Question

how many atom of aluminium are present in 162 u of Al?​

Answer 1

Here is your answer

Hope it's help you

Answer 2

There are $3.613\times10^{24}$ atoms of aluminium present in 162 u of Al.

Given:

Weight of Al = 162 u

To find:

Number of atoms present in 162 u of Al = ?

Formula to be used:

• Number of moles = $\frac{Given mass}{Atomic mass}$
• Number of molecules = No. of moles × Avogadro's number

Calculation:

Calculation of number of moles:

Number of moles = $\frac{Given mass}{Atomic mass}$

Number of moles = $\frac{162}{27} = 6$

Number of moles = 6

Calculation of number of molecules:

Number of molecules = No. of moles × Avogadro's number

Number of molecules = 6 × $6.022\times10^{23}$

Number of molecules = $36.132\times10^{23}$

Number of molecules = $3.6132\times10^{24}$

Conclusion:

162 u of Al is composed of $3.6132\times10^{24}$ atoms of aluminium.

Learn more about such concept

Question 7.25 Does the number of moles of reaction products increase, decrease or remain same when each of the following equilibria is subjected to a decrease in pressure by increasing the volume?

brainly.in/question/2161336

How to calculate the number of moles for the following : i)52g of He (finding mole from masses ) ii)12.044 x 10 to the power 23 number of helium atoms (finding mole from number of particles ) .

brainly.in/question/2840160