Answer:
Step-by-step explanation:
OMG IVE LEARNY THIS YESTERDAYYY!!!
Ok, so what you need to do first is to always remember the formula for finding the density which is
Density= mass÷ volume.
The question states the mass of the rock is 16g
And to find the volume of the rock is: final volume subtracting the initial volume
= 75ml - 50ml
=20 ml cubed
Hence:
Density=16g÷25ml
Oh I forgot in the picture, it's written that ml cubed is the same as centimetres cubed.
Back on to what I was saying before
Density = 16g÷25cm cubed
=0.64g/cm^3,if you want to convert the g to kg and cm to m because the SI unit of mass is kg and volume is metres
To convert 0.64g/cm^3 you × 1000 which is
=640kg/m^3
Adiosss