Can i have someone do this its my birthday and im giving a brainlist

Answer:
1.) density can be defined as the mass of the substance in unit volume
density=mass/volume
2.)2.70g/mL
mass of the block =146
length× width×height=54cm=54mL
density=mass/volume =146 g/54 mL =2.70 g/mL
3.) 3.39 g/mL
4.)Accepted value is the value that scientists and community accept as true. This is a theoretical value.
5.)Percent error is 9.11 % The element which has 7.13 g/cm³ as density is Zinc (Zn).
Explanation:
I helped my brother with it and he got it right let me know if it was right for you too:)
thank me if it was