How many grams are in 2.3 moles of phosphorus? Chemistry The Mole Concept The Mole 1 Answer Artwell · Stefan V. Feb 21, 2018 Great solvable question. Simply use the formula: #n=m/M# Always use a periodic table as a reference when dealing with moles and mass numbers of the elements or compounds. Explanation: Phosphorus has a molar mass #(M)# of #"30.973762 g/mol"#. Therefore #m=n xx M= "2.3 moles" xx "30.973762 g/mol" = "71 g"# Answer link Related questions How do you calculate the number of moles from volume? How do you convert grams to mole? Question #258e5 Question #8d48c Why is the mole an important unit to chemists? What's the mole number? How does the mole relate to carbon 12? How does the mole relate to molecules and ions? How do you calculate the moles of a substance? How can I calculate the moles of a solute? See all questions in The Mole Impact of this question 10815 views around the world You can reuse this answer Creative Commons License