

Stoichiometry - Engineering
Q1: The number of atoms of oxygen present in 11.2 litres of ozone (O3) at N.T.P. areA 3.01 x 1022
B 6.02 x 1023
C 9.03 x 1024
D 1.20 x 1024
ANS:C - 9.03 x 1024 To solve this problem, we need to use Avogadro's law, which states that equal volumes of gases at the same temperature and pressure contain equal numbers of molecules. At standard temperature and pressure (NTP), which is 0°C (273.15 K) and 1 atmosphere pressure, one mole of any gas occupies 22.4 liters. Ozone (O₃) has a molar mass of approximately 48 grams per mole. So, to find the number of oxygen atoms in 11.2 liters of ozone at NTP, we first need to find the number of moles of ozone in 11.2 liters and then multiply by the number of oxygen atoms per molecule.
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