How many grams of sodium chloride are there in 2.34 moles of sodium chloride (NaCl)?
To find the mass that we have in 2.34 moles of NaCl, we need the molar mass of NaCl. To get the molar mass of NaCl we have to look for the atomic mass of Na and Cl in the periodic table:
Na: 22.99 amu Cl: 35.45 amu
Using those values we can calculate the molar mass of NaCl:
molar mass of NaCl = 22.99 + 35.45
molar mass of NaCl = 58.44 g/mol
Now that we know the mass of 1 mol of NaCl, we can find the mass of NaCl that there are in 2.34 moles of it.
mass of NaCl = number of moles of NaCl * molar mass of NaCl
mass of NaCl = 2.34 moles * 58.44 g/mol
mass of NaCl = 136.75 g
Answer: There are 137 g of NaCl in 2.34 moles of it.