## anonymous one year ago NOBODY IN CHEMISTRY/BIOLOGY PLZ HELP If the shape of an object is irregular, like a stone, how can you measure its volume?

1. anonymous

Water displacement

2. mathmate

Hint: use an overflow can.

3. anonymous

because you measure the volume of water before the object is put into the water

4. anonymous

and after the object is in the water then subtract the 2 volumes

5. anonymous

ok.. can you help with another easy one?

6. anonymous

Does that make sense?

7. anonymous

Sure

8. anonymous

How is the density of a substance calculated?

9. anonymous

Well you need the mass and the volume

10. anonymous

What do you think you do next

11. anonymous

I dont know, divide?

12. anonymous

Yes an easy way to remember density is $\frac{ M }{ V }$ which kind of looks like a heart if you write it out

13. anonymous

lol okay.

14. anonymous

Is that it?

15. anonymous

yep, thanks!!

16. anonymous

Np

17. mathmate

Note: All the above discussions refer to a sinking object. Procedure is different if object floats on the fluid!