A gaseous hydrogen- and carbon-containing compound is decomposed and found to contain 82.66% carbon and 17.34% hydrogen by mass. The mass of 158 mL of the gas, measured at 556 mmHg and 25 °C, was 0.275 g. What is the molecular formula of the compound?

Q: if the density of an ideal gas at STP is found to be 1.96 g/L, what is the molar mass?

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Q: What mass of neon gas is required to fill a 5.00-L container to a pressure of 1.02 atm at 25 C?

A: Given that,      Volume of container, V = 5.00 L     Pressure of neon gas, P  = 1.02 atm…

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…

A:

Q: What is the density of a gas with a molar mass of 163 g/mol at 25C and 1.00 atm?

A: Given information: Molar mass = 163 g/mol Temperature (T) = 25 °C Pressure (P) = 1.00 atm

Q: What is the mass, in grams, of 13.88 L of nitrogen gas (N2: 28.00 g/mol) at STP?

A: Introduction: The gases which follows Charle’s law, Boyle's law, Gay-Lussac’s law, and Avogadro’s…

Q: Consider a 1.53-L sample of gaseous SO2 at a pressure of 5.6 x 103Pa. If the pressure is changed to…

A: At constant temperature: P1V1 = P2V2 P1 = initial pressure; V1 = initial volume; P2 = final pressure…

Q: Oxygen gas (O2) is collected over water at 21oC and a total pressure of 1.05 atm. What total volume…

A: The number of moles of oxygen gas can be calculated as follows-

Q: Calculate the number of grams of oxygen gas represented by a sample of a pure gas at 27oC, 715 mmHg,…

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Q: How many molecules are there in an ideal gas with a volume of 6.28 L at STP?

A: We have the ideal gas equation PV=nRT...................1 We know that, the ideal gas is at STP…

Q: A high altitude balloon is filled with 1.41 x 104 L of helium gas at temperature of 21 oC and 1.00…

A: For part a): According to Ideal gas equation: PV=nRT 1 x1.41 x 104 =n x 0.0820 x (273+21)…

Q: What is the density in g/L of Ar gas at STP?

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Q: 8. How many moles of argon atoms are present in 15.7 L of argon gas at STP?

A: Given values, at STP, Volume of Ar= 15.7 L  We know the molar volume at STP = 22.4L/mol

Q: Butane, C4H10, is used as a fuel for camping. If you have 108 mL of butane gas at 715 mmHg and 25…

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

Q: What is the mass in kilograms of 5.6 x 10^27 molecules of carbon tetraiodide? b) If there are 27…

A: Hello. Since more than one question has been asked, the first question shall only be answered in…

Q: 2. What mass of chlorine gas, Cl2 in grams, is contained in a 10.0 L tank at 27°C and 3.50 atm of…

A: Using ideal gas equation PV=nRT ,we can find mass of chlorine gas produce.

Q: What would be the molar mass of a gas for which 2.43 x 10-2g occupies a volume of 7.68 mL at STP?

A: Given that, volume of gas at STP, V = 7.68 mL = 0.00768 L Mass of gas at STP, m = 2.43×10-2 g Molar…

Q: What is the temperature, in degrees Celsius, of 2.50 moles of neon (Neon) gas confined to a volume…

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Q: What is the density of propane gas (CH3CH2CH3, 44.1 g/mol) at 25°C and 650 mmHg?

A: GivenTemperature = 25°C = 298KPressure = 650 mm of HgAssuming 1 mole of gas was there at STP, and…

Q: If a sample of helium gas at 900 torr and 25°C is allowed to expand from 2.6 L to 5.8 L without…

A: Helium exert a pressure of 403.45 torr.

Q: What is the pressure of 2.01 g of nitrogen gas confined to a volume of 0.205 L at 36 ∘C?

A: Given, Mass of nitrogen = 2.01g Volume = 0.205L Temperature  = 36 degree Celsius.

Q: When a 222.3 mL sample of nitrogen is kept at a constant temperature of 5.0 °C, it has a pressure of…

A: Given data, Initial volume (V1) = 222.3 mL = 0.2223 L Temperature = 5oC Initial pressure (P1) =…

Q: What is the mass of 5.8 L of NH3 at 300° K and a pressure of 761.0 mm Hg?

