Calculate the mass of NaCl present in 251 g of a 12.8 % NaCl solution

251 * 0.128 = _____

Use the balanced chemical equation below to calculate the mass of water, in grams, that can be produced

from 109 mL of 2.51 M NaOH(aq). You may assume more than enough H2SO4(aq) is present.

H2SO4(aq) + 2 NaOH(aq) → 2 H2O(l) + Na2SO4(aq