The density of dry air at 22 C and 104 kPa is 1.228 g/L. Obtain the average molar mass of dry air from these figures.  thank you

Q: You have a sample of an unknown gaseous compound which has a density of 8.51 g/L at 55.0 °C and 88.6…

A: Given: Density of gas = 8.51 g/L Temperature = 55.0oC = 55+273=328.0 K Pressure = 88.6 kPa

Q: Potassium metal reacts violently with water according to the following reaction: 2K 2H,O, HA…

A: The given  Patrs  a,b,c

Q: A very flexible helium-filled balloon is released from the ground into the air at 20. °C. The…

A:

Q: 2320 mmHg to atm

A: Given pressure : P= 2320 mm Hg

Q: A sample of nitrogen occupied 8.0 Liters at 25° C and 98.7 kPa. What would be the volume at 20°C and…

A: Given, V1 = 8.0 L T1 = 25°C = 25+273 = 298 K P1 = 98.7 KPa And T2 = 20°C = 20+273 = 293K P2 = 102.7…

Q: Calculate the volume of hydrogen gas at 273 Kelvin and .95atm when 15.0 g of magnesium reacts with…

A: In chemistry, there are many ways to check the deviation of experimental data from the accurate…

Q: The average kinetic energy of the molecules in a gas sample depends only on the temperature, ?.…

A: Root mean square speed is calculated as: vrms =3 R TM where T= Temperature R = Universal Gas…

Q: A volume of 0.50 L of air at 37 °C is expelled from the lungs into cold surroundings at 0.0 °C. What…

A: Given data, V1 = 0.50 LT1 = 37°C = (37 + 273) = 310KT2 = 0.0°C = 273K To calculate the volume.

Q: Define the term Standard atmospheric pressure?

A: ANSWERE IS DISCUSSED BELOW :

Q: 9. a. A bicycle tire holds 1.50 L of air at 506.6 kPa and 20.0 °C. How many moles of air is this?

A:

Q: At 120 oC, the volume of a sample of nitrogen is 1.07 L. What will the volume be at 205 oC, assuming…

A: Using Charles law of Gas

Q: 2. Balance the following equation and calculate the volume of hydrogen gas produced from the…

A: The balanced chemical reaction is given below.

Q: A sample of 1.00 moles of oxygen at 50℃ and 98.6 kPa occupies what volume?

A: According to ideal gas law, PV = nRT where P = pressure in atm = pressure in KPa / 101.325 = 98.6 /…

Q: Aluminum, an active metal, reacts with hydrochloric acid in a single displacement reaction.  If I…

A: The reaction taking place between is,

Q: A sample of a breathing mixture for divers contained 34.3% helium, He; 51.7% nitrogen, N2; and 14.0%…

A: We have to calculate the density of the mixture.

Q: Calculate the density of SF6 gas at 27.0°C and 1.00 atm pressure.

A: The empirical relationships among the volume, the temperature, the pressure, and the amount of a gas…

Q: A 0.0665 g sample of aluminum metal reacts with hydrochloric acid to give 90.5 mL of hydrogen gas at…

A: Stoichiometry relates the amount of reacting with the formed species. As per this concept, the…

Q: If pressure is expressed in atmospheres and volume is expressed in liters, PAV has units of L atm…

A: P∆V = 4Latm  1 L = 1dm3  1atm = 101,325Pa  P∆V = 4 * 1dm3 * 101325Pa  P∆V = 405300 dm3Pa

Q: A mass of 37.5 g of calcium chlorate is decomposed by heating. How many liters of gas at STP are…

A: When chemical substances combine such that their ionic or molecular structures change to generate…

Q: If 0.610g of magnesium was reacted with HCI and 511mL of hydrogen gas was collected over water at 23…

A: given, weight of Mg = 0.610 g   Theoritical yield of H2 = 511 ml   R = 0.082 L.atm.mol^-1.K^-1

Q: Given 100ml of a dry gas, measuring 37°C and 760mmHg pressure, what would its volume be at 60°C and…

A: Given that: volume, V1 = 100 mL = 0.1 L temperature, T1 = 37 oC = 37 + 273 = 310 K pressure, P1 =…

Q: Calculate the density of nitrogen at STP.  (the answer is suppose to be 1.25g/L)

A: Density is given by the ratio of mass of the substance to that of the volume.

Q: A 37.0L sample of air at 1.00 atm and 25°C is pressurized to 5.15 atm, and only allowed to increase…

A:

Q: A gas filled balloon having a volume of 2.50 L at 1.2 atm and 20⁰C is allowed to rise to the…

A: The final volume of the balloon is to be calculated.

