The molecular weight of helium is 4.00 g/mole and its viscosity at 20 o C is...
The molecular weight of helium is 4.00 g/mole and its viscosity at 20 o C is 1.96×10-5 Pa-s. Calculate the following properties of helium at temperature of 20 o C and pressure of 0.01 atmosphere: a) Density; b) Mean thermal speed; c) Mean free path; d) Collision frequency
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The molecular weight of helium is 4.00 g/mole and its viscosity
at 20 o C is...
The molecular weight of helium is 4.00 g/mole and its viscosity at 20 o C is...
The molecular weight of helium is 4.00 g/mole and its viscosity at 20 o C is 1.96×10-5 Pa-s. Calculate the following properties of helium at temperature of 20 o C and pressure of 0.01 atmosphere: a) Density; b) Mean thermal speed; c) Mean free path; d) Collision frequency
TB3 Liquid nitrogen is much cheaper than liquid helium. The molecular weight of diatomic nitrogen (N2) is about 28 g/mole and that of atomic helium is about 4 g/mole. One reason for this is that whil...
TB3 Liquid nitrogen is much cheaper than liquid helium. The molecular weight of diatomic nitrogen (N2) is about 28 g/mole and that of atomic helium is about 4 g/mole. One reason for this is that while nitrogen is the most common constituent of the atmosphere, only minute amounts of helium are found in the atmosphere. (Helium is found in natural gas deposits.) Why are only minute amounts of helium found in the atmosphere? TB3 If the absolute temperature of a...
Density of water = 998 kg/m^3 Molecular weight of CaCO3 = 100 g/mole please help to...
Density of water = 998 kg/m^3
Molecular weight of CaCO3 = 100 g/mole
please help to solve this problem
Determine the concentration, molarity, normality, and mole fraction of a 2-L solution containing 50 g calcium carbonate (CaCO3). Assume that the density of water is based on a temperature of 20°C/68°F.
5. Consider these properties of chloroform boiling point: 61°C molecular weight: 119.37 g/mole density: 1489 g/ml...
5. Consider these properties of chloroform boiling point: 61°C molecular weight: 119.37 g/mole density: 1489 g/ml Cloroform and water are mutually insoluble: they form two layers w hen mixed. wso ml. of water and S0 ml of chloroform are mixed, which layer is on top? Whs? o. We want to convert O.30 moles of phenol into 2.4.6-trinitrophenol using .0 M HNO How many mls of this nitric acid solution should we use? Show your work 7. Consider this reaction CH...
1) (25 points) The molecular weight of a polymer can be determined from its viscosity by the following relationship where [n] is the intrinsic viscosity of the polymer M, is the viscosity averaged mo...
1) (25 points) The molecular weight of a polymer can be determined from its viscosity by the following relationship where [n] is the intrinsic viscosity of the polymer M, is the viscosity averaged molecular weight, and K and a are constants specific for the polymer. The intrinsic viscosity is determined experimentally be determining the efflux time, or the time it takes for the polymer solution to flow between two etched lines in a capillary viscometer, at several different concentrations of...
Q1. An isolated container is filled with 2.00 mole of helium gas at temperature 20 °C. a) How much heat must be tra...
Q1. An isolated container is filled with 2.00 mole of helium gas at temperature 20 °C. a) How much heat must be transferred to the gas to increase its temperature to 200 °C if it is heated at constant volume? b) How much heat must be transferred to the gas to increase its temperature to 200 °C if it is heated at constant pressure? c) What is the work done in both process?
Q1. An isolated container is filled with...
The atmosphere contains 21% oxygen and 78% nitrogen (and 1% of other gases). At standard temperature...
The atmosphere contains 21% oxygen and 78% nitrogen (and 1% of other gases). At standard temperature and pressure (0°C and 1.013 x 10 Pa) calculate the following for both oxygen and nitrogen: (a) The partial pressure (b) The average kinetic energy per module (c) The rms speed of the molecules (d) Assuming an average molecular diameter of 3.5 x 1010 m for both oxygen and nitrogen, T1. estimate the mean free path of molecules in the atmosphere at STP Molar...
1. The critical temperature and pressure of water are 647.1 K and 217.7 atm. For a...
1. The critical temperature and pressure of water are 647.1 K and 217.7 atm. For a sample of steam just below its critical point, 600.0 K and 200.0 atm, a. Calculate the number density. b. Calculate the mean free path. Assume the diameter of a water molecule is 0.15 nm. c. Compare these results to those for air at 1 atm and 298 K. d. Calculate the average speed of water molecules under these conditions, e. Calculate the collision frequency...
