How many particles are in 1.57 moles of substance?

Answer 1

In one mole of a substance, there are 6.022 x 1023 particles. So, 1.57 moles x (6.022 x 1023 particles/1 mol) = 9.45 x 1023 particles.

Answer 2

There are approximately 9.45 x 10^23 particles in 1.57 moles of substance. This is calculated using Avogadro's number (6.022 x 10^23) as an estimate for the number of particles in one mole.