Density question. Is my answer correct ?

[maxthe300th]

A glass container has a mass of 12.5 g. An unknown liquid solution with a volume of 10.0 mL is added to the container. The unknown liquid solution plus the container has a mass of 24.5 g . Calculate the density of the unknown solution?.

. 12.5g/10.2g=1.25g is the density of the container plus the liquid.

1.25g*24.5= 30.625g volume total. 24.5g/30.625g= 0.8g density of the liquid

 

[tkhunny]

No good. Your units will save you. "0.8 g" Cannot BE a density. It's a mass.

 

[Deleted member 4993]

A glass container has a mass of 12.5 g. An unknown liquid solution with a volume of 10.0 mL is added to the container. The unknown liquid solution plus the container has a mass of 24.5 g . Calculate the density of the unknown solution?.

. 12.5g/10.2g=1.25g is the density of the container plus the liquid.

1.25g*24.5= 30.625g volume total. 24.5g/30.625g= 0.8g density of the liquid

First make sure You understand the definition of density - and the unit/s of density.

Then calculate the mass of the fluid from the given data.

 

[maxthe300th]

Thanks for the help,

I got this answer

The container plus the liquid has a mass of 24.5g, but the container by itself has a mass of 12.5 g. We can subtract the container’s mass from the overall mass.

24.5g – 12.5g = 12 g, which is the mass of the solution.

D=M/V. M= 12g / V=10.1ml. 12 / 10.0= 1.2 g/ml

 

[JeffM]

Thanks for the help,

I got this answer

The container plus the liquid has a mass of 24.5g, but the container by itself has a mass of 12.5 g. We can subtract the container’s mass from the overall mass.

24.5g – 12.5g = 12 g, which is the mass of the solution.

D=M/V. M= 12g / V=10.1ml. 12 / 10.0= 1.2 g/ml

Looks good. A lot of math is just disciplined common sense.