hexane, C6H14? NH3 CH3NH2 CH3OH CH3CH3...
(1). Which of the following molecules is most soluble in hexane, C6H14? NH3 CH3NH2 CH3OH CH3CH3 H2O (2). Which of the following molecules is most soluble in methanol CH3OH? N(CH3)3 CH3NH2 CH3COCH3 CH3CH2CH2CH2CH2CH3 HOCH2CH2OH (3). Calculate the concentration of CO2 in a soft drink that is bottled with a partial pressure of CO2 of 5 atm over the liquid at 25 °C. The Henry’s Law constant for CO2 in water at this temperature is 3.12 ´ 10–2 mol L–1 atm–1....
A chemistry teacher needs to make 2.30 L of a potassium chloride solution for an experimen...
A chemistry teacher needs to make 2.30 L of a potassium chloride solution for an experimen The concentration of the required solution is 3.10 M. How many grams of KCI will she need to use? 0 7.13 g KCI 0 231 g KCI O 532 g KCI 0.0956 g KCI What is the equation for the ion product constant of water at 25 °C? Kw [H,0+][OH-] [H,O] = 1.00 x 10-14 Kw [H,0+1 [OH-] = 1.00 x 10-14 Kw =...
DATE: NURS 208A NAME: 1. The function of ribosomes is to: 6. Inb Digest foreign bacteria...
DATE: NURS 208A NAME: 1. The function of ribosomes is to: 6. Inb Digest foreign bacteria and toxic substances Produces energy from glucose y Aid in cell division Synthesize proteins Which of the following statement is false about the cell membrane? 2. Cell membrane is composed of phospholipid layer The cell membrane prefers large molecules to pass through freely Cell membrane is a semipermeable boundary which determines what can enter and ex the cell The exterior surface is hydrophilic phosphate...
All of the following questions are in relation to the following journal article which is available...
All of the following questions are in relation to the following journal article which is available on Moodle: Parr CL, Magnus MC, Karlstad O, Holvik K, Lund-Blix NA, Jaugen M, et al. Vitamin A and D intake in pregnancy, infant supplementation and asthma development: the Norwegian Mother and Child Cohort. Am J Clin Nutr 2018:107:789-798 QUESTIONS: 1. State one hypothesis the author's proposed in the manuscript. 2. There is previous research that shows that adequate Vitamin A intake is required...
please do answer question 1(a) and (b) with proper steps and
calculations.
Normal air contains 78 % N2, 20.9 % O2, 0.03 % CO2 and 1.07 % H2 by weight. Determine the molar volume, molar mass and density (g cm3) of dry air at STP. Repeat the calculations for air saturated with water vapour at 25 °C and 1 atm. Assume ideal behaviour. (Vapour pressure of H20O at 25 °C- 23.756 mm Hg) (a) (10 marks) (b) The compressibility factor,...
17. Determine the enthalpy change for the oxidation of ethanol to acetic acid, CH3CH2OH(() + O2(g) → CH3COOH() + H2O(1) given the thermochemical equations below. 1) 2 CH2CH2OH(1) + O2(g) + 2 CH CHO(l) + 2 H20(1) AH = -400.8 kJ/mol-rxn 2) 2 CHỊCHO(0)+0g)+2 CHCOOH(C). A,Hº = -584.4 kJ/mol-rxn (a) What is the compound that is not present in the target equation? (b) To cross out that compound, what operation is needed to do for equations 1) and 2)? (c)...
A chemistry teacher needs to make 2.30 L of a potassium chloride solution for an experimen The concentration of the required solution is 3.10 M. How many grams of KCI will she need to use? 0 7.13 g KCI 0 231 g KCI O 532 g KCI 0.0956 g KCI What is the equation for the ion product constant of water at 25 °C? Kw [H,0+][OH-] [H,O] = 1.00 x 10-14 Kw [H,0+1 [OH-] = 1.00 x 10-14 Kw =...
DATE: NURS 208A NAME: 1. The function of ribosomes is to: 6. Inb Digest foreign bacteria and toxic substances Produces energy from glucose y Aid in cell division Synthesize proteins Which of the following statement is false about the cell membrane? 2. Cell membrane is composed of phospholipid layer The cell membrane prefers large molecules to pass through freely Cell membrane is a semipermeable boundary which determines what can enter and ex the cell The exterior surface is hydrophilic phosphate...
All of the following questions are in relation to the following journal article which is available on Moodle: Parr CL, Magnus MC, Karlstad O, Holvik K, Lund-Blix NA, Jaugen M, et al. Vitamin A and D intake in pregnancy, infant supplementation and asthma development: the Norwegian Mother and Child Cohort. Am J Clin Nutr 2018:107:789-798 QUESTIONS: 1. State one hypothesis the author's proposed in the manuscript. 2. There is previous research that shows that adequate Vitamin A intake is required...
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