A sample of an unknown gas weighing 10.9 g occupies a 25.585 L container at a pressure of 0.694 atm and a temperature of 713oC.  What is the molar mass of the gas?

Q: At a pressure of 1 atm and a temperature of 20oC, dry air has a density of 1.2256 g/L. What is the…

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Q: Calculate the density of Xenon gas (in g/L) at 23.0oC and 700.0 torr.

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Q: A 4.57 L container containing a mixture of gases has a temperature of 41.7 °C and a pressure of…

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Q: If 98.5 mol of an ideal gas occupies 29.5L at 37.00 degrees Celsius, what is the pressure of the…

A: According to ideal gas law, PV = nRT where P = pressure in atm V = volume = 29.5 L n = moles of gas…

Q: A sample of a gas weighs 2.85 g and has a volume of 1001 mL at 715.0 torr and 20.0 °C. What is its…

A: The given mass of a sample of gas is 2.85 g. The given pressure is 715.0 torr.It is known that 1…

Q: At 30oC, a gas cylinder containing nitrogen has an internal volume and pressure of 58.5 L and 1.75 *…

A: All matter can be classified as solid, liquid and gases mainly. In these physical states of matter,…

Q: A 3.35 g sample of an unknown gas at 23 C and 1.10 atm is stored in a 3.05 L flask. What is the…

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Q: If the balloon described in Question 6.44 is released into the air and rises to an altitude of…

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Q: A gas with a mass of 95.14g occupies 48.8L at 659mmHg and 25.3°C. What is its molecular weight? Use…

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Q: An 8.00-g sample of a gas occupies 22.4 L at 2.00 atm and 273 K. What is the molar mass of the gas?

A: Given that -  Mass of the gas = 8.00 g  Volume of the gas = 22.4 L  Pressure of the gas = 2.00 atm…

Q: If 3.75 g Ar are added to 4.26 atm He in a 2.00 L cylinder at 27.0 °C, what is the total pressure of…

A: Given mass of argon = 3.75 g Molar mass of argon = 39.95 g/mol Number of moles of argon (n) =…

Q: A 3.55 g sample of an unknown gas at 23 ∘C and 1.05 atm is stored in a 3.05 L flask. What is the…

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Q: A 2.85-g sample of an unknown chlorofluorocarbon decomposes and produces 564 mL of chlorine gas at a…

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Q: An experiment shows that a 114 mL gas sample has a mass of 0.171 g at a pressure of 720 mmHgand a…

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Q: A 3.55 g sample of an unknown gas at 59 °C and 1.05 atm is stored in a 1.05 L flask. What is the…

A: a) Since mass of gas is given = 3.55 g  and volume of gas = volume of flask = 1.05 L hence density…

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: step 1: Here, given as the: Thus, the mass of gas is 1.38g. Now, to calculate the molar mass,…

Q: A 1.95 g sample of an unknown gas at 67 °C and 1.05 atm is stored in a 2.05 L flask. What is the…

A: The molar mass of a chemical compound is defined as the mass of a sample of that compound divided by…

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…

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Q: molar mass

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Q: At what temp will a 3.00g sample of neon gas exert a pressure of 459torr in a 3.00L container? What…

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

Q: How many moles of an ideal gas are in a 1,686.5 mL container at 25.2°C and 826.1 torr?

A: An ideal gas is a conceptual gaseous substance whose behaviour is fully defined by the ideal gas law…

Q: A 1.95 g sample of an unknown gas at 61 ∘C and 1.00 atm is stored in a 1.45 L flask. What is the…

A: Given information:Mass of sample = 1.95 gTemperature = 61 °CPressure of gas = 1.00 atmVolume of…

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: What is the molar mass of a gas if 0.0494 g of the gas occupies a volume of 0.100 L at a temperature…

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Q: A 3.65 g sample of an unknown gas at 61 °C and 1.05 atm is stored in a 2.35 L flask. What is the…

A: We use ideal gas equation to find number of moles and then we use it for molar mass calculation.

