First, we have to find the no. Of moles. For this purpose, we will use avagadro's number
1 mole = 6.023*10^23 molecules
Therefore, the number of moles are
(1 *10^23)/(6.023*10^23) = 0.166 moles
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Formula mass of MgSiF6 :::: = 24 + 28 + 6*19
= 166g
ANSWER: 0.166 moles * 166g/mol
= 26.56g
1 mole = 6.023*10^23 molecules
Therefore, the number of moles are
(1 *10^23)/(6.023*10^23) = 0.166 moles
======
Formula mass of MgSiF6 :::: = 24 + 28 + 6*19
= 166g
ANSWER: 0.166 moles * 166g/mol
= 26.56g