Q: Calculate the height of a column of water at 25 °C that corresponds to normal atmospheric pressure.…

A: Given data contains, Temperature is 25°C. Density of water is 1.0g/cm3=1000kg/m3 Value of…

Q: A very flexible helium-filled balloon is released from the ground into the air at 20. ∘C. The…

A: Given: Initial pressure = 760 mm Hg. Initial temperature = 20 oC Initial volume = 5.00 L Final…

Q: Calculate the rate of effusion of methane gas to nitrogen gas

A: Given Molar mass of Methane gas       = 16 gram/mole  Molar mass of Nitrogen gas       = 28…

Q: A 15.00 L vessel containing 5.65 g H2 gas at 27°C is connected by means of a valve to a 6.0 L vessel…

A: Given; Volume (V1 ) of H2  vessel = 15 L Volume (V2 ) of O2 vessel = 6 L Temperature (T) = 300K…

Q: How many grams of carbon disulfide gas will be produced from a volume of 6.9L and a pressure of…

A: We know  the ideal gas equation is PV = nRT where P = pressure, V = volume, R = ideal gas constant,…

Q: The density of an ideal gas at STP is found to be 1.94 g/L . What is its molar mass? molar mass:…

A: The ideal gas equation is given by: PV=nRT where P is the pressure of the gas V is the volume of the…

Q: What pressure in atm is equivalent to 105.2 kPa?

A:

Q: Calculate the density of hydrogen gas (in g/L) at 899 mmHg and 42.4 °C. ______ g/L

A: According to ideal gas law PV = nRT Where , P = pressure V = volume n = moles of gas R = gas…

Q: The volume of a balloon is 2.85 L at 1.00 X 105 Pa. What pressure is required to compress the…

A: Given data contains, Initial volume of balloon is 2.85L. Initial pressure of balloon is…

Q: If 325.0 ml of oxygen are collected at 298 K and 98.5 kPa, what will be the volume of dry oxygen at…

A: Given that, at temperature (T1) = 298K and Pressure(P1)  = 98.5 kPa;  Volume(V1) of oxygen gas =…

Q: Olympic cyclists fill their tires with helium to make them lighter. Calculate the mass of air in an…

A: The mass of air (mair), having molar mass = 28.8 g/mol, in an air-filled tire is; 125 psi=8.51…

Q: A box contains equal amounts of helium, argon, and krypton (all gases) at 25 °C. Using complete…

A:

Q: Calculate the density of Cl2 gas at STP.    _____________g/L

A: STP is the standard temperature and pressure condition. At STP pressure is 1 atm and temperature is…

Q: Calculate the density of I2  at STP using the ideal gas law. 11.32 g−L−1   from here...…

A: Solution :        Molar volume is known as the volume occupied by one mole of gas. An ideal gas…

Q: calculate the ratio of effusion rates for argon and neon gases 1.19 : 1 0.711 : 1 0.505 : 1 or…

A:

Q: A 5.0-L sample of sulfur hexafluoride (SF6) is stored at a temperature of 250.0 K and a pressure of…

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: A sample of a breathing mixture for divers contained 34.3% helium, He; 51.7% nitrogen, N2; and 14.0%…

A:

Q: For the reaction 6 14C⟶ 7 14N + ?, if 100.0 g of carbon reacts, what volume of nitrogen gas (N2) is…

A:

Q: What is the density of air at 762 mmHg and 32°C? the molar mass of gases in air is 29g/mol.( please…

A: The density of a gas can be calculated by using the ideal gas equation. The ideal gas equation is…

Q: To derive the ideal-gas equation, we assume that the volume of the gas atoms/molecules can be…

A: Given,The atomic radius of neon, 0.69 Å, and volume of 4πr3/3

Q: Why is moist air less dense than dry air?

A: All matter can be classified as solid, liquid and gases mainly. In these physical states of matter,…

Q: Calculate the density (in g/L) of carbon monoxide gas at 21C and 215mmHg.

A: Given information,

Q: *25. n mmh The dimensions of a room are 2.5 m X 4.0 m × 5.0 m. As- sume that the air in the room is…

A: Given Dimensions of room  2.5m x 4.0m x 5.0m Volume of room , V = 2.5 x 4.0 x 5.0 = 50 m3…

Q: 6. A gas-filled balloon having a volume of 2.50 L at 1.2 atm and 25°C is allowed to rise to the…

A: The final volume of balloon is determined by considering that no gas is released from balloon hence,…

Q: The density of air at STP is 1.2754 g/L. If your "250 mL" flask held 272 mL of water (also the…

A: Density, mass and volume are related by the equation given below:

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.