2.15 g of an unknown gas at 71 degrees c and 1.10 atm is stored in a 1.75 l flask. solve for the density and the molar mass of the gas.

Density :  0.01229 g/ml

Molar mass  : 31.525 g/mol

Some of the laws regarding gas, can apply to ideal gas (volume expansion does not occur when the gas is heated),:

So that the three laws can be combined into a single gas equation, the ideal gas equation

In general, the gas equation can be written

where

P = pressure, atm

V = volume, liter

n = number of moles

R = gas constant = 0.08206 L.atm / mol K

T = temperature, Kelvin

Density is a quantity derived from the mass and volume

density is the ratio of mass per unit volume

The unit of density can be expressed in g / cm3 or kg / m3

Density formula:

ρ = density

m = mass

v = volume

2.15 g of an unknown gas at 71 degrees C and 1.10 atm is stored in a 1.75 L flask.

so density = mass : volume

To find the molar mass, we first look for the number of moles with the ideal gas equation:

PV = nRT

T = 71 °C + 273 = 344 K

Which equation agrees with the ideal gas law

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Which law relates to the ideal gas law

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explanation: