A 250.0 mL flask contains 0.200 g of a gas at 212 mmHg and 23oC, what is the molar mass of the gas?

Q: how many moles of argon are there in a 27.3 L sample of gas at 85.9 kPa and 50.5 C

A: ideal gas equation PV=nRT n= PV/RT n=no of moles  of Argon

Q: An experiment shows that a 268 mLmL gas sample has a mass of 0.428 gg at a pressure of 755 mmHgmmHg…

A: A gas sample has, Mass =  0.428 g Volume = 268 mL Pressure = 755 mmHg Temperature =  38°C,

Q: grams

A:

Q: After 0.600 L of Ar at 1.35 atm and 205°C is mixed with 0.200 L of O2 at 530 torr and 135°C in a…

A: Ideal gas law- PV = nRT were, P = pressure V = volume  n = moles R = ideal gas constant T =…

Q: A sample of gas occupies a volume of 101 mL at 220.0 torr and 30.5˚C. Calculate the volume at 500.0…

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

Q: A sample of a gas occupies a volume of 29.7 L at 13ºC and 784 torr. What will be the new volume if…

A: Given, A sample of a gas occupies a volume of 29.7 L at 13ºC and 784 torr. The new volume if the…

Q: Ammonia and hydrogen chloride gases react to form solid ammonium chloride. A 12L reaction flask…

A: This question is based on Ideal gas equation. Applying the concept of ideal gas equation you can…

Q: What mass of an oxygen gas will occupy a 7.25 L container at 14°C and 760 mmHg?

A: Given that: Volume of gas = 7.25 L Temperature (T) = 14°C = 287 K Pressure (P) = 760 mm Hg = 1 atm…

Q: How many moles of nitrogen are in a 2145 mL sample of the gas at 1500. torr and 120°C?

A: We have to calculate the moles of nitrogen gas.

Q: A gaseous sample of a compound has a gas density of 0.997 g/liter at 710.0 torr and 100.0 °C. What…

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Q: how many grams of aluminum reacted

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Q: Calculate the volume of a sample of carbon monoxide at -12°C and 378 torr if it occupies 3.65 L at…

A: Given: At temperature 298 K The volume of the gas = 3.65 L The pressure of the gas = 749 torr Or…

Q: After 0.600 L of Ar at 1.49 atm and 201°C is mixed with 0.200 L of O₂ at 557 torr and 150°C in a…

A: Two different gas tanks of Ar and O2 at different conditions are added to a single gas tank.  We…

Q: After 0.600 L of Ar at 1.49 atm and 221°C is mixed with 0.200 L of O, at 403 torr and 1 400.-mL…

A: Given data set: Volume of Ar =0.600 L, Pressure of Ar = 1.49 atm Temperature of Ar = 221 C Volume of…

Q: Two gases, He and Ne, are collected in identical 2.00 L containers at STP. How many moles of Neon…

A: Given, Volume = 2 L, at STP pressure = 1 atm , R =  , T = 0°C = 273.15 K

Q: At 35.0 °C, a 12.0 L vessel is filled with 6.25 moles of Gas A and 6.00 moles of Gas B. What is the…

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Q: A 200 ml sample of oxygen gas is collected at 26.0 C and a pressure of 690 torr. What volume will…

A:

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: How many moles are in a 1.25 L sample of gas at 200. K and 745 torr?

A: Given:Volume=1.25 LPressure=745 torrTemperature=200 KConversion:From torr to atm:Pressure=745 torr…

Q: Calculate the molar mass of an unknown gas that has a mass of 4.55g, exerts a pressure of 2.55atm,…

A: We are given gas having the mass of 4.55 gram and  it exerts a pressure of 2.55 atm and occupies a…

Q: When 15.0 g of fluorite (CaF2) reacts with excess sulfuric acid, hydrogen fluoride gas is collected…

A: . The reaction is as follows CaF2(s) +H2SO4(excess) →2HF(g) +CaSO4(s) Moles of calcium fluorite…

Q: A sample of carbon dioxide is contained in a 125.0 mL flask at 0.900 atm and 17.8 °C. How many…

A: The ideal gas equation is actually the equation of state of a hypothetical ideal gas and it is as…

Q: A 10.0g sample of kryptonite has a temperature of 25C at 575mmHg. What is the volume, in milliliters…

A: Convert unit of pressure and temperature:

Q: How many moles of CO2 are contained in 7.62 L at 38 °C and 711 torr?

