Question

How many moles of sodium atoms correspond to 1.56x10²¹ atoms od sodium?

Answer 1

Answer:

Explanation:

Given,

no. of atoms of sodium = 1.56 × 10^21;

1 mole of sodium = 6.022 × 10^23;

No. of mol corresponding to the given atom of sodium = (1.56 × 10^21)/(6.022 × 10^23);

= 0.259/100;

= 0.00259 mole.

Answer 2

Answer:

Moles x Avogadro number = Total Atom

so to find the mole we just need to devide 1.56x10^21 by avogadro

Avogadro =  6,02214076x10^23.

$\frac{1.56x10^2^1}{ 6,02214076x10^2^3.}$  = 0.002590440945 mole