On a certain winter day in Utah, the average atmospheric pressure is 738 torr. What is the molar density (in mol/L) of...
On a certain winter day in Utah, the average atmospheric pressure is 656 torr. What is the molar density (in mol/L) of the air if the temperature is −29 ° C?
On a hot summer day, the density of air at atmospheric pressure at 32.5°C is 1.1242 kg/m3. (a) What is the number of moles contained in 1.00 m3 of an ideal gas at this temperature and pressure? mol (b) Avogadro's number of air molecules has a mass of 2.86 x 10-2 kg. What is the mass of 1.00 m3 of air? (Assume air is an ideal gas.) kg (c) Does the value calculated in part (b) agree with the stated...
6. Molar Density of Gases A. what is the density of Ne at 100 Celsius and 2.5 atm? B. what is the density of carbon dioxide at 25 Celsius and 1.0 atm? C. What is the molar mass of a gas with a density of 3.93 g/L at 250 K and 1 atm? 7. Application of Gas Laws: A. Calculate the molar mass of a gas if 0.152 g of the gas occupies 0.500 L at STP B. On a...
Entropy of naphthalene: Consider naphthalene C10H8 at atmospheric pressure. It is a solid with a melting point at 80.1 degrees Celsius and a boiling point at 218 degrees Celsius. The latent heat of fusion is 19,123 kJ / mol. The molar heat at constant pressure of solid naphthalene has a functional temperature dependence (in K) which is linear. Its value is 0 at T = 0 K and 188.41 J / mol-K at T = 317.15 K. The molar heat...
On a certain hot day the atmospheric pressure was 1 atm and the temperature was 37oC. On this day 1 L sample of atmospheric gases was collected and analyzed. It was found to contain among other gases 9.38 x 10-3 mol of O2 gas, 2.46 x 10-8 mol of H2 gas and 1.79 x 10-4 mol of water vapor. If you put these amounts of the three gases in a sealed 1L tank at 1 atm and 37oC, will the...
Question 41 ptsSkip to question text. At constant pressure, density of gas is inversely proportional to its temperature. This is how hot air balloon is floating in air: burning fuel makes inside air temperature higher and density lower; low density air balloon float on high density regular air. What is the density of air in g/L at 76 degree C if the atmospheric pressure is 1.0 atm? The average molar mass of air is about 29 g/mol. Keep two decimal...
What is the density (in g/L) of a gas with a molar mass of 122.7 g/mol at a pressure of 2.07 atm and a temperature of 52.39 °C?
On a hot summer day, the density of air at atmospheric pressure at 32.5°C is 1.2074 kg/m3. (a) What is the number of moles contained in 1.00 m3 of an ideal gas at this temperature and pressure? 35.0146 Your response differs from the correct answer by more than 10%. Double check your calculations, mol (b) Avogadro's number of air molecules has a mass of 2.86 x 10-2 kg. What is the mass of 1.00 m3 of air? (Assume air is...
The air in a hot-air balloon at 775 torr is heated from 23.0°C to 25.0°C. Assuming that the moles of air and the pressure remains constant, what is the density of the air at each temperature? (The average molar mass of air is 29.0 g/mol) Density at 23.0°C _____ g/L density at 25.0°C _____ g/L
The atmospheric pressure at the summit of Mt. Everest (8,848 m) is about 250 torr. At which temperature will water boil on the summit? Assume the molar enthalpy of vaporization to be 40.8 kJ/mol over the entire range.