Answer:
The answer is
11.25 g/mL
Step-by-step explanation:
The density of a substance can be found by using the formula
![Density = (mass)/(volume)](https://img.qammunity.org/2021/formulas/chemistry/high-school/el4r75hf1brsg5k4a45db8ptpkl6z9kys6.png)
From the question
mass = 45 g
volume = 4 mL
Substitute the values into the above formula and solve for the density
We have
![Density = (45)/(4)](https://img.qammunity.org/2021/formulas/chemistry/high-school/b44la1231vwqwekq0jdfzd13fg7wuu4uu9.png)
We have the final answer as
11.25 g/mL
Hope this helps you