40m3 of liquid is mixed with 60m3 of another liquid Q. If the density of P and Q are 1.00kgm-3 and 1.6kgm-3 respectively, what is the density of the mixture?
a
0.05kgm-3
b
1.25kgm-3
c
1.30kgm-3
d
1.36kgm-3
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Anela
1 year ago
Density= Mass/vol.
Let's call it D1 and D2,V1 and V2
MASS OF 1
D1=1
V1=40
Mass of 1= Density × vol
=40×1
= 40
D2=1.6
V2=60
Mass of 2=mass x vol
=60×1.6
=96.
TOTAL MASS=96+40
=136
TOTAL VOLUME=60+40=100
NOW WE HAVE THE TOTAL MASS & VOLUME. Let's find the total density
Mass= vol x density
136=100 x d
d=136/100
= 1.36




