A sample of air contains 78.08% nitrogen, 20.94% oxygen, 0.0500% carbon dioxide, and 0.930% argon by volume. How many molecules of each gas are present in 7.45 L of the sample at 43°C and 3.64 atm? Enter your answers in scientific notation.

Q: The apparatus shown below contains nitrogen and hydrogen gases in the flasks with the valve closed.…

A: First, we will calculate the number of moles of Nitrogen and Hydrogen in the apparatus: As we know,…

Q: A sample of gas has an initial volume of 480.09 mL and an initial temperature of 578.87 K. What is…

A: P= constant V1 = 480.09 mL T1 = 578.87 K V2 = 1,038.90 mL T2 = ?

Q: A gas in a balloon has a pressure of 755 mm Hg and occupies a volume of 2.5 L. If the pressure of…

A: Given information, Initial pressure (P1) = 755 mm Hg Initial volume (V1) = 2.5 L Final pressure (P2)…

Q: tank contains helium gas at 473 mmHg, nitrogen gas at 0.719 atm, and neon at 572 torr.  Calculate…

A: Total pressure is equal to sum of pressure of all gases

Q: A mixture of oxygen and neon gases is maintained in a 8.18 L flask at a pressure of 2.03 atm and a…

A: Assume that the mixture is an Ideal gas and apply the Ideal gas equation.P is the total pressureV is…

Q: Which is a postulate of the kinetic molecular theory of gases? 1 Despite being very small, the…

A: The kinetic molecular theory of gas is a model explaining thermodynamic behaviour of gases.…

Q: 2.5 L of octane gas, C8H18, is combusted with 20.5 L of oxygen gas and ignited. What volume of…

A: Volume of octane gas = 2.5 L Volume of oxygen gas = 20.5 L Pressure = 0.995 atm Temperature = 22.0oC…

Q: At 1.391.39 atm and 22.75 ∘C22.75 ∘C, a 2.772.77 g sample of gas occupies a volume of 15501550 mL.…

A: An ideal gas is an hypothetical gas where the particles are randomly moving with no inter-particle…

Q: A 9.20 L container holds a mixture of two gases at 27 °C. The partial pressures of gas A and gas B,…

A: First, the partial pressure of third gas added to the mixture is determined using PV= nRT formula.…

Q: A sample of helium gas at a pressure of 923 mm Hg and a temperature of 72 °C, occupies a volume of…

A:

Q: A gas sample is collected in a 0.249 L container at 28.1 °C and 0.912 bar. If the sample has a mass…

A: Using law of Ideal gas, we can determine the moles of gas present in the sample.  Ideal gas law-  PV…

Q: Determine the mass, in grams, of a sample of gas that occupies 668.9 milliliters, at a pressure of…

A: The objective of the question is to calculate mass of the sample of gas.

Q: 132.0 g of chlorine gas (Cl2) and 24.0 g of helium (He) are mixed in a container with a total…

A: Given,  Mass of. Cl2 = 132 g Molar mass of Cl2 = 71 g/mol Moles = mass/MM     = 132/71   = 1.86 mol…

Q: What volume is occupied by 20.3 g of argon gas at a pressure of 1.47 atm and a temperature of 449 K?…

A: According to ideal gas equation, PV = nRT Therefore, Assuming this to be an ideal gas , The volume…

Q: A gas occupies a volume of 143.2 mL at a pressure of 775.1 mmHg and a temperature of 74.7 °C. If the…

A:

Q: A balloon containing 0.75 mol of nitrogen gas has a volume of 16.8 L. If the amount of nitrogen in…

A:

Q: Consider a sample of argon gas at 20.0ºC, 2167 mm Hg, and 1,450 mL. How many moles of argon are in…

A: Given, Pressure of argon gas (P) = 2167 mmHg = 2.85 atm Volume of argon gas (V) = 1,450 mL = 1.45 L…

Q: An anesthetic gas contains 64.81% carbon, 13.60% hydrogen, and 21.59% oxygen, by mass. If 2.00 L of…

A: According to the question,  Anesthetic gas contains 64.81% carbon, 13.60% hydrogen and 21.59%…

Q: A sample of oxygen occupies 481 mL when the pressure is 797 mm Hg. At constant temperature, what…

A: We know as per Boyle's law,  At constant temperature,  P1V1 = P2V2   Where P1 is initial pressure,…

Q: The density of nitrogen at 0.913 atm and 18°C is 1.07 g/L.  Explain how these data show that the…

A: Density of the gas(ρ) = PM RT Density of the gas(ρ) =1.07 g/L. P = pressure of gas = 0.913 atm M =…

Q: A mixture of helium and carbon dioxide gases, at a total pressure of 920 mm Hg, contains 1.38 grams…

A: Given: Total Pressure of the mixture(Pt)= 920mmHg Mass of Helium gas = 1.38 g Mass of Carbon dioxide…

Q: 1.82 g sample of unknown gas is found to occupy a volume of 2.09 L at a pressure of 1.14 atm and…

A: In this question, we want to determine the molar mass of the gas. How we can determine the molar…

Q: Consider a sample of argon gas at 375ºC, 382 mm Hg, and 425 mL. How many moles of argon are in this…

A: Given, Temperature = 375°C Pressure = 382 mmHg  Volume = 425 mL  Number of moles = ?

