Question

A chemist prepares a solution of sodium nitrate (NaNO,) by measuring out 542 mol of sodium nitrate into a 100 ml. volumetric flask and filling the flask to the mark with water. Calculate the concentration in mmol/L of the chemist's sodium nitrate solution. Round your answer to 3 significant digits.

Answer 1

Answer) moles of NaNO₃ (n) = 54.2 umol = 54.2x10-3 mmol volume of solution (N) - 100 ml = 0.16 Molarity = n 54.2x10-3(mmol) 0.1 (W = 0.542 mmoy