A balloon is filled with helium until the volume at a pressure of 1.00 atm is 2.0x104  L. temperature = 300 K. The helium is stored in pressurized cylinders each with a volume of 50.00 L and a He pressure of 150 atm at 300 K. How many cylinders are needed to fill the balloon (The He in the last cylinder may not be used up completely.)?

Q: A child's balloon is filled with helium to a volume of 1.299L on a hot 36.2°C day in San Diego,…

A: Given, Initially, Pressure  (P1) = 0.996 atm Volume (V1) = 1.299 L Temperature (T1) = 36.2°C = (36.2…

Q: 138. You have two rigid gas cylinders. Gas cylinder A has a volume of 48.2 L and contains N2(g) at…

A: Given:Volume of gas (VN2) = 48.2 L.Pressure of gas (PN2) = 8.35 atm.Temperature of gas (TN2) = 25℃ =…

Q: A balloon containing 2.14 L of SF6 at a pressure of 464 mmHg is dropped from an airplane. It is a…

A: Given :- initial pressure = 464 mm Hg  Final pressure = 696 mm Hg  Initial volume = 2.14 L  To…

Q: A weather balloon contains 8.4 moles of helium at a pressure of 0.938 atm and a temperature of 25 °C…

A: Given the number of moles of He gas (n) = 8.4 mol The pressure of He gas in the balloon (P) = 0.938…

Q: Sometimes in lab we collect the gas formed by a chemical reaction over water. This makes it easy to…

A: Given: Temperature = 35.0 oC. Volume of gas = 39.5 mL = 0.0395 L

Q: A 285-mL flask contains pure helium at a pressure of 743 torr A second flask with a volume of 470 mL…

A:

Q: To what temperature in K must a variable volume container of helium gas be cooled to obtain a final…

A: Initial volume Initial temperature Final volume Final temperature

Q: A mixture of methane and neon gases, in a 5.79 L flask at 55 °C, contains 4.14 grams of methane and…

A: Given  Volume ( V ) = 5.79 Liter  Temperature ( T )  = 55 ℃                               = ( 55 +…

Q: A mixture of 34.23 moles of argon, 12.76 moles helium, 21.53 moles neon, and 42.33 moles krypton is…

A: Given : Volume of vessel = 2935.34 L Moles of Argon =  34.23 moles Moles of Helium= 12.76 moles…

Q: A high-altitude balloon contains 30.0 L of helium gas at 1.00 kPa. When the balloon moves to an…

A: Given data---> V1=30.0 L P1= 1.00 kPa P2= 25.0 kPa V2= ?

Q: A 7.45 L container holds a mixture of two gases at 41 °C. The partial pressures of gas A and gas B,…

A: We know that from Dalton's law of partial pressure, total pressure of a gas is the sum of individual…

Q: Yet another balloon is inflated to a volume of 434 cm3 using 0.141 moles of dry hydrogen gas.  An…

A: According to the Avogadro's law, under the same conditions of temperature and pressure, equal…

Q: A mixture of hydrogen and helium gases, in a 5.17 L flask at 36 °C, contains 0.390 grams of hydrogen…

A: Given, Volume of the flask (V) = 5.17 L Temperature (T) = 36°C = (36 + 273.15) K = 309.15 K Mass of…

Q: what is the final pressure in the vessel after the reaction goes to completion?

A: Given :  P4(g) + 6 Cl2(g) → 4 PCl3(g) Number of moles of P4 = 0.335 mol  Number of moles of Cl2 =…

Q: what was the original pressure of the gas?

A:

Q: A large balloon has an original volume of 1.0 m3 when it is released from the ground.  When the…

A:

Q: A 280-mL flask contains pure helium at a pressure of 748 torr. A second flask with a volume of 460…

A:

Q: A 280 mL flask contains pure helium at a pressure of 747 torr. A second 470 mL flask contains pure…

A: Given data, Volume of pure helium = 280 mL Pressure of pure helium = 747 torr Volume of pure argon =…

Q: A mixture of helium and methane gases, in a 9.24 L flask at 85 °C, contains 0.593 grams of helium…

A:

Q: A 275-mL flask contains pure helium at a pressure of 746 torr. A second flask with a volume of 475…

A: Total volume after the stopcock is opened. The total volume is 275 ml + 475 ml = 750 ml. Since the…

Q: The gas with an initial volume of 24.0 L at a pressure of 565 mmHg is compressed until the volume is…

A: Given,Initial volume of the gas = 24.0 LInitial pressure of the gas = 565 mm HgFinal volume of the…

