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The fourth option

Explanation:

So if you got the periodic table, you can search for boron and get it's Molar Mass: B=10.811u

We know the given mass and we know that there's only 1 mol of boron given, we can calculate it by the given:

We use avogadro's number (6.022×10²²), plug in our new value to get the # atoms: (Multiply 8.14 by Avogadro's number to get the atom number)

so the atom number for 88g of Boron would be : 4.90×10²² atoms of B

solute : a solute is a substance that is dissolved in another substance is known as a solvent. it is mixed with a special mixture know as homogeneous mixture.

solvent: a solvent is a substance that dissolved a solute, which results in a solution is known as solvent.