If your laboratory conditions were 744.4 torr and the volume of your apparatus was determined to be 164 mL, what is the molar mass of an unknown liquid that vaporizes completely at 100.0 oC and weighs 0.3457 g.

Q: If a gas has a volume of 34.5 L at 1020 mm Hg and 25.0C, what is the volume at standard temperature…

A: Given:- For a gas,  Volume (V1)= 34.5L Pressure (P1)= 1020 mm Hg = (1020/760)atm = 1.342 atm…

Q: What is the volume of methane at 273 K and 760 torr, if its original volume at 300 K and 769 torrs…

A: Given,

Q: A sample of gas of mass 3.66 g  occupies a volume of 515 mL  at 48 oC  and 0.24 atm  pressure. What…

A:

Q: What volume is occupied by 0.118 mol of helium gas at a pressure of 0.97 atm and a temperature of…

A: The volume occupied by the helium gas can be calculated by the ideal gas equation as follow: In…

Q: A vessel with a volume of 26.9 L contains 2.80 g of nitrogen gas, 0.605 g of hydrogen gas, and 79.9…

A:

Q: A sample of argon gas at 22.38 °C has a pressure of 94.88 kPa and occupies 28.46 L. How many moles…

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

A: Given, Mass of N2 gas (m) = 1.00 g Temperature of a gas (T) = 18.5 oC = (273.15 + 18.5) K = 291.65 K…

Q: If 22.5L of nitrogen at 748mm Hg are compressed to 725mm Hg at constant temperature, what is the new…

A: According to Boyle’s law:

Q: A cylinder contains a mixture of 2735 grams of carbon dioxide and oxygen, if the volume of the…

A: The effect of pressure and temperature is measured by Boyle’s law and Charles's law respectively.…

Q: What is the equivalent pressure of 1520 torr in units of atm?

A: Applying concept of conversation of torr to atm.

Q: If the density of a gas is 1.2 g/L at 745. Torr and 20 C. What is its molecular mass

A: From Ideal gas equation it is known that------- pV = nRT where p is the pressure , V is the volume…

Q: If 92.5 mol of an ideal gas occupies 86.5 L at 485 K, what is the pressure of the gas?

A: Recall ideal gas equation         PV=nRTHere, pressure of gas=P         volume of gasV=86.5 L…

Q: the oxygen gas emitted from an aquatic plant during photosynthesis is collected over water at a…

A: Answer :-  pOxygen = 720.2 (mmHg) The partial pressure of the oxygen gas = 720.2 mmHg…

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: A sample of oxygen gas initially at 373 K was heated to 427 K. If the volume of the oxygen gas…

A: Given that, pressure is held constant. Volume and temperature are changing.

Q: Calculate the molar mass of a gas at 388 torr and 45oC if 206 ng occupies 0.206 μL.

A: The molar mass of a gas at 388 torrs and 45oC if 206 ng occupies 0.206 μL has to be calculated,

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: Calculate the volume of 525 g of O2 at 25.7 torr and 25 degrees celsius.

A:

Q: A barometer reading gives a pressure of 756 mmHg. What is this value in units of atm?

A: Given Value of pressure reading in terms of mmHg as 756 mmHg

Q: What is the density of argon gas at a pressure of 312 mmHg and a temperature of 17 °C?

A:

Q: What is the molar gas volume at 288 degrees celsius and 1.40 atm?

A: Molar gas volume is defined as volume occupied by 1 mole of a gas at certain pressure and…

Q: hat would the volume of the gas be at a pressure of 65.0 kPa?

A: According to the Boyle's law, if two gases are kept under same temperature having equal moles, the…

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: If 160 grams of diatomic oxygen and 84 grams of diatomic nitrogen are contained in a 30 L tank at…

A: Given that:  Mass of O2 = 160g  Mass of N2 = 84 g  T = 25°C = 25°C + 273 = 298K  V = 30L

Q: We find that a mass of 0.896 g of a gaseous compound, containing only nitrogen and oxygen, occupy a…

A: By help of Ideal gas equation, we can calculate the molar mass of given compound , we use Following…

Q: A 40.0 g gas sample occupies 11.20 L at 1.00 atm and 273.15K. What is the molar mass (in grams/mol)…

A: Given Datas ; m = 40.0 g V = 11.20 L P = 1.0 atm T = 273.15 K  R = 0.0821 L.atm/mol.K M = ?

Q: The mass of an evacuated 255 mL flask is 143.187 g. The mass of the flask filled with 267 torr of an…

A:

Q: what mass of chlorine gas, cl^2 in grams, is contained in a 10L tank at 27° and 3.50 atm of…

A:

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: A sample of argon gas collected at a pressure of 546mmHg and a temp of 277k has a mass of 37.0…

A: Pressure =546 mmHg=(546/760) atm=0.718atm Temperature =277 K Mass= 37.0 grams Volume=?

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…

A:

Q: What is the density of neon gas at a pressure of 785 torr and a temperature of 35ºC?

A: Molar mass of Neon(Ne)= 20.1797 g/mol Provided temperature = 35°C Or, Provided temperature = (273.15…

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

A:

Q: If 150.00mL of N2 gas was collected at 760 torr, what is the new volme of the gas when the pressure…

A: We can use Boyle's law to solve for the new volume of the gas.Boyle's law states that at constant…

Q: A chemist vaporizes a liquid compound and determines its density to be 1.585 g/Lat 90.0 °C and 753…

A: Given density of liquid vapour is 1.585 g/L. Given temperature is 90.0° C. Given pressure is 753…

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

A:

Q: If 34.5 mol of an ideal gas occupies 86.5 L at 315 K, what is the pressure of the gas?

A: The pressure of the gas can be determined using Ideal gas Equation

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: What is the molar mass of a gas if 0.281 g of the gas occupies a volume of 125 mL at a temperature…

A: Given, amount of gas =0.281 gvolume of gas =125 mL =0.125 Ltemperature =126 °C  =(126+273.15) K…

Q: If 0.275 moles of oxygen gas are held in a sealed 550 mL flask at a pressure of 800 mm, what is the…

A: Given, Moles of Oxygen gas (n) = 0.275 moles Note: 1000 mL= 1L Volume of a gas (V) = 550 mL = 0.550…

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…

A:

Q: 10.0 g of argon exerts a pressure of 2800 torr at 75 degrees celsius. what is the volume of the…

A: 10.0 g of argon pressure = 2800 torr  Temperature = 75°c By using ideal gas equation…

Q: A sample of gas of mass 3.82g occupies a volume of 539 mL at 27 ⁰ C and 1.0 atm pressure. What is…

A:

Q: What is the density of ammonia gas in a 4.32 L container at 837 torr and 45.0 degrees Celsius?

A:

Q: What volume would 1.20 moles of gas held under 846 torr pressure and 303 K occupy?

A: 20  Given :-  No. of moles of gas = 1.20 mol  Pressure = 846 torr  Temperature = 303 K  To calculate…

Q: If 56.5 mol of an ideal gas occupies 92.5 L at 339 K, what is the pressure of the gas?

A: The question is about calculating the pressure of an ideal gas with the given data:

Q: If 81.5 mol of an ideal gas occupies 47.5 L at 429 K, what is the pressure of the gas?

A:

Q: The pressure 95.7 m under water is 339 kPa. What is this pressure in torr?

A: The given pressure P=339 kPa1Kilopascal is 7.5006 TorrKilopascal value is converted into Torr

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.