Q: 103.0 g of chlorine gas (Cl2) and 23.0 g of helium (He) are mixed in a container with a total…

A:

Q: sample of gas has a mass of 38.9 mg. Its volume is 226 mL at a temperature of 57 ∘C and a pressure…

A: Assuming the gas to be an ideal gas, ideal gas equation will be used to calculate the molar mass of…

Q: A sample of nitrogen gas has a volume of 2.58 L at 23°C. What volume will it occupy at 84°C if the…

A: According to Charles's law for an ideal gas in two different states keeping the pressure and number…

Q: de gas is collected at -7.0 °C in an evacuated flask with a measured volume of 50.0 L. When all the…

A: Answer: temperature (T) = -70C      = 273-7 = 266K  Volume(V)= 50 L  Pressure (P)= 0.37atm  R (gas…

Q: The original volume of a gas sample was 0.75 L at a temperature of 25°C. The final volume,…

A: According to gas law, PiViTi=PfVfTf Pi = ? Vi = 0.75 L Ti = 25°C = 273+25 = 298 K Pf = 5.5 atm Vf =…

Q: A mixture of oxygen and carbon dioxide gases is maintained in a 5.57 L flask at a pressure of 2.73…

A: The objective of the question is to find the mass of carbon dioxide in a mixture of gases, given the…

Q: A 270-mL gas sample contains argon and nitrogen at a temperature of 58∘C. The total pressure of the…

A: Given  Volume ( V ) = 270 mL                       = 0.270 Liter  Temperature ( T )     =  58 ℃…

Q: A sample of air contains 78.08% nitrogen, 20.94% oxygen, 0.0500% carbon dioxide, and 0.930% argon by…

A: In the given we will find no of moles first using ideal gas formula PV=nRT, then Multiply it with…

Q: When 1.10 g of zinc metal is treated with 300.0 mL of 0.800 M nitric acid solution, the products are…

A: Given : Mass of zinc i.e Zn taken = 1.10 g Concentration of nitric acid i.e HNO3 taken = 0.800 M And…

Q: A sample of nitrogen gas at 13°C and 760. mmHg has a volume of 8.83 mL. What is the volume of gas at…

A:

Q: A sample of nitrous oxide gas,N2O, occupies a volume of 546 L at a pressure. of 0.302 atm. What…

A: Boyle's law: Pressure of an given amount of ideal is inversely proportional its volume at constant…

Q: A sample of unknown gas effuses in 74.1 minutes. An equal volume of argon in the same apparatus at…

A:

Q: A gas mixture with a total pressure of 765 mmHg contains each of the following gases at the…

A:

Q: sample of gas occupies 748.7 mL, at 7.76 atm, and 152.4°C. How many moles are in the sample of gas?…

A: Ideal gas equation          PV= nRT.                      Here n is mole of gas

Q: At 618 mm Hg, a sample of nitrogen gas occupies 490 mL.  What volume does the gas occupy if the…

A: We know Boyle's Law states that, "The absolute pressure(P) exerted by a given mass of an ideal gas…

Q: A 1.897 gram sample of an unknown gas is found to occupy a volume of 0.745 L at a pressure of 1.22…

A: Interpretation -  To determine the molecular weight of the unknown gas when a 1.897 gram sample of…

Q: The atmosphere in a sealed diving bell contained oxygen and helium. If the gas mixture has 0.170 atm…

A: Given: The total pressure of the gas mixture = 2.90 atm The pressure of oxygen in the mixture =…

Q: A gas sample is held at constant pressure. The gas occupies 3.62 L of volume when the temperature is…

A: Charles law states that the volume of an ideal gas is directly proportional to the absolute…

Q: The atmosphere in a sealed diving bell contained oxygen and helium. If the gas mixture has 0.170 atm…

A: Given: Total pressure of mixture = 3.40 atm. Partial pressure of oxygen = 0.170 atm. Volume of…

Q: A sample of neon gas occupies a volume of 6.42 L at 68.0°C and 331 torr. If the volume of the gas…

A:

Q: A 3.25 L glass bottle containing chlorine gas is sealed at a temperature of 113ºC at 7.48 atm. What…

A:

Q: A gas initially at 4.83 L, 1.36 atm, and 81°C undergoes a change so that its final volume and…

A:

Q: A 1.9097 gram sample of an unknown gas is found to occupy a volume of 0.617 L at a pressure of 1.038…

A:

Q: A sample of oxygen gas at a pressure of 717 mm Hg and a temperature of 67 °C, occupies a volume of…

A: According to the Charles law, the volume of an ideal gas at a constant pressure will be directly…

Q: mixture contains 4.63 grams of oxygen, the number of

A: moles of O2 = ( mass / molar mass of O2 )  moles of O2 = ( 4.63g / 32gmol-1 )  moles of O2 ( nO2)  =…

Q: volume

A:

Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.