Respuesta :
Answer:
3.683×10^21 particles
Explanation:
Number of particles in a substance = (mass of the substance/molar mass of the substance)×Avogadro's number
Given;
Mass of compound =1.45g
Molar mass of compound =237g
Avogadro's number=6.02×10^23
Therefore, number of particles = (1.45/237)×6.02×10^23
=3.683×10^21 particles
Answer:
3.68•10^21 particles (correct to 3SF)
Explanation:
1.45 • xg molecular compound • 1mol/237g • (6.02•10^23)/ 1 mol = 3.6831•10^21 representative particles
*6.02•10^23 is Avagadro's number
