If the value of Avogadro number is and the value of Boltzmann constant is

PHYSICS · Subjective · A Level · Physics · Measurements and their errors · Measurements and their errors

Problem

If the value of Avogadro number is

6.023 \times 10^{23} \text{ mol}^{-1}

and the value of Boltzmann constant is

1.380 \times 10^{-23} \text{ JK}^{-1}

, then the number of significant digits in the calculated value of the universal gas constant is _____.