A flask P contains 0.5 mole of oxygen gas. Another flask Q contains 0.4 mole of ozone gas. Which of the two flask contains greater number of oxygen atoms?

Explanation

In flask P, number of atoms = `2xx 0.5 xx 6.022 xx 10^23 =6.022 xx 10^23`
in flask Q, number of atoms = `3 xx 0.4 xx 6.022xx 10^23 = 7.23 xx 10^23`
Flask Q has more number of oxygen atoms.