A weather balloon contains 8.72 moles of helium at a pressure of 0.998 atm and a temperature of 25°C at ground level. What is the volume (in L) of the balloon under these conditions?

Q: A 1.00-L flask at 23 °C contains 0.0388 mol of N2, 0.147 mol of CO, and 0.0803 mol of H2. What is…

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Q: In an experiment in a general chemistry laboratory, a student collected a sample of a gas over…

A: The ideal gas equation is given by,                                                PV = nRT Where, P…

Q: In a sealed container, 230.0 L of air was collected at 50.0°C and 652 mmHg. The mole fraction of…

A: Given data,Volume(V) of air=230.0LTemperature(T)=50oC=50+273.15=323.15KPressure of…

Q: A 16.3 L sample of neon at 25.0°C and a pressure of 745 torr is kept at 25.0°C as it is allowed to…

A: Given :-  Initial pressure =745 torr Initial volume = 16.3 L Final volume = 21.2 L  Temperature =…

Q: A mixture of carbon dioxide and helium gases, in a 7.15 L flask at 50 °C, contains 13.4 grams of…

A: We can use ideal gas equation to calculate the partial pressure of each gas. The ideal gas equation…

Q: In a 2.29 L flask, there are two gases (gas 1 and gas 2). There is 2.13 L of gas 1, with 3.7 bars of…

A: In order to find the final pressure of the gas mixture, we need to use the Ideal Gas Law, which…

Q: A gas mixture contains O2, N2, and Ar at partial pressures of 125, 175, and 225 mmHg, respectively.…

A: The partial pressure of carbon dioxide in milliliters of mercury has to be calculated.

Q: A sealed container contains argon, xenon, and helium gases. If the total pressure of the mixture is…

A: Dalton's law: Dalton's law of partial pressures states that in a mixture of non-reacting gases, the…

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: What is the mass of chlorine gas present in 17.0 L at a pressure of 98.5 kPa and a temperature of 13…

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Q: A mixture of argon and helium gases is maintained in a 9.63 L flask at a pressure of 2.57 atm and a…

A: Ideal gas equation: where, P= pressure of the gas V= volume of the gas n=number of moles of the gas…

Q: 8.00 gram mixture of copper (II) sulfide and iron (II) sulfide reacted with excess nitric acid and…

A: Given the mass of mixture = 8.00 g composition of mixture is copper (II) sulfide, CuS(s) and iron…

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: A helium-filled weather balloon has a volume of 584 L at 16.9°C and 755 mmHg. It is released and…

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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: 5. A reaction yields 5.0 L of nitrogen monoxide. The volume is measured at 20°C and at a pressure of…

A: Ideal gases are hypothetical gases which do have real existence. A gas can behave ideally at low…

Q: A mixture of helium and argon gases is maintained in a 9.15 L flask at a pressure of 3.19 atm and a…

A: Given that Pressure of gas mixture = P = 3.19 atm Volume  = 9.15L Temperature of gas = 38°C =…

Q: A 0.271 g sample of He(g) is placed in a balloon at 22.0 °C and a pressure of 754 mm Hg. What is the…

A: This question is based on ideal gas Equation. PV = nRT Where, P - pressure V- Volume n = no of moles…

Q: 5. A reaction yields 3.0 L of nitrogen gas. The volume is measured at 119°C and at a pressure of…

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Q: The mass of an evacuated 260 mL flask is 143.217 g. The mass of the flask filled with 268 torr of an…

A: The objective of this question is to calculate the molar mass of an unknown gas given the mass of an…

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

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Q: A high altitude balloon is filled with 1.66 x 104 L of hydrogen at a temperature of 32 °C and a…

A: Given, Initially, Pressure (P1) = 709 torr = 0.933 atm Volume (V1) = 1.66 × 104 L Temperature (T1) =…

Q: A mixture of oxygen and neon gases is maintained in a 5.98 L flask at a pressure of 2.08 atm and a…

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Q: volume of the balloon at this altitude is  L. A sample of nitrogen gas occupies a volume of 6.89 L…

A: 1) Using state equation, P1V1/T1 = P2V2/T2 754×731/296.9 = 641×V2/282.9 V2 =819L

Q: An unknown gas in a balloon weighs 73.53 g. The balloon occupies 20.00 L at 22.0 °C and 1056 mm Hg.…

A: Given the mass of gas =73.53 gvolume of gas =20.00 Ltemperature =22.0 °C =(22+273) K =295 Kpressure…

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: partial pressure

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Q: A mixture of xenon and argon gases, in a 5.91 L flask at 13 °C, contains 43.3 grams of xenon and…

A: Given : 43.3 grams of xenon3.83 grams of argonVolume  = 5.91 LTemperature is at 13 °C = 286.15KTo…

Q: a sample of a gaseous nitrogen oxide is found to weigh 0.525g. the sample has a volume of 300 mL at…

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Q: A gaseous compound containing 62.45% chlorine and 37.55% nitrogen by mass are held at standard…

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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: 233 mL nitrogen gas reacts with 583 mL hydrogen gas. Both gases are at the same temperature and…

A: It is given that 233 mL of nitrogen is reacting with 583 mL of hydrogen gas at the same temperature…

Q: A high altitude balloon is filled with 1.82 × 104 L of hydrogen at a temperature of 34 °C and a…

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Q: 3.55 g sample of an unknown gas at 33 degrees Celcius and 1.10 atm is stored in a 2.55 L flask. What…

A: The density of the gas present in the flask can be calculated by diving its mass by volume.

Q: If the temperature of 179.6 L of a gas at 64.9 C falls by 7.2 C, what is the new volume of the gas…

A: We know, at constant pressure; V1 / T1 = V2 / T2 where, V1 = initial volume T1 = initial temperature…

Q: A helium-filled weather balloon has a volume of 655 L at14.9°C and 757mmHg. It is released and rises…

A: Since you have posted multiple questions, we will provide the solution only to the first question as…

Q: A mixture of neon and argon gases is maintained in a 7.63 L flask at a pressure of 3.55 atm and a…

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Q: A mixture of krypton and methane gases is maintained in a 6.32 L flask at a pressure of 3.01 atm and…

A: Total number of moles present in the mixture can be calculated using Ideal gas equation as follows,

Q: A student collects 122. mL of hydrogen gas at 23.8 °C. The pressure of the hydrogen gas was…

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Q: A mixture of xenon and argon gases, in a 9.94 L flask at 74 °C, contains 23.9 grams of xenon and…

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Q: A.) What volume would 10.0g of chlorine gas occupy at 30*C and 1.10atm? B.) 2.50 L of gas at a…

A: The ideal gas equation is used to establish how many moles, molar mass, weight, pressure, and volume…

Q: If the pressure exerted by a gas at 25.0oC in a volume of 0.0440 L is 3.81 atm, how many moles of…

A: The ideal gas law equation relates the pressure, volume, number of moles and the temperature…

Q: What is the molar mass of the gas?

A: Given, Temperature = 0°C =273.15 KVolume = 426 mL = 0.426 LPressure = 1 atm Gas Law: PV = nRTP = mM…

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)  =…

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.