A: Given -                         Volume of sample (V) = 7.62L…

Q: how many moles of nitrogen are in a 2145 ml sample of the gas at 1500. torr or 1500 mm of mercury.…

A:

Q: A 240. mL sample of an unknown gas at 99C and 722 torr has a mass of 1.20 g. Calculate the molar…

A: Given,Temp= 99 degree Celsius.Pressure = 722 torrMass = 1.20gVolume = 240mL

Q: A 0.593g sample of gas has a volume of 115 mL at 53.2 ∘C and 94.0 kPa. What is the molar mass of…

A: Use ideal gas equation:

Q: How many moles of the indicated gas were produced using the given conditions? O in a sample of 0.12…

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Q: After 0.600 L of Ar at 1.43 atm and 238°C is mixed with 0.200 L of O, at 514 torr and 117°C in a…

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Q: 258 mL sample of MEK , an industrial solvent, is found to have a mass of 0.599 g at 0.988 atm and…

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Q: A large flask with a volume of 936 mL is evacuated and found to have a mass of 134.66 g. It is then…

A:

Q: a flask contains 1.00 L of a pure gas at 0.850 atm and 20.0°C. mass of the gas= 1.13 What is the…

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Q: grams

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Q: Calculate the density of hydrogen gas (in g/L) at 43.0C and 700.0 torr.

A: Given: Temperature = 43.0 oC = 316 K Pressure = 700 torr = 0.921 atm Molar mass of hydrogen gas (H2)…

Q: Question attached

A: The given data contains, mass of unknown compound =2.50 g volume =875 ml Pressure =685 mm Hg…

Q: A 20.0 L container at 303 K holds a mixture of two gases with a total pressure of 5.00 atm. If there…

A: Given :  Volume of gaseous mixture = 20.0 L  Temperature = 303 K  Total pressure = 5.00 atm  Number…

Q: A 350. mL gas sample at 25.0 oC and 525 torr.  Calculate the moles of gas.

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Q: Calculate the mass in grams of 3.55 L of NO gas at temp 52 C and 874 mmhg

A: By combining three laws Boyle’s law V ∝ 1/P   (constant T and n)       eqn i) Charle’s law V ∝ T…

Q: How many grams of oxygen must react to produce 42.852 L of NO at 25.485°C and 0.9590 atm, according…

A: The chemical reaction taking place is: 4NH3(g) + 5O2(g) → 4NOg + 6H2Og The given information is:…

Q: After 0.600 L of Ar at 1.27 atm and 225°C is mixed with 0.200 L of O2 at 600 torr and 106°C in a…

A: PV = nRT n = PV / RT Given that,For ArP = 1.27 atm V = 0.600 LT = 225oC = 225 + 273.15 = 498.15 KR =…

Q: A gas at 527 torr and 1.1 liters is allowed to expand to 4.5 liters. What is the final pressure of…

A: Given, initial pressure =527 torr initial volume of gas=1.1 L final  volume of gas=4.5 Lwe are asked…

Q: After 0.600 L of Ar at 1.20 atm and 227°C is mixed with 0.200 L of O₂ at 501 torr and 127°C in a…

A: Total moles of gas = moles of Ar + moles of O2  PVRT = P1V1RT1+P2V2RT2   P x 0.400R x 300 = 1.20 x…

Q: How many moles of air will be in a 22.4L container at 18ᵒC and 623mmHg?

A:

Q: A sample of nitrogen gas occupies a volume of 9.82 L at 67.0°C and 347 torr. torr. f the volume of…

A: Solution : We will use the ideal gas equation in this case as initial pressure, volume, and…

Q: how many moles of CO are contained in a 5.00 L tank at 155 degrees C and 2.80 atm?

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Q: A gas was found to have a density of 0.0847 g/L at 17.0 °C and a pressure of 760 torr. What is its…

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Q: (a) Calculate the density of sulfur hexafluoride gas at 707 torrand 21 °C. (b) Calculate the molar…

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Q: After0.600 L of Ar at 1.05 atm and 201°C is mixed with0.200 L of O2 at 339 torr and 146°C in a…

A: The pressure of the flask would be calculated by adding the total moles of individual flasks.  P =…

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.