At STP, as the molar mass of the molecules that make up a pure gas increases,...
Which of the following is true about a 0.200 mol sample of nitrogen gas and a 0.200 mol sample of argon gas that are at 1.20 atm and an initial temperature 55.0°C when the temperature changes to 400 K? Assume constant volume for the container under both of these temperature conditions. The density of both gases will increase. There will be more collisions between the gas molecules and the pressure in the container will decrease. None of these choices is...
Determine the following speeds (in m/s) for molecules of the diatomic gas hydrogen at a temperature of 815 K. Use 2.02 x 10-3 kg/mole as the molar mass for hydrogen molecules. (a) root mean square speed 3176 m/s (b) average speed Check your text for an expression which will allow you to determine the average speed of the gas molecules. Enter the temperature in degrees kelvin, take into consideration that we are dealing with a diatomic gas, and be sure...
Consider a given volume of carbon dioxide gas at room temperature (20.00C). (Molar Mass of Carbon dioxide is: 44.0 x 10-3 kg mol-1 J). (i). Calculate the root-mean-square Speed, Vrms, of a molecule of the gas? The answer must be given in scientific notation and specified to an appropriate number of scientific figures. (ii). At what temperature would the root-mean-square-speed be half of that at room temperature?
what is the molar mass of a gas if 1.15 of the gas has a volume of 224 ml at stp
(a) Compute the root-mean-square speed of a nitrogen molecule at 99.6°C. The molar mass of nitrogen molecules (N2) is 28.0x10-3 kg/mol. At what temperatures will the root-mean-square speed be (b) 1/3 times that value and (c) 2 times that value?
Given the mass of a particular gas and the molar mass of the atoms or molecules in the gas, how do you find the number of moles? Divide the molar mass by the mass of the gas. OR Multiply the mass of the gas by the molar mass. OR Divide the mass of the gas by the molar mass.
(a) Compute the root-mean-square speed of a nitrogen molecule at 74.7°C. The molar mass of nitrogen molecules (N2) is 28.0×10-3 kg/mol. At what temperatures will the root-mean-square speed be (b) 1/3 times that value and (c) 2 times that value?
At what temperature is the root-mean-square speed of nitrogen molecules equal to the root-mean-square speed of hydrogen molecules at 46 oC? (Hint: The molar mass of hydrogen atoms is 1.008 g/mol and of nitrogen atoms is 14.007 g/mol. The molar mass of H2 is twice the molar mass of hydrogen atoms, and similarly for N2.) The answer is in degree C.
Molecules in a sample of a gas move at a variety of speeds. Molecular speed can be described by the root-mean-square speed of the gas, which is the square root of the average of the squares of the speeds of all the gas molecules. What is the rms speed of a sample of O2 at 18.99 °C, in m/s?
Molecules in a sample of a gas move at a variety of speeds. Molecular speed can be described by the root-mean-square speed of the gas, which is the square root of the average of the squares of the speeds of all the gas molecules. What is the rms speed of a sample of O2 at 12.49 °C, in m/s? A typed answer is prefered. Answer should be in significant figures.