5.82 The temperature in the stratosphere is -23 C Calculate the root-mean-square speeds of N O...
5.82 The temperature in the stratosphere is -23 C Calculate the root-mean-square speeds of N O and O, molecules in this region. The average distance traveled by a molecule be- tween successive collisions is called mean free path. For a given amount of a gas, how does the mean free path of a gas depend on (a) density, (b) tem- perature at constant volume, (c) pressure at constant temperature, (d) volume at constant temperature. and (e) size of the atoms?...
The distributions of molecular speed for five gases that are at 200 °C are shown below. Which of the following g...
The distributions of molecular speed for five gases that are at 200 °C are shown below. Which of the following gases corresponds to the curve labeled IV? o o o o o At a particular temperature, the root mean square speed of Ne gas molecules is found to be 616 mis. Identify the distribution function below that corresponds to N, same temperature the Hint: use information about the rms speed to identify the curve of molecules Moll speed (m )...
TB3 Liquid nitrogen is much cheaper than liquid helium. The molecular weight of diatomic nitrogen (N2) is about 28 g/mole and that of atomic helium is about 4 g/mole. One reason for this is that while nitrogen is the most common constituent of the atmosphere, only minute amounts of helium are found in the atmosphere. (Helium is found in natural gas deposits.) Why are only minute amounts of helium found in the atmosphere? TB3 If the absolute temperature of a...
Density of water = 998 kg/m^3
Molecular weight of CaCO3 = 100 g/mole
please help to solve this problem
Determine the concentration, molarity, normality, and mole fraction of a 2-L solution containing 50 g calcium carbonate (CaCO3). Assume that the density of water is based on a temperature of 20°C/68°F.
5. Consider these properties of chloroform boiling point: 61°C molecular weight: 119.37 g/mole density: 1489 g/ml Cloroform and water are mutually insoluble: they form two layers w hen mixed. wso ml. of water and S0 ml of chloroform are mixed, which layer is on top? Whs? o. We want to convert O.30 moles of phenol into 2.4.6-trinitrophenol using .0 M HNO How many mls of this nitric acid solution should we use? Show your work 7. Consider this reaction CH...
1) (25 points) The molecular weight of a polymer can be determined from its viscosity by the following relationship where [n] is the intrinsic viscosity of the polymer M, is the viscosity averaged molecular weight, and K and a are constants specific for the polymer. The intrinsic viscosity is determined experimentally be determining the efflux time, or the time it takes for the polymer solution to flow between two etched lines in a capillary viscometer, at several different concentrations of...
Q1. An isolated container is filled with 2.00 mole of helium gas at temperature 20 °C. a) How much heat must be transferred to the gas to increase its temperature to 200 °C if it is heated at constant volume? b) How much heat must be transferred to the gas to increase its temperature to 200 °C if it is heated at constant pressure? c) What is the work done in both process?
Q1. An isolated container is filled with...
The atmosphere contains 21% oxygen and 78% nitrogen (and 1% of other gases). At standard temperature and pressure (0°C and 1.013 x 10 Pa) calculate the following for both oxygen and nitrogen: (a) The partial pressure (b) The average kinetic energy per module (c) The rms speed of the molecules (d) Assuming an average molecular diameter of 3.5 x 1010 m for both oxygen and nitrogen, T1. estimate the mean free path of molecules in the atmosphere at STP Molar...
1. The critical temperature and pressure of water are 647.1 K and 217.7 atm. For a sample of steam just below its critical point, 600.0 K and 200.0 atm, a. Calculate the number density. b. Calculate the mean free path. Assume the diameter of a water molecule is 0.15 nm. c. Compare these results to those for air at 1 atm and 298 K. d. Calculate the average speed of water molecules under these conditions, e. Calculate the collision frequency...
5.82 The temperature in the stratosphere is -23 C Calculate the root-mean-square speeds of N O and O, molecules in this region. The average distance traveled by a molecule be- tween successive collisions is called mean free path. For a given amount of a gas, how does the mean free path of a gas depend on (a) density, (b) tem- perature at constant volume, (c) pressure at constant temperature, (d) volume at constant temperature. and (e) size of the atoms?...
The distributions of molecular speed for five gases that are at 200 °C are shown below. Which of the following gases corresponds to the curve labeled IV? o o o o o At a particular temperature, the root mean square speed of Ne gas molecules is found to be 616 mis. Identify the distribution function below that corresponds to N, same temperature the Hint: use information about the rms speed to identify the curve of molecules Moll speed (m )...
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