Q: A balloon is filled to a volume of 1.50L with 3.00 moles of gas at 25 °C. With pressure and…

A: Given information is:  Volume of the ballon = 1.50L Number of moles of gas present initially =…

Q: A 2.00 L balloon is filled with helium gas at 21 °C and 1.00 atm of pressure. As the balloon rises,…

A: The ideal gas equation is given by,

Q: A certain mass of nitrogen gas occupies a volume of 3.91 L at a pressure of 9.80 atm. At what…

A:

Q: A mixture of neon and argon gases, in a 7.40L flask at 48 °C, contains 1.63 grams of neon and 11.1…

A: Given :-  mass of Neon = 1.63 g  mass of Argon = 11.1 g  volume = 7.40 L  temperature = 48°C  To be…

Q: A weather balloon containing 314.0 L of helium rises from sea level (1.03 atm) to 30,000 feet where…

A:

Q: Container A holds 737 mL737 mL of an ideal gas at 2.60 atm.2.60 atm. Container B holds 174 mL174 mL…

A: The total pressure is determined by using the following formula

Q: Yet another balloon is inflated to a volume of 434 cm³ using 0.141 moles of dry hydrogen gas. An…

A: Given, V1=434cm3 n1=0.141 moles  n2 =? V2=?

Q: Hydrogen gas, oxygen gas, and water vapor are collected in eudiometer. The eudiometer contains…

A:

Q: A 13.9-L tank is filled with H2  to a pressure of 190. atm. How many balloons (each 2.00 L) can be…

A: Since temperature of gas is not changed so according to ideal gas equation.…

Q: A 15.0 L15.0 L helium tank is pressurized to 27.0 atm.27.0 atm. When connected to this tank, a…

A: This problem can be solved using Boyle's law .  Which is given below as  P1 V1 = P2 V2  Where , P1…

Q: What is the new volume of the gas?

A:

Q: A 7.60 L container holds a mixture of two gasses at 51 degrees celsius. The partial pressures of gas…

A: The ideal gas equation can be written as: Here, P = pressure, V = volume of the container that…

Q: Since helium is lighter than air, it is difficult to measure the mass of a sample, so to find out…

A:

Q: If a balloon is filled with 4.56 moles of helium gas and then exposed to a pressure of 0.123 atm at…

A: Given: Moles of He  gas: 4.56 Pressure : 0.123 atm Temperature : 28 oC = 301 K

Q: A gas-filled weather balloon has a volume of 57.0 L at ground level, where the pressure is 751 mmHg…

A: This question is based on ideal gas equation. Ideal gas equation is PV=nRT

Q: Container A holds 712 mL712 mL of an ideal gas at 2.10 atm.2.10 atm. Container B holds 114 mL114 mL…

A:

Q: The air in a bicycle tire is bubbled through water and collected at 25oC.If the total volume of gas…

A:

Q: The volume of a balloon filled with He at 755 mmHg is expanded from 2.20 L to 6.60 L at a constant…

A: At constant temperature volumn of gas is inversely proportional to pressure.   This is know as…

Q: A sample of nitrogen gas in a container with a volume of 2.3 L and a temperature of 32° C exerts a…

A: We have ideal gas equation as PV= nRT ,where P is pressure , V= volume of gas , n= no of moles of…

Q: A sample of gas originally at 29.2°C and 1.847 atm pressure in a 5.53 L container is allowed to…

A: Q. GivenT1 = 29.2oC = 302.35 K (initial temperature of gas)P1= 1.847 atm (initial pressure of…

Q: 11. A weather balloon is filled with helium that occupies a volume of 5.00 x 104 L at 0.995 atm and…

A: Given,  Initial volume, V1 = 5.00x104 L  Initial pressure, P1 = 0.995 atm  Initial temperature, T1 =…

Q: A sample of gas with an initial volume of 29.4 L at a pressure of 720 mmHg and a temperature of 304…

A: Given data is as follows:     The initial volume of the gas V1 = 29.4 L The initial pressure of the…

Q: A sample of 0.400 L Ne initially at 1.181 atm and 240.ºC and a 0.150 L sample of O2 initially at…

A: According to ideal gas law, PV = nRT where P = pressure in atm V = volume in L n = moles R = gas…

Q: A balloon filled with 2.00 L of helium initially at 1.45 atm of pressure rises into the atmosphere.…

A: The objective of this question is to find the volume of the balloon just before it bursts. This can…

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.