JAMB - Chemistry (2001 - No. 1)
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
설명
According to Avogadro's law which states that equal volumes of different gases contain the same number of molecules at the same temperature and pressure. If the number of molecules gas X contains, is Z molecules, therefore, gas Y will also contain Z molecules. Option C is the correct answer