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Answer:

Explanation:

Number of moles of Cl atoms in 1.20 1024 Formula units of magnesium chloride mgcl2

The number of moles of Cl is twice as much, because the ratio of Cl in MgCl2 to MgCl2 is 2:1. Therefore, there are 12 moles of Cl. There are 7.22×1024 atoms Cl in 3.61×1024 formula units of MgCl2

The number of grams in 4.26 × 10²⁴ formula units of MgCl₂ is equal to 673.06 grams.

What is the relation between moles and mass?

Mass of any substance from moles will be calculated by using the below equation as:

n = W/M, where

W = given mass

M = molar mass

And relation between moles and atoms per moles is:

In 1 moles = 6.022 × 10²³ atoms are present

Given number of atoms of MgCl₂ = 4.26 × 10²⁴

Moles of MgCl₂ = 4.26 × 10²⁴atoms / 6.022 × 10²³ atoms/mol = 7.07 mol

Non we convert this moles of MgCl₂ into grams by using the above given formula as:

W = (7.07mol)(95.2g/mol) = 673.06 g

Hence required mass of MgCl₂ is 673.06g.

To know more about moles & mass, visit the below link:
https://brainly.com/question/15373263

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