A 0.33 g sample of organic acid is vaporized in a sealed 300.0 mL container at 150oC and the resulting pressure is 326 torr. What is the molecular weight of acid? Group of answer choices A, 78.0 B, 84 C, 89 D, 102

Q: Cyclopropane, a gas used with oxygen as a general anesthetic,is composed of 85.7% C and 14.3% H by…

A: The chemical formula of alkane is CnH2n+2. Number of moles can be determined using,

Q: A sample of a gas in an 11.2L11.2L container is at 1.0atm1.0atm and 0°C0°C, as shown. The mass of…

A: Given :  Volume = 11.2 L  Pressure = 1 atm  Temperature = 0°C = 273 K  Mass of sample = 16 g

Q: A sample of a liquid hydrocarbon known to consist of molecules with five carbon atoms is vaporized…

A: The combination of Boyle's , Charles's and Avogadro's law leads to an equation which gives the…

Q: At 27 °C, 500 cc of H2, measured under a pressure 400 torr, and 1000 cc of N2, measured under a…

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Q: Chlorofluorocarbons (CFC's) are gases that were formerly widely used in aerosols and refrigerators…

A: Given: Mass of CFC = 2.50 g. Temperature = 22 oC Pressure = 1.02 atm. And volume of flask = 500 mL =…

Q: A sample of phosphorus that weighs 3.243 × 10−2 g exerts a pressure of 31.89 kPa in a 56.0-mL bulb…

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Q: Chlorofluorocarbons (CFC's) are gases that were formerly widely used in acrosols and refrigerators…

A: Given: Mass of CFC = 2.50 g. Temperature = 22 oC Pressure = 1.02 atm. And volume of flask = 500 mL =…

Q: A large portion of metabolic energy arises from the biological combustion of glucose:…

A: Given mass of glucose = 20 g molar mass of glucose = 180 g/mole Temperature : T=37°C=(37+273) K=310…

Q: 10(b) A certain sample of a gas has a volume of 20.00 dm3 at 0 °C and 1.000 atm. A plot of the…

A: According to the plot of the experimental data, volume is linearly proportional to temperature, θ in…

Q: mass

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Q: A mixture of calcium carbonate, CaCO3, and barium carbonate, BaCO3, weighing 5.40 g reacts fully…

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Q: A compound is found to contain 12.8% C, 2.12% H, and 85.1% Br, If one liter of the gas(measured at…

A: 1 L of the gas has a mass of 8.38 g, so 22.4 L would have a mass of 188 g (3 significant figures).…

Q: A 2.50 g sample of an unknown gas occupies 875 mL at 685 mm Hg and 35 degrees Celcius. What is the…

A: Given: mass of gas = 2.50 g Volume of gas = 875 mL = 0.875 L pressure of gas = 685 mmHg = 0.9013 atm…

Q: A sample of gas has a volume of 215 cm³ at 23.5 °C and 84.6 kPa. What volume will the gas occupy at…

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Q: 1. A sample of gas weighs 3.10 g and occupies a volume of 1,272 mL at 30 °C and 720 mm Hg. What is…

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

Q: What volume of O2 measured at 1.86 × 106Pa and 375k, is required to react entirely with 1.78 liters…

A: At same temperature and pressure, volume of gas is directly proportional to number of moles of…

Q: Magnesium and aluminum react with excess hydrochloric acid to give hydrogen gas. What volume of…

A: Given : Mass percent of Al = 80 % Mass percent of Mg = 20 % And mass of alloy = 4.00 g The mass of…

Q: 0. At what temperature in Kelvin will 0.730 moles of oxygen gas occupy 6.50 L and exert 2.90 atm of…

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Q: An underwater research station with a volume of 2.00x107 L needs a delivery of air that completely…

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Q: What volume does 15.0g sample of helium (He) gas at 25C and 1.66 atm occupy?

A: Calculate the number of moles of He gas nHe = WHeMHenHe = 154 molnHe = 3.75 mol   Here, n stands for…

Q: A cylinder, with a piston pressing down with a constant pressure, is filled with 2.00 mole of a gas…

A: Given :  Initial number of moles = n1 = 2.00 mole Initial volume                 = V1 = 45.0 L…

Q: Three glass bulbs, joined by closed stopcocks, have the following volumes and initial pressures of…

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Q: At constant pressure, the mean free path 1l2 of a gas moleculeis directly proportional to…

A: Let the mean free path be ƛ, temperature be T, Pressure be P and diameter be d. At constant…

Q: The build-up of excess carbon dioxide in the air of a submerged submarine is prevented by reacting…

A: Ideal gas equation is given by, PV=nRT where P is the pressure, V is the volume, n is the number of…

Q: many gases are shipped in high pressure containers.consider a steel tank whose volume is 55.0…

A: The unit of volume and temperature should be converted to liter and Kelvin respectively.

