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Question The mole is defined as the number of atoms in exactly 12gof carbon-12. The mole equals6.022×1023items of whatever you are counting. This number is also calledAvogadro’s number, after Amadeo Avogadro (1776–1856). Molar mass is the mass of 1 mol of atoms of an element; for compounds, molar mass is the mass of 1 mol of molecules or formula units. Molar mass can be used to convert mass to moles for any element or compound. How many formula units make up 13.6 g of magnesium chloride (MgCl2)? Express the number of formula units numerically.

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Question

The mole is defined as the number of atoms in exactly 12gof carbon-12. The mole equals6.022×1023items of whatever

you are counting. This number is also calledAvogadro’s number, after Amadeo Avogadro (1776–1856).

Molar mass is the mass of 1 mol of atoms of an element; for compounds, molar mass is the mass of 1 mol of molecules or formula units. Molar mass can be used to convert mass to moles for any element or compound.     

How many formula units make up 13.6 g of magnesium chloride (MgCl2)?
Express the number of formula units numerically.

 
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