A gas cylinder contains 50.0 L of the gas argon when it is full. If the cylinder was at an internal pressure of 102 kPa and 25°C, how many molecules of argon gas were present in the container?

Q: You have a sample of an unknown gaseous compound which has a density of 8.51 g/L at 55.0 °C and 88.6…

A: Given: Density of gas = 8.51 g/L Temperature = 55.0oC = 55+273=328.0 K Pressure = 88.6 kPa

Q: What volume of hydrogen gas is produced when 77.6 g of sodium reacts completely according to the…

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Q: Assume the following gasses, Xe, H2, N2, CH3CH2CH2CH2CH3 and Ar all exist at 1 atmosphere and all…

A: Density of the gas is related to molar mass, pressure and the temperature by the equation below:…

Q: How many moles of SO_2 gas are contained in a 4.7 L container at 450 K and 5.00 kPa?

A: Given,  Temperature = 450 K Volume of SO2 gas = 4.7 L Pressure = 5.00 kPa 1 atm = 101.3 kpa 5.00 Kpa…

Q: what is the density of oxygen gas at 25 degrees C and 120 kPa?

A: The density of oxygen gas at 25 degrees C and 120 kPa is to be determined.

Q: Ammonia is produced industrially by reacting N2 with H2 at elevated pressure and temperature in the…

A: Given data, Volume(V)=7.82×103LTotal pressure(P)=245barTemperature(T)=677oC=677+273.15=950.15K

Q: What volume of carbon dioxide is produced when 49.0 g of calcium carbonate reacts completely…

A:

Q: Methane, CH4, can be used as a fuel instead of gasoline. If you used 655 g of CH4 in placed of one…

A: Given, Methane, CH4, can be used as a fuel instead of gasoline. If you used 655 g of CH4 in placed…

Q: A gas has a volume of 2.73 L at -3.7oC and 139.5 kPa. At what temperature would the gas occupy 1.7 L…

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Q: In alcohol fermentation, yeast converts glucose to ethanol and carbon dioxide: C6H12O6 (s)= 2C2H5OH…

A: Molar mass of glucose = 6 X 12 + 12 X 1 + 6 X 16 = 180 g/mol  Hence moles of glucose reacting = mass…

Q: Methanol, CH3OH, is produced industrially by the following reaction, using a copper catalyst 300 *C,…

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Q: The volume of a sample of helium is 4.5ml at 20C and 203kpa, what will its volume be at 10C and…

A: Given data,Initial volume(V1)=4.5mL=0.0045LInitial Temperature(T1)=20oC=293KFinal volume(V2)=?Final…

Q: Calculate the density of 1.0 mole of ammonia gas at 0.913 atm and 20.0 Celsius.

A: The ideal gas equation in terms of density of the gas (ρ) can be expressed as: Pρ  =  RTMwP  =…

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: A chemist has synthesized green-yellow gaseous compound of chlorine and oxygen and finds that its…

A: It is known that,   Given data,

Q: What is the molar mass of a gas if 150.0 mL has a mass of 0.922 g at 99 ºC and 107.0 kPa?

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

Q: What is the mass of a 3.00 L sample of a gas if this volume was measured at 40oC and 99.2 kPa?…

A: Let the pressure, volume, number of moles and mass of the gas at 40◦C (313K) be P1, V1, x and W1…

Q: 3. An investigator is told that a closed vessel holds a pure rare gas. She measures the density of…

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Q: If a gaseous mixture is made of 2.93 g of He and 2.27 g of Ne and is in an evacuated 2.01 L…

A: The product of mole fraction with total pressure gives the partial pressure of a gas. Given volume…

Q: Calculate the density of propane gas at 780 torr and 40 0C.

A: Ideal gas law states that the product of volume (L) and pressure (atm) is equal to the product of…

Q: In alcohol fermentation, yeast converts glucose to ethanol and carbon dioxide: C6H12O6(s) ⟶…

A: Reactio equation : C6H12O6(s) →             2C2H5OH(l) + 2CO2(g)Mass of glucose reacts = 5.97…

Q: An investigator is told that a closed vessel holds a pure rare gas. She measures the density of the…

A: The density of the gas, d = 0.8252 g/L Temperature of the gas, T = 298 K Pressure of the gas, P = 1…

Q: In alcohol fermentation, yeast converts glucose to ethanol and carbon dioxide: C6H12O6(s) →…

A:

Q: A spherical tank 3 m in diameter contains 54.55 kg of a mixture of CO2 and N2. If the total pressure…

A:

Q: What volume of carbon dioxide is produced when 81.5 g of calcium carbonate reacts completely…

A: Please find the answer attached.

