the density of porcelain is 2.40g/mL. if the volume is 325 mL what is the mass of the piece in oz?
could i just put 2.40g/mL = x/325mL

Question

the density of porcelain is 2.40g/mL.  if the volume is 325 mL what is the mass of the piece in oz? 
could i just put 2.40g/mL = x/325mL

mayankdevnani · Answer

use this formula :-
$$\large \bf density=\frac{mass}{volume}$$

mayankdevnani · Answer

plug the values in this formula and get your annswer

anonymous · Answer

$$2.40 = \frac{ x }{ 325 }$$
and i get 780

mayankdevnani · Answer

@ninab731  you are correct :)

anonymous · Answer

ok i just get confused when i convert first then solve!

anonymous · Answer

or should i say - knowing when to convert first!

mayankdevnani · Answer

any confusion here ? @ninab731 
I don't understand what are you trying to say ?

anonymous · Answer

no i understand i just get confused know when i have to convert things first since it had asked for oz but was in g/ml so thought i may had to convert first

mayankdevnani · Answer

Remember :- If all the quantities are in same units already,then don't convert into another unit.

Example :- In your question,density is in g/ml and volume is already given in ml,so mass should be in g because of all matching units.

mayankdevnani · Answer

understood?

anonymous · Answer

oh ok :)

mayankdevnani · Answer

great

anonymous · Answer

thanks !!

mayankdevnani · Answer

welcome :)