A compound has the empirical formula CHCL. A 256-mL flask, at 373 K and 750. torr, contains 0.800 g of the gaseous compound. Give the molecular formula.

Q: In an experiment, hydrogen sulfide gas is collected in a 1.25 L flask at 21 degrees celsius and 758…

A: Given, Volume  = 1.25 L Temperature = 21°C = 21+273 = 294 K Pressure = 758 torr Mass of H2S = ?

Q: A compound has the empirical formula CHB.. A 256-mL flask, at 373 K and 750. torr, contains 1.53 g…

A:

Q: 0.8 g of a gas fills up a flask of 850 mL at 183.5 torr and 30˚C. The empirical formula of the gas…

A: The expression of ideal gas law is shown below: PV = nRT Where, P = pressure of the ideal gas V =…

Q: How many grams of water vapor would be required to occupy a 617 mL flask at 0.950 atm and 94.7…

A:

Q: Boron trifluoride gas is used in the manufacture of computer chips. Given that 1.505 g of the gas…

A: STP is defined as the standard temperature, pressure condition at which the temperature of the gas…

Q: A 20.0-L gas cylinder contains 4.80 g H2at 258C. What is the pressure of this gas?

A: Moles of H2 gas , n = mass molar mass = 4.802= 2.40 mol  Temperature , T = 258 + 273.15 = 531.15 K…

Q: Ammonia is an important fertilizer and industrial chemical. Suppose that a volume of 683 billion…

A: 1) Calculate the number moles of ammonia formed by using ideal gas equation. Ideal gas equation is:…

Q: A balloon is filled with a mixture of 1.18 g of carbon dioxide (44.01 g/mol) and 1.24 g of oxygen…

A: The molar mass of Cabon Dioxide =  44.01 g/mol The molar mass of Oxygen = 32.00 g/mol V = 1.17L  T =…

Q: A 0.704-g sample of a colorless liquid was vaporized in an evacuated 250.-mL flask at 121°C to give…

A: Given information: Mass of sample = 0.704 g Pressure (p) = 786 mmHg Volume (V) = 250 mL Temperature…

Q: compound has the empirical formula CHI . A 256-mL flask, at 373 K and 750. torr, contains 2.31 g of…

A:

Q: Calculate the molecular weight (mass) of a gaseous element if 0.480 g of the gas occupies 367 mL at…

A: Given,  Mass of the element = 0.480 g  Volume, V = 367 mL = (367/1000) = 0.367 L  Pressure, P = 365…

Q: A compound has the empirical formula CHCI. A 256-mL flask, at 373 K and 750. torr, contains 0.800 g…

A:

Q: A sample of xenon gas occupies a volume of 9.01 L at 477 K. If the pressure remains constant, at…

A:

Q: A sample of nitrogen occupies 750 mL at 24 degrees Celsius at 595 torr. At what temperature ( in…

A:

Q: The density of a gaseous compound was found to be 1.23 g/L at 330 K and 150 Torr. What is the molar…

A: Given, The density of a gaseous compound was found to be 1.23 g/L at 330 K and 150 Torr. The molar…

Q: 50.0 g

A: Moles of propane = ( mass / molar mass )  Moles of propane = ( 50.0g / 44.1gmol-1 )  Moles of…

Q: 3. The molecular mass of propane is 44 g/mol. What is the mass of one liter of propane at STP?

A: According to the company guidelines, we have to answer only the first question. So, please kindly…

Q: What mass (in g) of NO2 is contained in a 12.8 L tank at 0.830 atm and 269 K?

A: Ideal gas equation relates pressure (P), volume (V), number of moles (n) and temperature (T). PV=nRT…

Q: A sample of hydrogen fluoride gas occupies 1250 mL at STP. What is the pressure in mm Hg if the…

A: Given details, At STP, V1=1250 mLT1=273KP1=1 atmV2=255 mLT2=573 K To calculate the final pressure.

Q: A sample of xenon gas occupies a volume of 7.31 L at 447 K. If the pressure remains constant, at…

A: A Charles law explains the relationship between volume and temperature at constant pressure. it…

Q: How many moles of a gas fill a flask with a volume of 168 mL at 97 degrees Celsius and a pressure of…

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

Q: A sample of He gas occupies a volume of 250.0 mL at 18.6°C in 1892 torr. What is the mass of the…

A: Ideal gas equation, Where, P=pressure, V=Volume, n =number of moles R=gas constant T=Temperature

Q: A gas occupies a volume 1.27 L and 25 Celsius is adjusted to new volume of 1.02 L at standard…

A:

Q: A sample of chlorine gas is confined in a 9.0 L container at 237 torr and 27°C. How many moles of…

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Q: A compound has the empirical formula CHF . A 256-mL flask, at 373 K and 750. torr, contains 0.527 g…

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

Q: You have 110 mL Ar(g) at 14 °C and 735 Torr. How many moles of Ar(g) are present?

