Question

the number of moles of a gas having a volume of 5litres at 190 torr and 27degree Celsius is

Answer 1

here ,
number of mole=?
P =190 torr
T =27 degree celcious =300 Kelvin
V =5liters
here, R = 0.08206 L atm mol-1 Kelvin -1

$pv = nrt \\so \\ n = pv \div rt \\ n = (190 \times 5) \div 0.08206 \div 300$

By solving you will get
total number of moles n =38.59 moles

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