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September 29, 2016
Posted by **Jessica ** on Wednesday, June 1, 2011 at 5:36pm.

- Chemistry -
**DrBob222**, Wednesday, June 1, 2011 at 5:49pmmass = volume x density

Solve for volume.

Then, since this is a cube, the length, width, and height are equal. So

volume = L x W x H but since L = W = H, then

volume = L x L x L. Solve for L. - Chemistry -
**Jessica**, Wednesday, June 1, 2011 at 6:22pmHello Dr Bob,, I am still a little confused is this what it will look like 13.5/2.70=5 then take 5*5*5=125

- Chemistry -
**DrBob222**, Wednesday, June 1, 2011 at 6:34pmClose but no cigar.

Volume = mass/density = 13.5/2.7 = 5.0 cc whis is ok to this point. Now,

volume = L x L x L

5 = L x L x L

5 = L^{3}; therefore,

L = cube root 5 OR

L = 5^{1/3}

(On your calculator, enter 5, then punch the y^x button, and type in .33333 (which is 1/3) and = to find the answer of 1.70997 which rounds to 1.71 cm to three significant figures. - Chemistry -
**Jessica**, Wednesday, June 1, 2011 at 10:37pmThank you DR Bob

- Chemistry -
**Anonymous**, Thursday, October 1, 2015 at 11:18am81 g

- Chemistry -
**Anonymous**, Monday, January 25, 2016 at 11:00pmAluminum has a density of 2.7 g/mL. What is the volume of an aluminum Cube that has a mass of 12.7 grams

- Chemistry -
**Frank Mandhlokuwa**, Wednesday, March 16, 2016 at 6:18ammass = volume x density

since this is a cube the length,width and height are

equal so volume =L ×W×H but since L=W=H

volume = mass/density

= 12,7÷2,7

= 4,703703704

4,703703704 = L^3

L = 1,675508565cm