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Q: What mass of NO2 is contained in a 13.0 L tank at 2.81 atm and 385 K?

A: Ideal gas equation PV =nRTWhere, P=Pressure of gas in atm             V =Volume of container of gas…

Q: What is the density of ammonia, NH3, at 800 torr and 25°C?

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Q: A sample of carbon dioxide occupies 475 mL at a temperature of 19 ºC and a pressure of 375 mm Hg.…

A: Given Volume, V1= 475ml Temperature,T1= 19ºC = 284K Pressure,P1= 375mm Hg Final condition:…

Q: A sample of xenon gas occupies a volume of 8.94 L8.94 L at 435 K. If the pressure remains constant,…

A: Initial volume, V1 = 8.94 L Initial temperature, T1 = 435 K Final volume, V2 = 5.76 L Final…

Q: A 2.135g sample of a gaseous chlorofluorocarbon occupies a volume of 315.5 mL at 739.2 torr and…

A:

Q: A hot-air balloon has volume of 851 L at 291 K. to what temperature (in K) must it be heated to rise…

A: Given,  Initial volume of hot air balloon = 851 L at 291 K.  The temperature must it be heated to…

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

A:

Q: What is the density of carbon tetrachloride vapor at 714 torr and 125 °C?

A: Since PM = dRT  where P = pressure in atm  M = molar mass in g/mol d = density in g/L R = 0.0821 T =…

Q: When a supply of hydrogen gas is held in a 4-liter container at 320K, it exerts a pressure of 800…

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

Q: What volume, in mL, would 1.00 grams of N2(g) occupy at a temperature of 18.5 oC and a pressure of…

A: The given data is as follows: The mass of N2 = 1.00 grams The temperature of the gas = 18.5…

Q: The density of liquid octane, C8H18, is 0.7025 g/mL. If 1.00 mL of liquid octane is vaporized at…

A: Data given: Density of octane = 0.7025 g/mL Volume of octane = 1.00 mL Temperature, T = 100 °C =…

Q: At 741 torr and 44 °C, 7.10 g of a gas occupy a volume of 5.40 L. What is the molar mass of the gas?

A: Using the ideal gas equation, given the pressure, temperature, mass and volume of the gas, where R…

Q: If a mass of nitrogen gas occupies a volume of 4 liters at 720 torr, what pressure will this same…

A: Given P1 = 720 torr V1 = 4 litre P2 = ? V2 = 3.9 litre

Q: A compound has the empirical formula CHI. A 256-mL flask, at 373 K and 750. torr, contains 2.31 g of…

A: The number of moles can be calculated using the ideal gas equation,PV = nRTP = 750 torr = 750 x…

Q: A mixture of gases consists of helium at a partial pressure of 400. torr, neon at a partial pressure…

A: Applying concept Doltons rule P= PHe+ PN2+ PAr

Q: A sample of carbon dioxide occupies a volume of 6.70 litres at 105 kPa pressure. What pressure would…

A:

Q: Calculate the volume of a sample of carbon monoxide that is at -12 degrees Celsius and 367 torr if…

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Q: How many moles of argon gas would it take to fill a cylinder with a volume of 1.4 L to a pressure of…

A: Volume of cylinder = 1.4 L Pressure of gas = 2.5 atm Temperature of gas = 310 K No. of mol of Argon…

Q: What is the molar mass of a gas, in g/mol, if 286 mL at 69 oC and 17.9 Torr pressure weighs 0.0156…

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Q: What must be the new volume of a sample of nitrogen (in L) if 2.89 L at 742 torr and 23.6 °C is…

A: The final volume of the gas can be measured by using the combined gas law. The combined gas law is:…

Q: A sample of oxygen gas at 310 K and 1.74 atm occupies a volume of 1.91 L. If the gas is allowed to…

A: According to gas laws, PV = nRT, Where P = Pressure, V = volume, T = temperature, n = no. of moles,…

Q: A sample of fluorine gas occupies 815 mL at 750 mmHg and 140 ∘C. What is the mass of the sample?

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Q: A compound has the empirical formula CHBr. A 256-mL flask, at 373 K and 750. torr, contains 1.53 g…

A: Given: Empirical formula: CHBr Volume = 256 mL Temperature = 373 K Pressure = 750 torr = 0.9868 atm…

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…

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.