Answer:
19. g/mL
Explanation:
- First you find the difference between the previous and current water level:
77.0-50.0=27 mL
- Then you use the formula, density=mass over volume:
d=521g over 27mL or d=521g/27mL
- Finally, you divide and round to according to it's significant number
=19.2962963 g/mL
turns into 19. g/mL
hoped this helped! (and that its right-_-)