A: NH3 Volume = V = 5.8 L Temperature = T = 300 K Pressure = P = 761.0 mmHg ( We know ; 1 atm = 760…

Q: The partial pressures of CH 4, N 2, and O 2 in a sample of gas were found to be 135 mmHg, 508 mmHg,…

A: Given : Partial pressure of CH4 = 135 mm Hg Partial pressure of N2 = 508 mm Hg And partial pressure…

Q: A gas has the following elemental composition: C = 82.7%, H = 17.3% in mass. At stp (room…

A: Given, C = 82.7 % H = 17.3 %  Temperature = 0°C = 273 K Pressure = 760 mmHg = 1 atm Density = 2.496…

Q: What is the molecular weight of the gas?

A: Ideal gas equation :-  PV = nRT  P is the pressure of gas  V is the volume occupied by gas  n is the…

Q: What is the molar mass of a gas that has density 1.40 g/L at 760. mmHg and 273K?

A:

Q: If 8.00 g of gas occupies 11.2 L at 20 degrees Celsius and 0.25 atm, what is the molar mass of the…

A: Given data - mass = 8 g. Pressure = P = 0.25 atm. volume = V= 11.2 L = 0.0112 ml. gas constant = R =…

Q: What is the density of sulfur dioxide gas at 795 torr and 25 oC?

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Q: Cyclopropane, a gas once used with oxygen as a general anesthetic, is composed of 85.7% carbon and…

A: The ideal gas equation gives relation between pressure, temperature, volume and number of moles.…

Q: At what temperature will 19.4 g of molecular oxygen, O2, exert a pressure of 1820 mm Hg in a 5.12 L…

A:

Q: What is the total pressure in mmHg of a gas mixture containing: 0.25 atm of argon, 350 mmHg of He,…

A: Given:Pressure of He = 350 mmHg = 0.4605 atmPressure of Ar = 0.25 atm.Pressure of N2 = 0.47368421…

Q: In a mixture of helium and chlorine, occupying a volume of 12.8 L at 605.6 mmHg and 21.6oC, it is…

A: Given information:Volume = 12.8 LPartial pressure of chlorine = 143 mmHgPressure = 605.6…

Q: Calculate the density of Xenon gas at a pressure of 742 mmHg and a temperature of 450C. The molar…

A:

Q: At 618 mm Hg, a sample of nitrogen gas occupies 490 mL.  What volume does the gas occupy if the…

A: We know Boyle's Law states that, "The absolute pressure(P) exerted by a given mass of an ideal gas…

Q: 87.23 grams of a gas occupies 45 L at 600 mm Hg and 25 C. What is the molar mass of the gas ?

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

A: This problem will be solved using ideal gas equation which is given as PV= nRT  Where, P = pressure…

Q: Dinitrogen monoxide can be prepared by heating ammonium nitrate, which decomposes into dinitrogen…

A: At STP , Volume of 1 mol gas = 22.4 L  From this relation we can can convert the volume of gas into…

Q: What is the density of a sample of argon gas at 51 ∘C∘C and 871 mmHgmmHg?

A:

Q: If a sample of Argon gas occupies 2.50 L at 100.0 °C and 5.00 atm, what volume will it occupy at 0.0…

A: Ideal gases are those gases which follow ideal gas equation. The relation between pressure, volume,…

Q: What is the mass (in g) of a 28.2 L sample of carbon dioxide gas at a temperature of 30.0 oC and a…

A:

Q: A sample of gas of mass 3.22 g  occupies a volume of 442 mL  at 58 oC  and 0.18 atm  pressure. What…

A: The gaseous state is the state of matter with least intermolecular force of attraction between…

Q: What is the molar mass of a gas if 0.282 g of the gas occupies a volume of 250 mL at a temperature…

A:

Q: The alkali metals [Group 1A(1)] react with the halogens to formionic metal halides. What mass of…

A: The given data contains, Volume = 5.25 L Pressure = 0.950 atm Temperature = 293 K Gas constant…

Q: Assuming that a 800 mg gas occupying a volume of 1,100 ml at a pressure of 1,600 mmHg and a…

A: Volume = 1100ml = 1.1L  Pressure = 1600 mmHg = 2.1052 atm  T = 75oC =  75 + 273K = 348K  Gas…

Q: If 1.27 g Ar are added to 1.17 atm He in a 2.00 L cylinder at 27.0 °C, what is the total pressure of…

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Q: What is the pressure of a 8.0 g sample of nitrogen gas at 25 degress celcius in a closed 500 mL…

A:

Q: If 425 L of a gas at 1.00 atm and 25° C is compressed into a 35.0 L tank at the same temperature,…

A:

Q: In an experiment, 175 mL of nitrogen gas was collected over water at 23.5 oC and 757 mmHg. What mass…

A: Given,175 mL of nitrogen gas was collected over water at 23.5oC and 757 mmHg.The vapour pressure of…

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.