How easy is it to breathe through a straw? When you breathe deeply, you pull in 4.0 L of air in about 3.0s. This requires a pressure difference of about 4.0 kPa between the air in your lungs and the outside air. What additional pressure difference is required to pull 20⁰C air through a straw that is 23 cm long and 0.56 cm in diameter

Q: Calculate the mean free path of molecules in air using σ = 0.43 nm2 at 25°C and (a) 10 atm, (b) 1.0…

A: Given: σ = 0.43 nm2  Temperature = 25°C = 298 K

Q: What is the root mean square velocity (in m/s) of Cl at 273.0 K.

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Q: Calculate the original volume of a gas at STP if the new volume is equal to 6301 at 301 K and 125…

A: Given that the new volume of gas = 630 L temperature of gas =301 K pressure of gas =125 kPa…

Q: The volume of a gas that fits the van der Waals equation at a given temperature and pressure of 4.00…

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Q: 500.0 mL of air are trapped in a tube at 25.0°C. It is found that after six days the air has…

A: All the molecules of gas constantly colliding with the walls of the container that is why it is said…

Q: The partial pressure of the hydrogen gas collected is 0.931 bar. If the total volume of gas…

A: Given data is as follows: The pressure of hydrogen gas = 0.931 bar The volume of hydrogen gas = 728…

Q: The pressure of a mixture of F2 (g) and Cl2 (g) in a 22-L flask maintained at 37 °C is 234.32 kPa…

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Q: What is the answer to this problem? A mixture of gases consists of Na, O2, H, and F2- The total…

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Q: In order to determine the rate of photosynthesis (the conversion by plants of carbon dioxide and…

A: Given: T = 293 k Total Pressure = 754.9 mmHg Value of gas colleted = 1.58 L Partial pressure = 17.55…

Q: How long, in minutes, will it take 10.0 ml of H2 gas to effuse through a porous barrier if it has…

A: The time is to be calculated

Q: To what temperature does a 0.25 L cylinder containing 0.10 moles of helium gas need to be cooled in…

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Q: The pressure of a mixture of F2 (g) and Cl2 (g) in a 22-L flask maintained at 37 °C is 234.32 kPa…

A:

Q: As a woman walks, her entire weight is momentarily placed on one heel of her high-heeled shoes.…

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Q: bicycle pump inflates a tire whose volume is 664 mL until its internal pressure is 5.56 bar at a…

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Q: A sample of a gas in a cylindrical chamber with a movable piston occupied a volume of 11.60 liters…

A:

Q: 0.0-L containers are filled to a pressure of 10,270 kPa at 90.00°F with the given gases. 1. C3H3 2.…

A: Volume of container = 100 L Pressure ,P = 10270 kPa = 101.35 atm Temperature , T = 90 F = 305.372 K…

Q: Calculate the density of a gas at STP if a given volume of the gas effuses through an apparatus in…

A: By using Graham's law of effusion . Rate of effusion of any gas is inversely proportional to square…

Q: a) 2 H2O20) -> Oze) + 2 H2O0 If oxygen acted as an ideal gas, each 1.00 ml of 3.0 % of H2O2 should…

A: Given: Volume of 3% H2O2 = 1.0 mL Temperature = 25 oC Pressure = 101.3 kPa. Volume of oxygen = 10.0…

Q: On the mountain in Kalinga ,a mountain biker carried an aneroid barometer in his bike from base to…

A: Given: Barometric pressure on the ground = 35.12 in.Hg Barometric pressure on the mountain = 26.807…

Q: Calculate the density of a gas at STP if a given volume of the gas effuses through an apparatus in…

A: Given: Conditions are STP i.e. temperature of 273.15 K and pressure of 1.0 atm. The unknown gas…

Q: 6. Carbon monoxide and carbon dioxide are at the same temperature. Which moves faster? 7. How does…

A: The  molecular mass of CO is 28.01 amu, whereas molecular mass of CO2 is 44.01 amu. The rate of…

Q: Calculate the volume of a 0.0461 mol sample of gas which has a pressure of 99.6 kPa at 378 °C. Make…

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Q: By what factor would a scuba diver's lungs expand if she ascended rapidly to the surface from a…

A: SOLUTION: Step 1: The total pressure (external) on a scuba diver at depth 134.5 ft would be the sum…

Q: What is the difference between effusion and diffusion? A) Diffusion separates gases, and effusion…

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Q: How many grams of Al203 are formed from 15.0L of 02 at 97.3 kPa and 21 degrees C according to the…

A: 113.96 grams of Al2O3 will form.

