How does a barometer work? Is the column of mercury in a barometer shorter when it is on a mountaintop or at sea level?Explain.

Q: 1.00 mmol of nitrogen gas takes 60.9 min to effuse through a small hole. Based on your calculation,…

A: The rate of effusion can be calculated as the volume or number of moles of gas escaping through a…

Q: If flask B were smaller than flask A, would the final pressure after the stopcock is opened be…

A: Final pressure after stopcock opens       When the stopcock opens, gas expands to occupy both the…

Q: In which situation must you do more work: inflating a balloon at sea level or inflating the same…

A: That work done at constant pressure is dW = pdV  That pressure at sea level is more than pressure at…

Q: The graph below shows the distribution of molecular speeds for argon and helium at the same…

A:

Q: What volume (in L) does a 1.34 g  sample of chlorine gas occupy at SATP?

A: Ideal gas equation is equation which obeys gas law under all conditions of temperature and pressure.

Q: equal volumes of ammonia (NH3) and ozone (O3), at the same pressure and temperature that they have?

A: We know that for gasses  PV = nRT  n = PV/RT

Q: Would the volume be different if the gas was argon (under the same conditions)? Match the words in…

A: ideal gas volume is independent of molar mass of the gas.

Q: What final pressure must be applied to a sample of gas having a volume of 200. mL at 20.0°C and 750.…

A: Initial volume = 200 ml  Initial temperature = 20°C   Initial pressure = 750 torr Final volume = 600…

Q: Liquid oxygen can be produced for use as a rocket fuel by cooling dry air to -183°C, where the O₂…

A: The explanation is given below-

Q: Why is Mercury used in barometers instead of water?

A: The density of mercury is 13.6 g/mL and water is 1 g/mL

Q: Is the rate of effusion of a gas higher than, lower than, or equal to its rate of diffusion?…

A: Diffusion of a gas is a phenomenon by which the molecules of gases mix gradually because of the…

Q: Is the rate of effusion of a gas higher than, lower than, orequal to its rate of diffusion? Explain.…

A: At particular temperature, the most probable molecular speed increases as the molar mass decreases…

Q: At what temperature will a 5.00 g sample of neon gas exert a pressure of 495 torr in a 8.00 L…

A: The ideal gas equation is PV = nRT P = pressure of gas V = volume  n = moles of gas = mass/molar…

Q: A sample of nitrogen occupies 750 mL at 24 degrees Celsius at 595 torr. At what temperature ( in…

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Q: A pressure of 150 KPa is equivalent to how many meters of water? Of mercury (sHg = 13.6)?

A:

Q: At what temperature does the rms speed of O2 molecules equal 475. m/s?

A:

Q: How much faster do helium atoms effuse from a balloon than do oxygen molecules?

A: According to the graham's law of effusion, where vA = speed of effusion or rate of effusion of gas…

Q: What volume would 1.84×1023 molecules of an ideal gas occupy at STP?

A: STP is Standard Temperature and Pressure, where temperature, T = 273.15 K and pressure, P = 100 kPa…

Q: What is the pressure exerted by a 1.56 mol sample of water at 3.0L and 24oC?

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Q: A barometer reading gives a pressure of 761 mmHg. What is this value in units of atm?

A: A barometer reading in mmHg scale which is to be converted into atm units.

Q: why in barometers mercury is preferred to measure pressure but not the water?

A: Mercury is used in barometers since it has low vapor pressure hence it can expand more easily when…

Q: Which gas law does NOT have a directly proportional relationship between its properties? Boyle…

A: The gas law that does NOT have a directly proportional relationship between its properties has to be…

Q: Carbon monoxide burns in oxygen to form carbon dioxide.  Provide a balanced chemical equation. What…

A: Interpretation- To write the balanced chemical equation when carbon monoxide burns in oxygen to form…

Q: At what temp will a 3.00g sample of neon gas exert a pressure of 459torr in a 3.00L container? What…

A: Ideal Gas Law :-  PV = nRT  P is the pressure of gas  V is the volume occupied by gas n is the…

Q: a.) What are the relative rates of effusion of CH4 and He? b.) If these two gases are simultaneously…

A: Graham's Law of Diffusion and Effusion: This law states that the rate of diffusion or effusion (r)…

Q: To what temperature must neon atoms be cooled so that they have the same rms speed as N2 molecules…

A: we have   vrms=3RTM   Equating (v)rms for Ne and N2, we have (v)rms(Ne) = (v)rms N2…

Q: Compare to the rate of effusion of N2, the rate of effusion of SF6 is?

A: According to Graham's Law of effusion, the rate of effusion is inversely proportional to the…

Q: 5.89 What is the ratio of rates of effusion of N2 and O2 un- der the same conditions?

A: Effusion:- It is the phenomenon of passing or movement of gas molecules through a tiny or small…

Q: At a certain temperature, the speed of six gaseous molecules in a container are 2.0 m/s, 2.2 m/s,…

A: Root mean square value is devired as square root of mean square or it is the sum of square of…

Q: The manometer on the right shows mercury (l) with a 19 cm (190  mm) difference between the gas in…

A:

Q: Explain how a barometer and a manometer work to measure the pressure of theatmosphere or the…

A: The working of barometer and manometer to measure the pressure of atmosphere (or) pressure of gas in…

Q: How can comparing the rates of effusion of gases X and Y allow the molar mass of Y to be calculated?…

A:

Q: In the barometer invented by Torricelli, would we expect the column of mercury higher or shorter on…

A: Barometer seems to be a technical device for measuring atmospheric pressure. The glass tube of a…

Q: 627 cm3 of a gas at 14°C occupies what volume at 40 °C, if the pressure does not change? unit:

A: According to Charles's law, the volume of the gas increases when the temperature of the gas…

Q: What is the mass of a piece of magnesium wire that produces 48.7 mL of hydrogen gas collected over…

A: Reaction:  Mg(s) + 2H+(aq) ---> 2Mg (aq) + H2 (g) 1 mol of H2 gas is produced by 1 mol of Mg…

Q: What volume would 1.75×1023 molecules of an ideal gas occupy at STP?

A:

Q: It takes 1 mL of nitrogen gas 163 seconds to effuse through a small hole. Remember, 1 mmol of an…

A:

Q: If a gas filled balloon has a volume of 1 Liter at ten feet underwater, would you predict the volume…

A: The volume of the balloon would decrease.

Q: Calculate the volume of a sample of carbon monoxide that is at -12 degrees Celsius and 367 torr if…

A:

Q: 1. A student neglected to keep the end of the delivery tube under the surface of the water displaced…

A: 1. Answer - According to the question - 1.The effect on  volume of the hydrogen collected - As…

Q: How much faster does nitrogen monoxide (NO) effuse in comparison to dinitrogen tetraoxide (N2O4)?

A:

Q: how much faster will a balloon filled with He deflate through effusion than one filled with O2?

A: According to Graham law of diffusion the rate of effusion of a gas is inversely proportional to…

Q: Argon gas is 10 times denser than helium gas at the same temperature and pressure. Which gas is…

A: According to Graham’s law, if a mixture contains two gases, then the rate of effusion will be…

Q: Why is mercury generally used for barometers instead of water?

A: Mercury is used in barometers instead of water. It has many advantages such as: 1) The density of…

Q: How does the barometer works ? And what is it

A:

Q: What is a manometer? How does it measure the pressure of a sample of gas?

A: Pressure is nothing but the force exerted per unit area. Various instruments are used to measure the…

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.