"It is impossible to determine simultaneously the exact position and exact momentum of an electron." This statement is called

Which of the following statements is false about oxygen and sulphur?

Calculate rate constant of a first order reaction having pre exponential factor $1.6 \times 10^{13} \mathrm{~s}^{-1}$.

$$ \left(\mathrm{E}_{\mathrm{a}} / 2.303 \mathrm{RT}=21\right) $$

What is the difference in molar mass of Undecane and Dodecane?