How many moles organic?

Grignard Reagent (RMgX) Where R is an alkyl or phenyl group and X is an halogen(normally chlorine and bromine) is a widely used reagent in organic chemistry. As magnesium is an electropositive element carrying a positve 2 charge hence R Group must also carry a unit negative charge that means that in RMgX Carbon has carbanion character (which is a very strong base) . Basicity decreases along a period as electronegativity increases so tendency to loose electrons decreases. Hence it can abstract slightly acidic hydrogen also (like from terminal alkynes) . Hence it can take H+ from Nitrogen,alkyne,Thioalcohol and carboxylic acid and will form methane. (A similar reaction is corey house synthesis also albeit it uses organo lithium compounds)

There are 4 acidic hydrogen in the compound in the groups : $COOH, SH, CONH_2, CH\equiv C$ .

Thus, 4 moles of $CH_{3} ^{-}$ take these $H^{+}$ and form 4 moles of $CH_4$