Answer:
50000mm u add subtract multiply divide
Explanation:
Answer: The mass in
atoms of zinc is 0.405 g.
Explanation:
Given: Atoms of zinc = ![3.75 \times 10^{21}](https://tex.z-dn.net/?f=3.75%20%5Ctimes%2010%5E%7B21%7D)
It is known that 1 mole of every substance contains
atoms. So, the number of moles in given number of atoms is as follows.
![Moles = \frac{3.75 \times 10^{21}}{6.022 \times 10^{23}}\\= 0.622 \times 10^{-2}\\= 0.0062 mol](https://tex.z-dn.net/?f=Moles%20%3D%20%5Cfrac%7B3.75%20%5Ctimes%2010%5E%7B21%7D%7D%7B6.022%20%5Ctimes%2010%5E%7B23%7D%7D%5C%5C%3D%200.622%20%5Ctimes%2010%5E%7B-2%7D%5C%5C%3D%200.0062%20mol)
As moles is the mass of a substance divided by its molar mass. So, mass of zinc (molar mass = 65.39 g/mol) is calculated as follows.
![Moles = \frac{mass}{molar mass}\\0.0062 mol = \frac{mass}{65.39 g}\\mass = 0.405 g](https://tex.z-dn.net/?f=Moles%20%3D%20%5Cfrac%7Bmass%7D%7Bmolar%20mass%7D%5C%5C0.0062%20mol%20%3D%20%5Cfrac%7Bmass%7D%7B65.39%20g%7D%5C%5Cmass%20%3D%200.405%20g)
Thus, we can conclude that the mass in
atoms of zinc is 0.405 g.