A 15.0g sample of gas occupies 23.2 L at STP. What is the molecular weight of this gas?

Q: A 0.400 L sample of gas at -58.03 °C is warmed to room temperature, 25 oC.  What is the new volume…

A: Given: Initial Volume V1 = 0.4 L Initial Temperature T1 = -58.03 oC = 215.12 K Final Temperature T2…

Q: The molecular weight of a gas is ______ g/mol if 3.5 grams of the gas occupies 2.1 L at STP

A: Given :  volume of unknown gas = 2.1 L  Mass of unknown gas    = 3.5 g  Molecular weight of a…

Q: Calculate the density of chlorine gas in g/L, at STP.

A:

Q: A 2.85 g sample of an unknown gas at 61 °C and 1.00 atm is stored in a 2.85 L flask. What is the…

A:

Q: A balloon containing 0.75 mol of nitrogen gas has a volume of 16.8 L. If the amount of nitrogen in…

A:

Q: A 1.35 g sample of an unknown gas at 53 °C and 1.05 atm is stored in a 2.75 L flask. What is the…

A: Given: Pressure = 1.05 atm  Volume= 2.75 L  R = gas constant = 0.0821 L atm mol-1K-1 T = temperature…

Q: A 4.05 g sample of an unknown gas at 33 °C and 1.05 atm is stored in a 3.05 L flask. What is the…

A:

Q: What is the molar mass of Freon-11 gas if its density is 6.13 g/L at STP?

A:

Q: Consider a different sample of CO (g).  This sample of carbon monoxide gas occupies a volume of 41.2…

A: Volume at STP= 41.2 L  Mole is equal to volume at STP divide by standard volume   Mole CO = volume…

Q: A 2.00 L sample of N2(g) at 1.50 atm and a 6.92 L sample of O2(g) at 2.50 atm are transferred to a…

A: The number of moles of an ideal gas is calculated by using ideal gas equation as shown below.

Q: At 118oC, the pressure in a 12.0 L flask is 847 mm Hg. How many moles of gas are in the flask?

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

Q: 5. The volume of a gas-filled balloon is 30.0 L at 47°C and 1.63 atm pressure. What volume will the…

A: Expression for ideal gas equation :- PV = nRT P = pressure ,  V = Volume  T = temperature  R =…

Q: An unknown gas has a molar mass of 24.0 g/mol. What is the density of this gas at STP in g/L?

A:

Q: red in a 2.15L flask. g/

A: Density of the gas = ( mass / volume )  Density = ( 3.35g / 2.15 L )  Density = 1.56 g/L ( Answer )

Q: A sample of helium gas at a pressure of 604 torr and a temperature of 23.6°C, occupies a volume of…

A: Given : P1 = 604 torr   P2 = 903 torr T1 = 23.6 °C     T2 = T1 V1 = 817 ml We know, at constant…

Q: A sample of He occupies a 2.75 L bulb while exerting 355 torr of pressure. If the sample is then put…

A: Boyle's Law Formula; P1 V1 = P2 V2 where P is pressure and V is volume

Q: A 8.12 g gas at the pressure of 1090 mmHg and temperature of 20oC occupies a volume of 2.00 L.  How…

A: Consider the given information is as follows; Initial mass m1 = 8.12 g Final mass m2=?…

Q: A 3.05 g sample of an unknown gas at 21 °C and 1.10 atm is stored in a 1.95 L flask. What is the…

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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.