A helium-filled balloon used in long-distance flying contains 420,000 ft3 (1.2  107 L) of helium. Suppose you fill the balloon with helium on the ground, where the pressure is 737 mm Hg and the temperature is 24 °C. When the balloon ascends to a height of 2 miles, where the pressure is only 600.0 mm Hg and the temperature is – 33 °C, what volume is occupied by the helium gas? Assume that the pressure inside the balloon matches the external pressure.

Q: You have 917. mL of chlorine trifluoride gas at 737. mmHg and 29. °C. What is the mass (in g) of the…

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Q: There are 101.0 g of chlorine gas (Cl2) and 26.0 g of helium (He) mixed in a container with a total…

A:

Q: You are trying to determine, by experiment, the formula of a gaseous hydrofluorocarbon compound you…

A: The objective of the question is to calculateThe molar mass of the compoundThe molecular formula

Q: A sample of an ideal gas at 1.00 atm and a volume of 1.91 L was placed in a weighted balloon and…

A: We have given that initial Pressure (P1) = 1 atm Volume (V1) = 1.91 L And after dropping into the…

Q: A helium-filled balloon of the type used in long-distance flying contains 560,000 ft^3  (1.6x10^7 L)…

A:

Q: A 6.75 g sample of potassium chlorate (KClO4) is heated and decomposes into potassium chloride and…

A: Using Dalton's law of partial pressure to fins oxygen's partial pressurePtotal = PO2 + PH2O    and…

Q: For many purposes we can treat nitrogen  N2  as an ideal gas at temperatures above its boiling…

A: Answer:When number of moles of a gas is constant then equation of state for a gas sample is:Here:

Q: In a laboratory where gases are being collected, the atmospheric pressure is 753.5 mm Hg, and the…

A: In a laboratory where gases are being collected, the atmospheric pressure is 753.5 mm Hg, and the…

Q: A sample of an ideal gas at 1.00 atm1.00 atm and a volume of 1.53 L1.53 L was placed in a weighted…

A:

Q: A 0.6333 g sample of a metal carbonate was reacted with hydrochloric acid. The carbon dioxide gas…

A: Given data, Mass of sample = 0.6333 g temperature = 26.0oC Volume of gas over water = 103.80 kPa…

Q: If 6.90 L of gaseous ethanol reacts with 17.2 L O2, what is the maximum volume of gaseous carbon…

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Q: 2Na(s) + 2H2O(1)→2NaOH(aq) +H2(g) The product gas, H2, is collected over water at a temperature of…

A:

Q: A sample of 257.0 mL of wet nitrogen gas was collected over water at a total pressure of 759 torr…

A:

Q: Oxygen gas can be prepared by heating potassium chlorate according to the following equation:…

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Q: Two separate flasks are each filled with a gas at 25.0°C; the valve between them is opened and the…

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Q: A 0.6333 g sample of a metal carbonate was reacted with hydrochloric acid. The carbon dioxide gas…

A: We have given that the CO2 is collected at temperature of 26.0°C T = 26 + 273.15 = 299.15 K…

Q: A sample of sulfur hexafluoride gas occupies 9.10 L at 198 °C.  Assuming that the pressure remains…

A:

Q: What is the mass of neon that exerts a pressure of 720. mmHg, with a temperature of -15.0 °C, when…

A: Neon is an ideal gas. To get the mass of neon, use ideal gas equation. Ideal gas equation…

Q: Suppose 10.05 mol of Ar gas are pumped into a 1.41  L container at 293.15  K. Calculate the expected…

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Q: The volume of a sample of pure HCI gas was 239 mL at 24°C and 177 mmHg. It was completely dissolved…

A: Given that, Volume of HCl gas =239mL = 0.239LPressure  P = 177 mmHg *                     = 0.233…

Q: A sample of an ideal gas at 1.00 atm and a volume of 1.11 L was placed in a weighted balloon and…

A: Volume of sample, V= 0.0444 L

Q: A sample of nitrogen gas kept in a container of volume 2.40 L and at a temperature of 27. °C exerts…

A: Ideal gas equation is  PV = nRT  Where,  P is pressure of the gas  V is volume of the gas n is no.…

Q: what was the volume of the sample?

A: According to the Boyle's Law ; at constant temperature the pressure exerted by an ideal gas is…

Q: Sodium metal reacts with chlorine gas to form NaCl. A closed container of volume 3.00 x 103 mL…

A:

Q: A volume of 0.70 L of air at 37 ° C is expelled from the lungs into cold surroundings at  4.9 ° C.…

A: Given V1 = 0.7 L T1 = 37°C = 37+273 = 310°K V2 = T2 = 4.9°C = 273+4.9 = 277.9°K

Q: Oxygen is a product of the decomposition of mercury(II) oxide as shown below. 2 HgO(s) → 2 Hg(l) +…

A: The reaction Moles of O2 (g) = Mass of HgO = 4.10 gPressure = 1.50 atmTemperature = 122.0 °CGas…

Q: A sample of oxygen gas was collected over water at a barometric pressure of 757.2 mm Hg and a…

A:

Q: For many purposes we can treat ammonia (NH3) as an ideal gas at temperatures above its boiling point…

A:

Q: A sample of an unknown compound is vaporized at 100. °C. The gas produced has a volume of 1840. mL…

A: Answer:Here:

Q: A student collects a sample of hydrogen gas, which has a volume of 350 cm^3 at 22.0 degrees celcius.…

A:

Q: A sample of an unknown compound is vaporized at 170. °c. The gas produced has a volume of 870. mL at…

A: To solve this problem we have to calculate the molar mass of the given compound.

Q: For many purposes we can treat ammonia (NH3) as an ideal gas at temperatures above its boiling point…

A:

Q: A sample of an ideal gas at 1.00 atm and a volume of 1.89 L was placed in a weighted balloon and…

A: We have to use the Boyle's law in order to calculate the final volume as it is given temperature is…

Q: A sample of an ideal gas at 1.00 atm and a volume of 1.90 L was placed in a weighted balloon and…

A: Interpretation -  To detrmine the volume of the sample when pressure is increased to 80 atm of a…

Q: The flame produced by the burner of a gas (propane) grill is a pale blue color when enough air mixes…

A: The balanced chemical equation for the combustion of propane is  C3H8 + 5 O2 →3 CO2 + 4 H2O

Q: For many purposes we can treat ammonia (NH3) as an ideal gas at temperatures above its boiling point…

A: Answer:For a fixed mass of gas, value of  for any gas sample remains constant, therefore,

Q: For many purposes we can treat dimethyl ether (C₂H5O) as an ideal gas at temperatures above its…

A: Boiling point = -24 oCInitial temperature = -11 oC

Q: For many purposes we can treat nitrogen (N₂) as an ideal gas at temperatures above its boiling point…

A: We can solve this question by using ideal gas equation i.e. PV= n RT whereP = pressure of gas, V =…

Q: A 3.19-g mixture of solid CaO and solid ZnO is reacted in a 2.00-L container with CO2(g) at a…

A: The chemical reactions taking place are: CaO(s)+CO2(g)→CaCO3  (s)-----1ZnO(s)+CO2(g)→ZnCO3(s)…

Q: Calculate the number of moles of carbon dioxide gas present in a 1.50 L flask at STP.   A sample…

A: We need to know some basic factsVolume of 1 mole of an ideal gas at STP is 22.4 LIf number of moles…

Q: An ideal gas is contained in a cylinder with a volume of 5.1*10^2 mL at a temperature of 30.°C and a…

A: An ideal gas has negligible volume in compare to volume of the container, and the molecules of ideal…

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.