Chemistry limiting reagent problems help?

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lptrapt

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14.4 g of Li is heated with 34.7 g of N2. Convert these masses to moles and identify the limiting reagent.

I know that Li is the limiting reagent. But i'm not quite sure how to convert the grams to moles.
 
number of moles =the mass of the element/ its MR(molar ratio, should be able to find on the perodic table). the one with the lesser number of moles is the limiting reagent.

Hopes that answer ur question :)
 
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