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

The density of aluminum is 2.70g/cm3. If a cube of aluminum weighs 13.5 grams whatis the length of the edge of the cube. I need help with the formula to figure this one out.

- Chemistry -
**DrBob222**, Wednesday, June 1, 2011 at 5:49pm
mass = 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 6:22pm
Hello 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 6:34pm
Close 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 10:37pm
Thank you DR Bob

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

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

## Answer This Question

## Related Questions

- Chemistry - What is the mass of a cube of aluminum that is 4.0 cm on each edge...
- physics - A cube of aluminum is 4cm on each side.find the mass of the cube. (...
- chemistry - Perform this operation and report the answer to the correct number ...
- Science - A piece of aluminum has a mass of 39.15g and a volume of 14.5cm cube. ...
- Chemistry - Aluminum has a density of 2.99 grams per cubic cm. and a specific ...
- Chemistry - Aluminum has a density of 2.99 grams per cubic cm. and a specific ...
- chemistry - The density of aluminum is 2.70g/cm3 and the density of chromium is ...
- Physical Science - A 2.9-kg pile of aluminum ( = 2.70 g/cm3) cans is melted, and...
- Science - 2. Perform this operation and report the answer to the correct number ...
- Chemistry - You measure one edge of a cube using a meter stick marked in ...

More Related Questions