Q: What is the molar mass of an unknown gas that diffuses at a rate of 83.3 mL/s in a diffusion…

A: Given data,Diffusion rate for unknown gas (Rate1)=83.3mL/sDiffusion rate for CO2(Rate2)=102mL/smolar…

Q: Consider the following two virial equations of state.  Z = 1 + 2B’ p + 3 C’ p2 + D’ p3 + E’ p4 +…

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Q: In order to determine the rate of photosynthesis (the conversion by plants of carbon dioxide and…

A: Given, Temperature, T = 293 K Total pressure, Ptotal = 757.0 mmHg Volume of O2 gas collected, V =…

Q: o gases were mixed into a 5.000L container at 291.0 K. Gas A was originally confined in 14.20 L at…

A: Ideal gas is also called a perfect gas. Ideal gas is a gas in which pressure P, volume V and…

Q: A living room has floor dimensions of 3.5 m and 4.2 m and a height of 2.4 m. a. What does the air in…

A: Given: Dimensions of the room = 3.5 m × 4.2 m × 2.4 m And the pressure of air = 1.0 atm.

Q: By what factor would a scuba diver's lungs expand if she ascended rapidly to the surface from a…

A: Given: The depth of the surface is 134.5 ft The density of sea water is 1.01 g/mL The density of Hg…

Q: A cylinder measuring 1.9cm wide and 2.3cm high is filled with gas and the piston pushed down with a…

A: We knew that  Force = pressure × Area

Q: If carbon dioxide (CO2) requires 55.12 minutes to effuse through a small hole in its container, how…

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Q: The normal respiratory rate for a human being is 15 breaths per minute.  If the average volume of…

A: Given data-  Volume of air in each breathe (V) = 500mL Temperature (T) = 210C = 294K Pressure (P) =…

Q: If 150 grams of vinegar(HC2H3O2) react with eggshell at 641mmHg and16 o C, what will be the volume…

A: Formula of vinegar = HC2H3O2 Mass of vinegar = 150g  Molar mass of vinegar =…

Q: Gas bulb A has a volume of 6.00 dm3 and contains N2 gas at a pressure of 200 kPa. Gas bulb B has a…

A: Dalton's law of partial pressure states that the total partial pressure of the mixture is equal to…

Q: Suppose that a woman weighing 130 Ib and wearing high heeled shoes momentarily places all her weight…

A: Pressure is deefined as the force per unit area. Mathematically,

Q: Shrek is creating swamp gas traps to keep people out of his swamp, he is fictional so he does not…

A: Boyle's law At constant pressure, pressure of a gas varies inversely with volume. The equation is ;…

Q: What pressure, in atmospheres, is exerted on the body of a diver if she is 39 ft below the surface…

A: Pressure exerted by water is calculated as follows,

Q: Cylinders of compressed gas are typically filled to a pressure of 200 bar. For oxygen, what would be…

A: The effect of pressure and temperature is measured by Boyle’s law and Charles's law respectively.…

Q: How many kilograms of nitrogen will occupy a volume of 1000 m3 at a pressure of 1.2 bar and a…

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Q: A gas cylinder contains (6.9600x10^1) L of the gas argon when it is full. If the cylinder was at an…

A: Given: The pressure of the argon gas = 1.6700×103 kPa The volume of the argon gas = 6.9600×101 L The…

Q: Nitrogen dioxide, NO2, is a reddish-brown gas above 21.1°C and a brown liquid below 21.1°C. It is…

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Q: Ronan reacts copper metal with excess nitric acid. The reaction produces aqueous copper (II)…

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Q: we use Pv=nRT. Everything here should be related to H2 (g)    --> Chemical equation1Mg +2 HCl à…

A: To find: Percent error in measuring R,  theoretical value à 0.08206? Percent error of experiment…

Q: given these virial equations:  Z = 1 + 2B’ p + 3 C’ p2 + D’ p3 + E’ p4 + ….. Z = 1 + 4B (1/Vm) +…

A: According to ideal gas law, PV = RT where P = pressure Vm = molar volume R = gas constant = 0.0821…

Q: The mass of 3500 cm3 of a gas is 3.5g at 65°C and 66.64 kPa. Determine the molar mass of this…

A: Given that:  Volume of gas = 3500cm3 = 3500ml = 3500ml×1L/1000ml = 3.5L T = 65°C = 65°C+273 = 338K P…

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.