Q: To prevent the presence of air, noble gases are placed over highly reactive chemicals to act as…

A: At STP,  temperature, T = 273.15 K Pressure, P = 1 bar or 0.987 atm So the total pressure due to all…

Q: At what temperature (in Kelvin) will 4.23 moles of N2 gas exert a pressure of 123 kPa in a 35.0 L…

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Q: A sample of gas at 879.6 mmHg and occupying a volume of 14.39 L is transferred to a large container…

A: The given data: The initial pressure of the gas = 879.6 mmHg 1 mmHg = 0.133322 kPa 879.6 mmHg =…

Q: A 5.25g sample of gas occupies a volume of 1L and exerts a pressure of 1.074atm at -4 degree…

A: An ideal gas is represented by the following expression: PV = nRT    ............ (1) where P, V, n,…

Q: How many moles of gas are there in a 0.75 L balloon if the temperature of the balloon is 521 K and…

A: An ideal gas is the hypothetical gas composed of many randomly moving point particles that are not…

Q: Which of the following gas samples have the greatest average molecular speed at 25°C? A) Kr B) CH,…

A: Average molecular speed (Cavg): The average speed of the molecule can be determined by using the…

Q: What is the temperature (in °C) of an 11.8 L sample of carbon monoxide, CO, at 747 torr if it…

A: Given: V1 = 11.8 L V2 = 12.9 L T2 = 57.0oC T1 = ?

Q: Consider the reaction of magnesium metal with hydrochloric acid to produce magnesium chloride and…

A:

Q: At what temperature does 0.038665 moles of Ne in a 892.6 mL container exert a pressure of 0.767 atm?…

A: Use ideal gas law to find out the temperature. Convert the volume in liters. 892.6 mL = 0.8926 L

Q: under thermal decomposition, potassium chlorate degrades into potassium chloride and oxygen by the…

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

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Q: With sufficient oxygen present, pentane burns according to the reaction: C5H12(1) + 80₂(g) → 5CO2(g)…

A: Given reaction: C5H12(l) + 8O2(g) → 5CO2(g) + 6H2O(g) We have to find the volume of oxygen at SATP…

Q: What pressure does the gas exert if the temperature changes from T1 = 600. K to T1 = 300. K, while…

A: According to Gay-Lussac's law, at constant volume pressure increases, temperature increases.

Q: Which of the following gas samples have the highest average molecular speed at 25 Celcius?  Kr,…

A: Given, here a sample of few gases as follows,  Kr, CH4 , N2 , CH2Cl2 , CO2 We are asked which of the…

Q: What volume of ammonia is required to react with 5.38 liters of oxygen gas according to the…

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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: A scientist isolates a sample of gas that occupies a volume of 678.1 mL at 104.3 kPa and 39.27 °C.…

A: Inert gas equation: -  PV=nRT (104.3*0.01atm)*(0.678 L) = n * 0.0821*(39.27 +273.15) n = 0.0275…

Q: When the temperature of a rigid hollow sphere containing 46.5 mL of argon gas is held at 24.5°C, the…

A: In this question, we want to determine the mass of argon gas. How we can determine the mass of argon…

Q: Calculate the following quantity for an ideal gas: The density of NO2 gas in g/L in a 4.50L tank at…

A: GivenVolume of Tank = V =4.50 LPressure of Tank = P = 760 mmHgTemperature of Tank = 25°C = (25 +…

Q: The combustion of octane, C8H18, proceeds according to the reaction shown.…

A: From the balanced equation, it is clear that two moles of octane react to give 16 moles of carbon…

Q: What is the density of air at 762 mmHg and 32°C? the molar mass of gases in air is 29g/mol.( please…

A: The density of a gas can be calculated by using the ideal gas equation. The ideal gas equation is…

Q: What is the temperature of 1.131 g of gaseous Cl2 in a 1.31 L container at a pressure of 92.9 kPa?…

A:

Q: At conditions of 115 kPa of pressure and a temperature of 18.4C, a gas occupies a volume of 44.3 mL.…

A: When the temperature and pressure of the gas is changed from 115 kPa to 60.3 kPa and 18.4 °C to 30.6…

Q: if the density of water is 1.00g/ml and desity of density of mercury is 13.6g/mL,how high a coloumn…

A: Since the pressure = 1 atm                                    (  standard atmospheric pressure)…

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.