A manometer was connected to a bulb containing an unknown gas under slight pressure. The gas was allowed to escape through a small pinhole, and the time for the manometer reading to drop from 75 cm to 50 cm was 52 s. When the experiment was repeated using nitrogen (for which M = 28.02 g mol−1) the same fall took place in 42 s. Calculate the molar mass of the unknown gas. Hint: The pressure changes and, as a consequence, so does the rate of effusion; note, however, that the change is the same in both cases.

Q: Describe and explain (i) how the thermal stabilities of the Group 17 hydrides vary down the Group,…

A: Thermal stability of the hydrides are decided on the basis of their bond strength.  While volatility…

Q: container fitted with a piston of cross-sectional area 20cm2. As a result of the reaction, the gas…

A: Work done in compression is positive. W= pv Volume= area×length

Q: 4. (a) Determine the reduced pressure (P,), volume (V,), and temperature (T,) for a 50 L sample of…

A:

Q: A political candidate fighting for a smoke-free environment conducts an experiment in a room…

A: Concentration of CO introduced in the room = 4% =0.04 Volume of Room = 1400 ft3 Rate of CO inside…

Q: Four hundred grams of Oxygen (molecular weight=32) are stored in a 10-liter container. Set up an…

A:

Q: C9H8O4 is synthesized by reacting stoichiometric amounts of C7H6O3 and (CH3CO)2O, as shown by the…

A: Stoichiometric reactions are reactions where a relationship between the quantity of reactant needed…

Q: The volume of a gas is 250 mL as 340 kPa pressure. What will the volume be when the pressure is…

A: In ideal gas there is no force of attraction between gaseous molecule, collision are elastic and…

Q: (ii) An inventor of a MOS (metal oxides) methylcyclohexane gas monitor (in presence of catalyst) is…

A: SOLUTION: Step 1: The balanced chemical equation for the combustion of methylcyclohexane is as…

Q: A chemical engineer must calculate the maximum safe operating temperature of a high-pressure gas…

A: The width and height of the cylindrical reaction vessel is 22.0 cm and 26.4 cm, respectively. The…

Q: The density of an ideal gas can be written in terms of the variables p and T: Mp where M is the…

A: We see cyclic rule first for the given equation d = MP/RT For solving this problem you must have…

Q: Suppose that 6.5 mmol argon gas occupies 42 cm^3 at 298 K and expands isothermally to 162 cm^3.…

A: Given: Moles of argon gas   = 6.5 mmol Initial volume of gas = 42 cm3 Final volume of gas  = 162 cm3…

Q: THIS QUESTION IS SOLVED DO THE BELOW ONE(Q10.15): Determine the kinetic energy, in joules per mol…

A:

Q: Please help me solve the following question, explain and make sure everything is correct, thanks…

A:

Q: The autoclave machine is widely used in molecular biology lab to sterilize tubes and dishes. The…

A: To determine the operation pressure of the autoclave machine, we can use the Ideal Gas Law: PV = nRT…

Q: 5. At its normal boiling point (337.3 K), methanol (CH3OH) has AvapH = 25.79 kJ/mol, and the…

A: As per Clausius-Clapeyron equation, dPdT=∆HT∆V

Q: AG rxn= -0.6932RT.

A:

Q: Is the reaction exothermic or endothermic? (exothermic, or endothermic) Does the temperature of the…

A: a. Here it is told that the energy is absorbed at 216 kJ thus the reaction is Endothermic as the…

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Q: (6) Consider an ideal gas for which pV = n RT. Determine the change in pressure, p, for n = 2.0…

A: Answer: Ideal gas equation is shown below: PV=nRTP=nRTV Here: P=pressure of the gasV=volume occupied…

Q: A quantity of gas in a piston cylinder has a volume of 0.475 m3 and a pressure of 200 Pa. The piston…

A: Initial Volume = 0.475m3 Pressure = 200Pa Final Volume = 0.272m3    Pressure = ? Isothermal process…

Kinetic-Theory of Gases

Kinetic theory of gases is the model or method which was developed in the 19th century by Maxwell and Boltzmann. This is possible as the interatomic force which is of short-range forces that are important for solids and liquids can be neglected for gases. This theory or gas law gives a molecular interpretation of the pressure and temperature of a gas and is consistent with gas laws and Avogadro’s hypothesis. This theory is very helpful to correctly explain the specific heat capacities of many gases, kinetic energy and it also explains the transport qualities such as viscosity, thermal conductivity, and diffusion with molecular parameters. As stated in the kinetic-molecular theory, the temperature of a substance or gas particle is related to the average kinetic energy of the particles of that substance. When a substance is heated, some of the absorbed energy is stored within the particles, while some of the energy increases the motion of the particles, called average kinetic energy.