Jesse E. answered 08/31/19
Masters in Chemistry specializing in preparing for ACT Science.
If I am understanding the question correctly, the new volume would have increased 50 mL. (Steven, please correct me if I am not getting this correctly but I will be proceeding forward with with assumption.) The density of an object is mass divided by volume. In this case, it will be:
29.7 grams/50 mL = 0.59 g/mL