25cm\(^3\) of a gas X contains Z molecules at 15\(^0\)C and 75 mmHg. How many molecules will 25cm\(^3\) of another gas Y contain at the same temperature and pressure?
2 Y
2 Z
Z
Y
Explanation
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Discussions (12)

According to Avogadros principle " Equal Volume of all gases contain thesame Number of molecules under thesame condition of Temperature and Pressure
Mathematically:
V varies directly proportional to N (at constant T and P)
where V = volume
P = Pressure
N = Number of molecules
T = Temperature
Therefore 25cm3 of Y will also contain Z molecules (at same temp and pressure i.e 15cm3 and 75mmHg).

accordin 2 avogrado's law all gases at d same temperature nd pressure hav d same no of moles

avogadros law states thra equal volumes of gases at the same temperature and pressure contain the same number of molecules

C is correct......if u look closely you will find out that the volume,pressure and temp are the same ... leaving us with still Z as the number of molecules

Avogadro's law states that equal volumes of all gases at the same temperature and pressure contains the same number of molecules