Q: Pantothenic acid is a vitamin. Using the Dumas method, you find that a sample weighing 81.6 mg gives…

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Q: 1.A sample of unknown gas weighs 2.85 g and occupies 750 mL at 760 mmHg and 100°C. What is the molar…

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Q: Concentrated hydrogen peroxide solutions are explosively decomposed by traces of transition metal…

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Q: A gas occupies 40.5 L at 70.0 ⁰C and 25.0 kPa. What volume will it occupy at STP (101.3 kPa, 273 K)?

A: Volume can be calculated from combined gas law: P1V1/T1 = P2V2/T2  P1 = 25.0 kPa V1 = 40.5L T1 =…

Q: A sample of dry gas weighing 3.1134 grams is found to occupy 3.650 L at 22.0°C and 740.0 mmHg. How…

A: We have to predict the moles of the gas .

Q: In an N2 atmosphere, what temperature would a hot air balloon need to be to achieve neutral buoyancy…

A: Answer  Given that The buoyant force is equal to the weight of the displaced air

Q: 5. At conditions of 104.7 kpa of pressure and 15°C temperature, a gas occupies a volume of | 45.5…

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Q: A meteorological balloon contains 206 L He at 26.6oC and 733 mm Hg. If the volume of the balloon can…

A: Initial volume = 206 L  Initial temperature = 26.6 °C ..Or  because  °C + 273 = k   ..so, 26.6 °C +…

Q: 5. A certain mass of oxygen was collected over water when potassium chlorate was decomposed by…

A: When a gas is collected over water some water vapors are also present along with the gas. In such…

Q: A sample of nitrogen occupies 9.5 liters at 32 oC and 85.7 kPa. What would be the volume at 20 oC…

A: We can use the gas equation to calculate the volume of the gas at a different temperature and…

Q: A binary mixture of gases A and B contained 0.515 g of A (100.0 g/mol) at a total pressure of 1825…

A: We know that, PV = nRT  Given, pressure P = 1825 torr =  Volume V = 362.2 ml = 0.3622 L Temperature…

Q: "A mixture of gases contains 0.745 moles of N2, 0.315 moles of 02, and 0.153 moles of CO2. What will…

A: Given data is as follows: The number of moles of N2 = 0.745 moles The number of moles of O2 = 0.315…

Q: A gas occupies 28.5 L at 80.0 kPa and 25.0 ⁰C. What volume will it occupy at STP (101.3 kPa, 273 K)?

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

Q: What volume of O2(g) measured at 25 °C and 760 torr is required to react with 17.0 L of ethylene,…

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Q: Gaseous ammonia reacts with nitrogen monoxide gas to produce nitrogen gas and water vapor. (a) Write…

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Q: A 3.75 L sample of gas from a chemical plant is collected and analyzed st 25 degrees celisus. It is…

A: The number of moles for a given chemical species refers to the ratio of mass of the species to that…

Q: A compound which is 39.9 % C, 13.5 % H, and 46.6 % N by mass was studied.  A 0.378 g sample of the…

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Q: 1. A gas X, effuses 0.629 times as fast as O2 (g) under the same condition. What is the molecular…

A: Rate of effusion of gas of fluorine and chlorine gas can be expressed by Graham's law of effusion.

Q: There is 2.878 x 10-4 mol of an unidentified gaseous substance effuses through a tiny hole in 98.9…

A: Effusion is the process by which any gaseous substance is escaped from a large system through a tiny…

Q: A 5.00 mol sample of oxygen gas is confined to a pressure of 5atm at a temperature of 27degrees…

A: Given  O2 gas Moles of O2 gas, n = 5.00 mol Pressure of O2 gas , P = 5 atm Temperature of O2 gas , T…

Q: 1. A chemist collects 372 cm³ of gas over water at 90°C and 111.0 kPa. What volume would the dry gas…

A: Note : As per our guidelines we are supposed to answer only one question. Please repost the…

Q: 6. A certain mass of oxygen was collected over water when potassium chlorate was decomposed by…

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Q: Calcium carbide (CaC2) reacts with water to produce acetylene (C,H2), according to the following…

A: Given data contains, Volume V1 is 64.5 L. Temperature T1 is 50°C 323.15 K. Temperature T2 is…

Q: A hyperbaric chamber has a volume of 1450 LL. How many kilograms of O2O2 gas are needed to give an…

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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.