Just add the two masses: 40 + 120 = 160 grams.
The number of moles of NaOH in the solution will be equal to the molarity (M, the concentration) times the volume in Liters. For this problem, the volume is .120 Liters.
120
Molar mass NaOH: Na = 23 O = 16 H = 1+ ------ 40g/Mol 120/40 = 3
2.94
120 ml of water weighs 120 grams
120 grams = 4.23287543 ounces
The answer to the question is 120 grams of water :)
120 grams = 0.120 kg
120 grams = 0.264554715 pounds
i think it equals .120 grams
120 grams = 4.23 ounces