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1.1 The density of a gas was measured at 1 50 atm and 27 degree celsuis and found to be 1 95 g/L. Calculate the molar mass of the gas.
1.2 Draw and name three structural isomers of octane (C8H18)
1.3 State Markonikov's rule
1.4 The base Ca(OH)2 is almost insoluble in water , only o 25 g can be dissolved in 0.5 L of water at 25 degree celsuis. If the dissolved substance is completely dissociated into constuent ions , what is the pH of the solution?
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- 6. Using the Berthelot equation, find the pressure of 3 mols of methyl chloride at 25oC and 10 liters. : Pc = 65.8 atm, Tc = 416. 2 KRoom temperature: 294.0 K Barometric pressure: 770.5 mmHg Vapor of water: 18.6 mmHg Volume of O2 collected: 57.90 mL Density of H2O2: 1.01 g/mL % Composition H2O2: 3.02 % Volume of H2O2 used: 5.00 mL Letter of the unknown solution of H2O2: B Volume of O2 collected for the unknown: 20.20 mL corrected barometric pressure. 752 mmHg Expert, what is a term letter?The human microbiome is one of the major frontiers of current scientific investigation. Increasing the diversity within your "gut" can be achieved by consuming probiotics from fermented foods and beverages such as sauerkraut and kefir. Kombucha is a tea co-culture of bacteria and yeast (called a SCOBY) and ethanol is one of the products of this fermentation. Lindsey regularly drank kombucha for its perceived health benefits but was concerned about her blood alcohol level. When drinking kombucha, Lindsey's maximum blood alcohol concentration (BAC) reached 0.9 mg/100mL of blood. Given that the initial half-life for ethanol in the body is 40 minutes, what will be Lindsey's BAC after one hour (60 minutes)?
- What is the concentration of O2 in freshwater? Air temperature= 295.65 K. Air pressure = 1 bar(about = to 1atm). Henry's constant, from the table= 1.3 x 10-3 mol/ (kg x bar). PO2 can be calculated from the fact that oxygen is .21 mole fraction of air. Hint- The partial pressure of a gas in a mix of gasses is found by multiplying the total pressure by the mole fraction of that gas. Find the concentration in g/kg from the answer you just got.Ammonia (considered to be ideal gas, 1 mole) initially at 25 oC and 1 bar pressure is heated at constant pressure until the volume has tripled.Use CP = 25.895 + 32.999 x 10^– 3 T – 30.46 x 10^– 7 T2 , J/mole-KCalculate: c) delta H d) delta U e) delta S show complete solution3. What is the mole fraction of an isopropyl alcohol(C2H7OH) alcohol made by 70% by mass? a.) What is the mole fraction of water?
- Solve the set of problems shown below with reference to the following information about ethanol. Ethanol (C2H5OH): molar mass = 46.069 g/mol. Density of absolute (100 % v/v) ethanol = 0.7893 g/mL. During a romantic candlelight dinner a 70 kg person drinks a bottle (750 mL) of Leeuwin Estate Art Series Chardonnay in the space of 3 hours (assume the individual starts drinking wine from the start of the dinner). Ethanol is metabolised at a constant rate of 120 mg per hour per kg body weight, regardless of its concentration. What is their blood alcohol content (mg/100 mL blood) at the end of the dinner? How long will it take for their blood alcohol level to fall to the legal limit (0.05 %)?Room temperature: 294.0 K Barometric pressure: 770.5 mmHg Vapor of water: 18.6 mmHg Volume of O2 collected: 57.90 mL Density of H2O2: 1.01 g/mL % Composition H2O2: 3.02 % Volume of H2O2 used: 5.00 mL Letter of the unknown solution of H2O2: B Volume of O2 collected for the unknown: 20.20 mL Calculate the corrected barometric pressure. 752 mmHg I think the o2 pressure is 733.4 Calculate the volume of O2 at STP in mLCalculate the mass of dissolved nitrogen at 25°C in an aquarium containing 77.2 L of water. Assume the total pressure is 101.8 kPa and the mole fraction of nitrogen in air is 0.78. It is recalled that the partial pressure of a gas in a gas mixture can be determined from the total pressure and its mole fraction (Dalton's Law).Give an answer with 2 decimal places.
- At an air-water interface, fatty acids such as oleic acid liein a one-molecule-thick layer (monolayer), with the heads in thewater and the tails perpendicular in the air. When 2.50 mg of oleic acid is placed on a water surface, it forms a circular mono-layer 38.6 cm in diameter. Find the surface area (in cm²) occu-pied by one molecule (of oleic acid M=283 g/mol).Solve the set of problems shown below with reference to the following information about ethanol. Ethanol (C2H5OH): molar mass = 46.069 g/mol. Density of absolute (100 % v/v) ethanol = 0.7893 g/mL During a romantic candlelight dinner a 70 kg person drinks a bottle (750 mL) of Leeuwin Estate Art Series Chardonnay (13.5 v/v%) in the space of 3 hours (assume the individual starts drinking wine from the start of the dinner). Ethanol is metabolised at a constant rate of 120 mg per hour per kg body weight, regardless of its concentration. What is their blood alcohol content (mg/100 mL blood) at the end of the dinner? How long will it take for their blood alcohol level to fall to the legal limit (0.05 %)?50g of nitrogen (N2) has a volume of ___ liters at STP. Show the complete solution a. V=49.0L b. V=40.0L c. V=44.9L d. V=47.70L