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dexteright02

Hello!

We know that by the Law of Avogrado, for each mole of substance we have 6.02*10²³ atoms, if:

The molar mass of of magnesium = 24.30 g/mol

If:

1 mol we have 6.02*10²³ atoms

1 mole of Mg we have 24.30 g

Then we have:

24.30 g ------------- 6.02*10²³ atoms

x ----------------------- 7.43*10²² atoms

[tex] \dfrac{24.30}{x} = \dfrac{6.02*10^{23}}{7.43*10^{22}} [/tex]

[tex] 6.02*10^{23}*x = 24.30*7.43*10^{22} [/tex]

[tex] 6.02*10^{23}\:x = 1.80549*10^{24} [/tex]

[tex] x = \dfrac{1.80549*10^{24}}{6.02*10^{23}} [/tex]

[tex] \boxed{\boxed{x \approx 3\:grams\:of\:magnesium}}\end{array}}\qquad\checkmark [/tex]

I Hope this helps, greetings ... DexteR! =)

shristiparmar1221

2.99 grams of magnesium (mg 24.30 g/mol) are in 7.43 x 10²² atoms of mg.

What is Mole concept ?

The mole, symbol mol, is the SI base unit of amount of substance.

The quantity amount of substance is a measure of how many elementary entities of a given substance are in an object or sample.

As we know that 1 mole of magnesium contains 6.023 x 10²³ atoms

And, 1 mole of magnesium has 24.30 g

Therefore,

As, 6.023 x 10²³ atoms of magnesium present in 24.30 gram of magnesium

So,

7.43 x 10²² atoms of magnesium present in  ;

(7.43 x 10²² / 6.023 x 10²³ ) x 24.30 gram of magnesium

          = 2.99 grams of magnesium

Therefore, the mass of magnesium is, 2.99 grams.

Learn more about Mole concept here ;

https://brainly.com/question/22540912

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