Root mean square speed is given by (3RT/M)1/2
where R= gas constant, T = temperature ,M = molar mass
Factors which affect the RMS speed of a particle
1) Temperature
2) Molar mass
option 2 and 4 are correct.
Of the following, determine which will affect the RMS speed of a particle? Volume Temperature Pressure...
chpt.9 pg 11: Pressure and temperature affect the amount of space between gas molecules, which affects the volume and, therefore, the density of the gas since density=massvolume The molar mass of a substance, however, is a constant and can be used to identify an unknown gas sample. Molar mass is found by dividing the mass of a sample (in grams) by the number of moles in that sample. The number of moles of gas can be calculated using the ideal...
Which of the following does not affect gas pressure? _ Volume of the container _ Temperature of the gas _ Number of molecules of the gas _ Chemical formula of the gas
1) Given the following data, calculate the temperature of the gas in Kelvin, the pressure of the gas in atm, the mass of the condensed liquid, the volume of the gas in L, the moles of gas in the flask and then calculate the molar mass of the unknown liquid Mass of empty flask and foil 78.639g 99.3°C 14.4 psi 79.118g Temperature of hot water atm Pressure in lab Mass of flask, foil and condensed unknown liquid AFTER heating and...
Standard Temperature and Pressure Standard Temperature Standard Pressure Is there such a thing as standard volume? Example #1 A gas at 772 mmHg and 35.0°C occupies a volume of 6.85 L. Calculate its volume at STP. Remember Mass to moles → Formula Weight Volume of solution to moles → Molarity Volume of a gas to moles → Ideal Gas Law
Given rms speed, c = (3 RT/M)^1/2 Determine the temperature and pressure of 3.01 times 10^23 gas molecules, each with a mass of 6.64 times 10^-26 kg, in a 5 times 10^-3 m^3 container if the rms speed is 560 m/s. These molecules are distributed in 2 states with energies of 0 and 5 epsilon (epsilon =1.381 times 10^-21 J). There is no degeneracy for the first level. The second level is doubly degenerated. Calculate number of molecules in each...
The rms speed of a sample of gas is increased by 9 % . A. What is the percent change in the temperature of the gas?ΔT/T= B. What is the percent change in the pressure of the gas, assuming its volume is held constant?
The rms speed of a sample of gas is increased by 9 % . A. What is the percent change in the temperature of the gas?ΔT/T= B. What is the percent change in the pressure of the gas, assuming its volume is held constant
Which of the following statements about ideal gases is incorrect? At a constant pressure, when temperature increases, volume increases. O A gas with a larger molar mass will have a higher density Gas pressure is directly proportional to the number of moles of gas. At constant volume, when the temperature increases, pressure decreases. At a constant temperature, when the volume decreases, the pressure increases. Consider the balanced reaction: C3H8 +502—3CO2+ 4H20 How many mol of C3Hg must be consumed via...
37. Which of the following pairs does NOT exhibit a direct relationship? A pressure and volume D. all are direct B. pressure and temperatureC. volume and temperature 38. Determine what the pressur is inside of a 15.0L container holding 3.5 moles of H gas at 298.15 . E. 5.7 atm D. 1.4 atm A. 4.8 atm C. 86 atm 8.110 atm 39. If volume and the amount of gas within a container remains constant, what will happen to the pressure...
For a certain amount of gas at constant temperature, the pressure and volume have an inverse relationship (Figure 1). This is called Boyle's law: P1V1=P2V2 A. A sample of ideal gas at room temperature occupies a volume of 33.0 L at a pressure of 862 torr . If the pressure changes to 4310 torr , with no change in the temperature or moles of gas, what is the new volume, V2? B. If the volume of the original sample in...