Q: What mass of butane, in g, will be needed to fill a 3.12 L container to a pressure of 858 torr at a…

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Q: A flask with a total volume of 0.0200 L is found to contain 0.05649 g of an unknown gas when the…

A: Ideal gas equation PV = n RTwhere n = number of moles of unknown gas n can be written as n = m/M…

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

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Q: At 1.10 atm and 14.23 ∘C, a 2.15g sample of gas occupies a volume of 2.10×103 mL. Calculate the…

A: Given pressure = 1.10 atm volume = 2.10 × 103 ml Temperature = 14.23°C mass = 2.15 g

Q: A sample of xenon gas occupies a volume of 6.95 L at 493K. If the pressure remains constant , at…

A: The xenon gas sample is given at - Volume, V1 = 6.95 L  Temperature, T1 = 493 K Volume, V2 = 3.77 L…

Q: The volume of gas in a container was originally 3.24L, while at standard pressure, 1.00atm. What…

A: Given information: V1 = 3.24 L P1 = 1.00 atm P2 = 1.20 atm

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: 238.15L of gas at 841.5 torr and 85.1°C is heated until the temperature reaches 134.1°C.  and the…

A: According to the ideal gas law, the volume of a gas is directly proportional to the number of moles…

Q: At what temperature will 1.25 mole of an ideal gas in a 2.40 L container exert a pressure of 1.75…

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Q: A 14.36 mol sample of argon gas at 95.98 °C occupies 24.00 L. What is the pressure in kPa? Provide…

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Q: When sodium chlorate (NaClO3) is heated, it decomposes into sodium chloride and oxygen gas. A…

A: Given Sodium Chlorate decomposes into sodium chloride and oxygen gas. Volume of gas= 400.0 mL…

Q: Determine the formula weight of a gas if 0.8065 g of the substance occupies 0.282 L at 703 Torr and…

A: The ideal gas equation is  PV = nRT  P = pressure of gas  V = volume of gas  n = moles of gas =…

Q: If 42.5 g of O2 and 2.8 g of CO2 are placed in a 11.2 L container at 24 °C , what is the pressure of…

A: Given mass of O2 = 42.5 g  mass of CO2 = 2.8 g volume = 11.2 L temperature = 24 °C

Q: A 1.20-g sample of an unknown gas is placed in a 275.0 mL flask at 35 0C and 1.00 atm. What is the…

A: Mass of a sample = 1.20 g  Volume = 275.0 ml  ....Or  because 1L = 1000 ml    so,  = 275.0 ml × (1L…

Q: A 3.88 L vessel contains 4.09 g of a gas at 838 torr and 27.5 °C. What is the molar mass (g/mol) of…

A: Use PV= n RT  Where temperature (T)  must be in Kelvin unit. Mole, n = weight / molar mass

Q: At 2.00oC and 1.00 atm, a sample of gas occupies 30.0 mL. If the temperature increases to 30.0oC and…

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Q: At 24 °C and 745 mmHg, the density of an unknown gas is determined to be 7.76 g/L. What is the molar…

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Q: The Density of a gas was measured at 1.50 atm and 27°C and found to be 1.95 g/L. Calculate the molar…

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Q: A 3.65 g sample of an unknown gas at 61 ∘C and 1.00 atm is stored in a 2.05 L flask. What is the…

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Q: A sample of gas at 756 torr and 230C occupies 123 mm3. What would its volume be if the (75.4…

A: Boyle’s law is a gas law which states that the pressure exerted by a gas (of a given mass, kept at a…

Q: A 18.0 mg sample of an unknown gas is placed in a 750.0 mL flask at 85 0C and 1.20 atm. What is the…

A: Given data,Mass of gas=18.0mg=0.018gVolume=750mL=0.750LTemperature=85oC=85+273=358KPressure=1.2atm

Q: A 1.05 g sample of an unknown gas at 61 "C and 1.05 atm is stored in a 2.55 L flask. What is the…

A: Mass per unit volume is known as density. S.I unit of density is g/cm3 or kg/m3. Other units of…

Q: A bulb of 138. 2 mL volume contains 0. 6946 g of gas at 756. 2 Torr and 100. 0°c, what is the molar…

A: Mole can be defined as a standard unit for measuring large quantities of very small atoms,…

Q: Calculate the final pressure in torr when the volume of a gas 750 ml at 29.7psi is released into a 2…

A: From Boyle’s Law that states that at a constant temperature the pressure of the given mass of an…

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.