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A sample of nitrogen gas is produced in a reaction and collected under water in a graduated cyliner. The temperature is 26.3 oC and the volume of gas is 45.1 mL. During this experiment the total pressure in the graduated cylinder is 735 mm Hg. How many grams of nitrogen were collected

Respuesta :

okpalawalter8

The mass of nitrogen collected is mathematically given as

M-N2=0.025gram

What is the mass of nitrogen collected?

Question Parameters:

A sample weighing 2.000g

the liberated NH3 is caught in  50ml pipeful  of H2SO4 (1.000ml   =  0.01860g Na2O).

T=26.3c=299.3K

Pressure=745mmHg=745torr

Pressure of N2=745-25.2=719.8torr

Generally, the equation for the ideal gas   is mathematically given as

PV=nRT

Therefore

719.8/760=45.6/1000=n*0.0821*299.3

n=0.00176*14

In conclusion, the Mass of N2

M-N2=0.00176*14

M-N2=0.025gram

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