What's the Density of Mixed Liquids?

[O.J.]

exam question...

Equal masses of two liquids of density P and 2P are mixed together thoroughly. Whats the density of the mixture provided the total volume remains constant?

1.4p/3 2. 3p/2 3. 3p 4.5p/3

im getting 4p/3... is that correct?

 

[Astronuc]

Correct -

One has m/$\rho$ = V, so m/$2\rho$ = V/2, based on equal masses, so

total mass = 2m, and total volume = V + V/2 = 3/2 V.

 

[O.J.]

thanx a lot... exams is tomorrow.. pray for me guys! :D:D