How many atoms present in 8 gm of calcium

1.	How many atoms present in 8 gm of calcium
Answer» First CONVERT the mass of Calcium given in 'g' to moles 'n' using: n = m X M n = 8 x 40.1 n = 320.8 moles Now using n = N/NA N = n x NA (Avogadro's NUMBER) N = 1.93 x [10]x^{23}

Answer»

First CONVERT the mass of Calcium given in 'g' to moles 'n' using:

n = m X M

n = 8 x 40.1

n = 320.8 moles

Now using n = N/NA

N = n x NA (Avogadro's NUMBER)

N = 1.93 x [10]x^{23}