A. What is the mass of Solution 3? in g

Question

B. What is the density of Solution 2? g/ml

solution 1:
Mass Empty Flask (g):42.252
Mass NaCl (g):0.911
Volume Water (mL):100
Mass of Flask + Solution (g):43.107

solution 2:
MEF: 45.778
mass nacl:0.897
volume water: 100
mass of Flask+sol:47.506

solution 3:
Mass empty flask:40.036
mass nacl:0.922
volume water: 200
mass of flask and sol: 40.663

Answer 1

Mass of empty flask = ??
Mass of flask and sol = ??
Subtract to obtain mass sol.

density = mass/volume