A 0.0125-g sample of a gas with an empirical formula of CHF2 is placed in a 165-mL flask. It has a pressure of 13.7 mm Hg at 22.5 °C. What is the molecular formula of the compound?

Q: ne air bags in automobilles were once Inflated by hitrogen gas generated by the rapid decomposition…

A: Equation is  2NaN3(s) —> 2Na(s) + 3 N2(g)  we have to find the no. of moles of N2 by formula PV =…

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

A: Given: Mass of propane is 1g. Temperature of the burner is 210.0°C. The pressure is 1.05 atm. The…

Q: Carbon monoxide gas reacts with hydrogen gas to form methanol. CO(g) + 2 H2(g) – CH;OH(g) A 1.50-L…

A: The number of mole of a substance is calculated by dividing the mass (m) of the substance by its…

Q: An ideal gas in a sealed container has an initial volume of 2.55 L.2.55 L. At constant pressure, it…

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Q: In the mixture of gas in the container, there are three gases: Ne, Ar and Xe. Upon analysis, 4.46…

A: Give  Gas              Number of mole  Ne                  4.46  Ar                   0.74 Xe…

Q: A mixture of 3.0 g H2(g) and 12.0 g He(g) in a 7.0 L flask is maintained at 0 ∘C. What is the total…

A: According to ideal gas law, PV = nRT where P = total pressure of gas mixture V = volume = 7 L n =…

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: The gas of a certain volcano had the following composition in mole percent: 60.0% CO2, 28.0% H2,…

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

Q: A sample of an ideal gas at 1.00 atm1.00 atm and a volume of 1.28 L1.28 L was placed in a weighted…

A: according to boyl's law at constant temperature pressure is inversely proportional to volume

Q: 11. Synthesis gas, which is used in the production of ammonia and methanol, among other uses, is…

A: Since PV = nRT  where P = pressure in atm V = volume in L  n = moles  R =  0.0821  T = temperature…

Q: A sample of gas at 1009.8 mmHg, occupying a volume of 12.49 L, and at a temperature of 26.20 °C is…

A: For the phase change of the ideal gas the temperature, pressure, and volume of the initial state and…

Q: A 1.00 L flask is filled with 2.00 mol Ar, 2.00 mol H2 and 4.00 mol Kr. Which of the following…

A: Given data, Volume of flask = 1.0L Moles of H2 = 2.00 moles Moles of Ar = 2.00 moles Moles of Kr =…

Q: 5. A mixture of gases contains 10.25g of F2, 2.83g of H₂, and 5.95g of CO₂. If the total pressure of…

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Q: An ideal gas is contained in a cylinder with a volume of 5.0 X 102 mL at a temperature of 30.°C and…

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Q: A xenon fluoride can be prepared by heating a mixture of Xe and F2 gases to a high temperature in a…

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Q: Calculate the density (in g/L) of Freon-12, CF2Cl2, at 32.2°C and 0.968 atm.

A: Since you have posted multiple questions, we are entitled to answer the first only.

Q: A 40.0 g sample of potassium metal is allowed to react with excess hydrochloric acid to produce H2…

A: First we would Calculate moles of Hydrogen gas produced and using ideal gas law we would Calculate…

Q: In a sealed 250-mL vessel, 0.31 moles of NO and 0.76 moles of O2 are added. The combined gas…

A: The partial pressure of any gas is the product of mole fraction of that gas with total pressure of…

Q: A piece of magnesium reacts with an aqueous solution of HCl to produce H2 gas. The hydrogen gas is…

A: The ideal gas equation is shown below: PV = nRT Where; P = pressure of the gas V= volume of the gas…

Q: Xenon fluoride can be prepared by heating a mixture of Xe and F2 gases to a high temperature in a…

A: Dalton's law of partial pressure states that the total pressure equals to the sum of the partial…

Q: For many purposes we can treat butane (C4H10) as an ideal gas at temperatures above its boiling…

A: The mass of butane gas = The boiling point of butane gas = The initial temperature = The pressure of…

Q: Three gases (8.00 g of methane, CH4, 18.0 g of ethane, C2H6, and an unknown amount of propane, C3H3)…

A: Given: The volume of the container, (V)=10 L. The temperature of the container, (T)=230C=(23+273.15)…

Q: According to the following reaction: MnOz+ 4 HCl MnClz+ Clz+ 2H,O If 12.2 g of MnO2 were reacted…

A: Given information: Mass of MnO2 = 12.2 g Volume of HCl = 70.0 mL Molarity of HCl = 2.50 M

Q: Q7. A gas mixture that has the following composition in percent by volume: 10.2% CO2, 21.0% CO,…

A: Solution -

Q: A gas mixture contains 2.9 moles of hydrogen, 8.9 moles of carbon dioxide, and 2.7 moles of nitrogen…

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Q: A sample of argon gas occupies a volume of 9.60 L at 53.0°C and 0.850 atm. If it is desired to…

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Q: A sample of gas at 9.18.5 mmHg occupying a volume of 13,02 L is transferred to a larger container of…

A: Given : Initial Pressure (P1) = 9.185mmHg 1 mmHg = 0.133322KPa Therefore, 9.185mmHg = 1.2245661KPa…

Q: a gas mixture contains sulfur hexaflouride at a pressure of 2.64 atms and diphosphorus pentoxide at…

A: given, A gas mixture contains sulfur hexafluoride at a pressure of 2.64 atm and diphosphorus…

Q: When 0.1 mol of HCl gas is placed in a 10 liter box at 25 degree C, the pressure is about the same…

A: Explanation: when NH3 and HCl are mixed we get the product ammonium chloride (NH4Cl) NH3 + HCl…

Q: An ideal gas in a sealed container has an initial volume of 2.65 L.2.65 L. At constant pressure, it…

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

A: The volume of ammonia gas= 830 ml (Constant) Initial temperature, T1= 11.00°C = (11+273) = 284 K

Q: The label on a cylinder of a noble gas became illegible, so a student allowed some of the gas to…

A:

Q: At 5°C a 1.0-L flask contains 4.0 x 10-2 mole of N2, 4.0 × 10² mg O2, and 2.5 x 1021 molecules of…

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.