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How many particles are in 1.5 mol of ammonia, NH3?
9x10^23 particles of NH3 are in 1.5 mol of ammonia. Because keep in mind that mole is just a unit of quantity, (ex) like a dozen. 1 mol = 6.022x10^23 atoms or molecules (like NH3) or dogs or cats. Like a dozen cats for example. So 1.5 mol = (X) NH3. So our equation is 1mol/1.5mol = (6.022x10^23) / (X) NH3 and solve for (X) algebraically.