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Which Quantity Is Equivalent To 39 Grams Of LiF?

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Katie Harry Profile
Katie Harry answered
The molecular weight of LiF is 26:
  Atomic mass of Li + Atomic mass of F
= 7 + 19
= 26

We can also say that one mole of LiF is equal to 26 grams.
Now, if 26 grams equal 1 mole, how many moles do 39 grams contain? Let's see:
z = (39x1)/26
z = 1.5 moles

So, your answer would be that 1.5 moles of LiF would be equivalent to 39 grams.

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