Question

What is the mass, in g, of Avogadro's number of chlorine atoms?

Answer 1

Avogadro's number, denoted as $N_A$, is the number of particles (atoms, molecules, ions, etc.) in one mole of a substance. It is approximately equal to $6.022\times 10^{23}$ particles per mole.

To determine the mass of Avogadro's number of chlorine atoms, we need to know the molar mass of chlorine. The molar mass of an element is the mass of one mole of atoms of that element. The molar mass of chlorine is approximately 35.45 grams per mole.

To calculate the mass of Avogadro's number of chlorine atoms, we can set up the following conversion:

$\text{1 mole Cl}=35.45\text{g Cl}\Rightarrow \text{Avogadro’s number of Cl atoms}=6.022\times 10^{23}\text{atoms}$

Using these values, we can set up the following equation:

$\frac{6.022\times 10^{23}\text{atoms}}{1}$ x $\frac{35.45\text{g}}{1\text{mole}}$

Calculating this equation gives us:

6.022×1023×35.45 g=2.132×1025 g6.022 imes 10^{23} imes 35.45 , ext{g} = 2.132 imes 10^{25} , ext{g}6.022×1023×35.45g=2.132×10<span class="vlist